CVE-2025-32433

CRITICALNVD 10.010.0
EchelonGraph scoreHIGH confidence

“—” beside the score: it is equal to NVD's CVSS score.

Score elevated to 10.0 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2025-06-09), indicating real-world exploitation has been confirmed by US federal agencies. NVD baseline CVSS 10.0 retained for reference. Confidence: HIGH.

Triggered by: CISA KEV (actively exploited)
Sources: CISA Known Exploited Vulnerabilities catalog, EPSS, NVD CVSS v3
Trending — 3 sources updated this weekExploited in the wild

Also known asEUVD-2025-11793 (ENISA EUVD)Source: ENISA EUVD

10.0EG
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV) — the reason this is sooner than the SSVC decision on this page at low mission impact
CISA-KEV: ExploitedEPSS PROB: 99%CVSS: 10.0Exploit: Metasploit · other public PoCExposed services: Not assessed

A fix is available — apply it.

Erlang/OTP is a set of libraries for the Erlang programming language. Prior to versions OTP-27.3.3, OTP-26.2.5.11, and OTP-25.3.2.20, a SSH server may allow an attacker to perform unauthenticated remote code execution (RCE). By exploiting a flaw in SSH protocol message handling, a malicious actor could gain unauthorized access to affected systems and execute arbitrary commands without valid credentials. This issue is patched in versions OTP-27.3.3, OTP-26.2.5.11, and OTP-25.3.2.20. A temporary workaround involves disabling the SSH server or to prevent access via firewall rules.

CVSS v3
10.0
EG Score
10.0CRITICALhigh confidence
EG Risk
100
EG Risk 100/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity100% × 45%
Impact severity (EG Severity): CVSS 10.0 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation100% × 40%
Fixed at 100% for a CISA KEV listing: EchelonGraph's rule.
Automatability100% × 15%
CISA's SSVC Automatable value: yes (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Attend at low mission impact; Act at medium or high.
Exploitation active (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is available. Apply it sooner than your standard update timelines at low mission impact and as soon as possible at medium or high.
EPSS PROB
99%
EPSS %ILE
99th
KEV
⚠ Exploited

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (10.0): severity, escalated by confirmed exploitation. This CVE's 10.0 is its impact severity (EG Severity), not escalated.

EG Severity
10.0 CRITICALCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.NVD CVSS v3 · CVSS v3.0 or v3.1
EG Likelihood
99% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-31). FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
CISA KEV and EG-KEV Tier 1 (exploited in the wild)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Act at medium mission impactAttend at low mission impact; Act at medium or high.CISA BOD 26-04: 3 days & forensic triage if the affected system is publicly exposed; 3 days & forensic triage if it is not.Each input and its source, and whom BOD 26-04 binds: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Attend at low mission impact; Act at medium or high.

A fix is available. Apply it sooner than your standard update timelines at low mission impact and as soon as possible at medium or high.

Exploitation active (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)3 days & forensic triage if the affected system is publicly exposed; 3 days & forensic triage if it is not.

The score's inputs: In CISA KEV yes (CISA's KEV catalog) · Automatable yes (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

CISA required action“Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.”

Quoted verbatim from CISA's Known Exploited Vulnerabilities catalog. CISA directs it at US federal civilian executive branch agencies under Binding Operational Directive (BOD) 26-04, which replaced BOD 22-01 on 10 June 2026; it is not EchelonGraph's advice. CISA's notes: https://github.com/erlang/otp/security/advisories/GHSA-37cp-fgq5-7wc2 · https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-erlang-otp-ssh-xyZZy · https://nvd.nist.gov/vuln/detail/CVE-2025-32433

Published

April 16, 2025

Last Modified

November 4, 2025

Advisory Details (10)

Auto-updated Nov 1, 2026
⚠️ Actively exploited (CISA KEV, CISA Vulnrichment). Patch available. Sources: github, github_commit.
Web pageMentions a patch (unverified)

[SECURITY] [DLA 4132-1] erlang security update

https://lists.debian.org/debian-lts-announce/2025/04/msg00028.html
Web page

oss-security - Re: CVE-2025-32433: Unauthenticated Remote Code Execution in Erlang/OTP SSH

http://www.openwall.com/lists/oss-security/2025/04/19/1
Web page

oss-security - Re: CVE-2025-32433: Unauthenticated Remote Code Execution in Erlang/OTP SSH

http://www.openwall.com/lists/oss-security/2025/04/18/6
Web page

oss-security - Re: CVE-2025-32433: Unauthenticated Remote Code Execution in Erlang/OTP SSH

http://www.openwall.com/lists/oss-security/2025/04/18/2
Web page

oss-security - Re: CVE-2025-32433: Unauthenticated Remote Code Execution in Erlang/OTP SSH

http://www.openwall.com/lists/oss-security/2025/04/18/1
Web page

oss-security - CVE-2025-32433: Unauthenticated Remote Code Execution in Erlang/OTP SSH

http://www.openwall.com/lists/oss-security/2025/04/16/2
GitHub advisoryMentions a patch (unverified)

Unauthenticated Remote Code Execution in Erlang/OTP SSH · Advisory · erlang/otp · GitHub

https://github.com/erlang/otp/security/advisories/GHSA-37cp-fgq5-7wc2
GitHub commit

commit b1924d37fd83 (erlang/otp)

Fix landed in erlang/otp commit b1924d37fd83 — awaiting tagged release

https://github.com/erlang/otp/commit/b1924d37fd83c070055beb115d5d6a6a9490b891
GitHub commit

commit 6eef04130afc (erlang/otp)

Fix landed in erlang/otp commit 6eef04130afc — awaiting tagged release

https://github.com/erlang/otp/commit/6eef04130afc8b0ccb63c9a0d8650209cf54892f
GitHub commit

commit 0fcd9c56524b (erlang/otp)

Fix landed in erlang/otp commit 0fcd9c56524b — awaiting tagged release

https://github.com/erlang/otp/commit/0fcd9c56524b28615e8ece65fc0c3f66ef6e4c12

Vendor Advisories for CVE-2025-32433(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(3)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
ubuntuerlang-xmerl (1:27.3+dfsg-1ubuntu1.1) @ plucky2026-11-01ubuntu
ubuntuerlang-xmerl (1:18.3-dfsg-1ubuntu3.1+esm1) @ xenial2026-11-01ubuntu
ubuntuerlang-xmerl (1:25.3.2.12+dfsg-1ubuntu2.3) @ oracular2026-11-01ubuntu

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
erlang1:23.2.6+dfsg-1, 1:23.2.6+dfsg-1+deb11u1
  • every version up to 1:23.2.6+dfsg-1+deb11u2: fixed in 1:23.2.6+dfsg-1+deb11u2
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
erlang1:25.2.3+dfsg-1
  • every version up to 1:25.2.3+dfsg-1+deb12u1: fixed in 1:25.2.3+dfsg-1+deb12u1
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
erlang—
  • every version up to 1:27.3.3+dfsg-1: fixed in 1:27.3.3+dfsg-1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
erlang—
  • every version up to 1:27.3.3+dfsg-1: fixed in 1:27.3.3+dfsg-1
—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Additional Vendor Advisories

(3)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 12× in last 7d / 101× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 100 of 976 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. None are among the latest 100 rows. The 876 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-01 16:21 UTCEG score recompute
  2. 2026-11-01 16:21 UTCVendor advisory
  3. 2026-10-31 14:39 UTCEG score recompute
  4. 2026-10-31 14:39 UTCVendor advisory
  5. 2026-10-30 12:59 UTCEG score recompute
  6. 2026-10-30 12:59 UTCVendor advisory
  7. 2026-10-29 11:18 UTCEG score recompute
  8. 2026-10-29 11:18 UTCVendor advisory
  9. 2026-10-28 09:38 UTCEG score recompute
  10. 2026-10-27 16:30 UTCEPSS rescoreEPSS 99% · 99th percentile
  11. 2026-10-27 07:57 UTCEG score recompute
  12. 2026-10-27 07:57 UTCVendor advisory
  13. 2026-10-26 06:17 UTCVendor advisory
  14. 2026-10-25 16:34 UTCEG score recompute
  15. 2026-10-25 16:31 UTCEPSS rescoreEPSS 99% · 99th percentile
  16. 2026-10-25 04:37 UTCEG score recompute
  17. 2026-10-25 04:37 UTCVendor advisory
  18. 2026-10-24 02:58 UTCEG score recompute
  19. 2026-10-24 02:58 UTCVendor advisory
  20. 2026-10-23 01:18 UTCEG score recompute
  21. 2026-10-23 01:18 UTCVendor advisory
  22. 2026-10-21 23:37 UTCEG score recompute
  23. 2026-10-21 23:37 UTCVendor advisory
  24. 2026-10-20 21:57 UTCEG score recompute
  25. 2026-10-20 21:57 UTCVendor advisory
Show 75 more
  1. 2026-10-19 20:17 UTCEG score recompute
  2. 2026-10-19 20:17 UTCVendor advisory
  3. 2026-10-19 16:30 UTCEPSS rescoreEPSS 99% · 99th percentile
  4. 2026-10-18 18:36 UTCEG score recompute
  5. 2026-10-18 18:36 UTCVendor advisory
  6. 2026-10-18 16:30 UTCEPSS rescoreEPSS 99% · 99th percentile
  7. 2026-10-18 05:38 UTCEG score recompute
  8. 2026-10-17 16:55 UTCEG score recompute
  9. 2026-10-17 16:55 UTCVendor advisory
  10. 2026-10-17 16:32 UTCEPSS rescoreEPSS 99% · 99th percentile
  11. 2026-10-16 15:15 UTCEG score recompute
  12. 2026-10-15 13:35 UTCEG score recompute
  13. 2026-10-14 11:53 UTCEG score recompute
  14. 2026-10-13 10:13 UTCVendor advisory
  15. 2026-10-12 17:10 UTCEG score recompute
  16. 2026-10-12 08:32 UTCVendor advisory
  17. 2026-10-12 04:35 UTCVendor advisory
  18. 2026-10-12 00:39 UTCVendor advisory
  19. 2026-10-11 20:43 UTCVendor advisory
  20. 2026-10-11 20:43 UTCEG score recompute
  21. 2026-10-11 16:45 UTCEG score recompute
  22. 2026-10-11 16:45 UTCVendor advisory
  23. 2026-10-11 15:31 UTCEG score recompute
  24. 2026-10-11 12:49 UTCEG score recompute
  25. 2026-10-11 12:49 UTCVendor advisory
  26. 2026-10-11 08:52 UTCVendor advisory
  27. 2026-10-11 04:56 UTCVendor advisory
  28. 2026-10-11 01:00 UTCVendor advisory
  29. 2026-10-10 21:04 UTCVendor advisory
  30. 2026-10-10 17:05 UTCVendor advisory
  31. 2026-10-10 13:09 UTCVendor advisory
  32. 2026-10-10 09:13 UTCVendor advisory
  33. 2026-10-10 05:16 UTCVendor advisory
  34. 2026-10-10 01:20 UTCVendor advisory
  35. 2026-10-09 21:24 UTCVendor advisory
  36. 2026-10-09 17:28 UTCVendor advisory
  37. 2026-10-09 13:32 UTCVendor advisory
  38. 2026-10-09 09:36 UTCVendor advisory
  39. 2026-10-09 05:40 UTCVendor advisory
  40. 2026-10-09 01:43 UTCVendor advisory
  41. 2026-10-08 21:47 UTCVendor advisory
  42. 2026-10-08 17:51 UTCVendor advisory
  43. 2026-10-08 13:55 UTCVendor advisory
  44. 2026-10-08 09:57 UTCVendor advisory
  45. 2026-10-08 06:00 UTCVendor advisory
  46. 2026-10-08 02:05 UTCVendor advisory
  47. 2026-10-07 22:09 UTCVendor advisory
  48. 2026-10-07 18:12 UTCVendor advisory
  49. 2026-10-07 14:15 UTCVendor advisory
  50. 2026-10-07 10:19 UTCVendor advisory
  51. 2026-10-07 06:23 UTCVendor advisory
  52. 2026-10-07 02:25 UTCVendor advisory
  53. 2026-10-06 22:29 UTCVendor advisory
  54. 2026-10-06 18:33 UTCVendor advisory
  55. 2026-10-06 14:37 UTCVendor advisory
  56. 2026-10-06 10:41 UTCVendor advisory
  57. 2026-10-06 06:43 UTCVendor advisory
  58. 2026-10-06 02:46 UTCVendor advisory
  59. 2026-10-05 22:50 UTCVendor advisory
  60. 2026-10-05 18:53 UTCEG score recompute
  61. 2026-10-05 18:53 UTCVendor advisory
  62. 2026-10-05 17:42 UTCEPSS rescoreEPSS 99% · 99th percentile
  63. 2026-10-05 14:57 UTCVendor advisory
  64. 2026-10-05 11:01 UTCVendor advisory
  65. 2026-10-05 07:05 UTCVendor advisory
  66. 2026-10-05 03:09 UTCVendor advisory
  67. 2026-10-04 23:13 UTCVendor advisory
  68. 2026-10-04 19:17 UTCVendor advisory
  69. 2026-10-04 15:20 UTCVendor advisory
  70. 2026-10-04 11:23 UTCVendor advisory
  71. 2026-10-04 07:28 UTCVendor advisory
  72. 2026-10-04 03:31 UTCVendor advisory
  73. 2026-10-03 23:36 UTCVendor advisory
  74. 2026-10-03 19:39 UTCVendor advisory
  75. 2026-10-03 15:44 UTCVendor advisory

Publicly available exploits

(11 references, 10 shown)

Public exploit code is referenced for this CVE (1 Metasploit module, 10 GitHub PoCs). Defenders should treat patch urgency accordingly.

  • Metasploitexploit/linux/ssh/ssh_erlangotp_rce✓ verified
    Published May 2, 2025

    Erlang OTP Pre-Auth RCE Scanner and Exploit

    Open source ↗
  • GitHub PoCNiteeshPujari/CVE-2025-32433-PoC
    Published Aug 13, 2025

    CVE-2025-32433 PoC: Unauthenticated Remote Code Execution (RCE) in Erlang/OTP SSH. A proof-of-concept exploit for CVE-2025-32433

    Open source ↗
  • GitHub PoC0x7556/CVE-2025-32433
    Published Apr 25, 2025

    CVE-2025-32433 Erlang/OTP SSH RCE Exploit SSH远程代码执行漏洞EXP

    Open source ↗
  • GitHub PoC0xPThree/cve-2025-32433
    Published Apr 19, 2025
    Open source ↗
  • GitHub PoCdarses/CVE-2025-32433
    Published Apr 18, 2025

    Security research on Erlang/OTP SSH CVE-2025-32433.

    Open source ↗
  • GitHub PoCekomsSavior/POC_CVE-2025-32433
    Published Apr 18, 2025
    Open source ↗
  • GitHub PoCexa-offsec/ssh_erlangotp_rce
    Published Apr 18, 2025

    Exploitation module for CVE-2025-32433 (Erlang/OTP)

    Open source ↗
  • GitHub PoCLemieOne/CVE-2025-32433
    Published Apr 18, 2025

    Missing Authentication for Critical Function (CWE-306)-Exploit

    Open source ↗
  • GitHub PoCm0usem0use/erl_mouse
    Published Apr 18, 2025

    python script to find vulnerable targets of CVE-2025-32433

    Open source ↗
  • GitHub PoComer-efe-curkus/CVE-2025-32433-Erlang-OTP-SSH-RCE-PoC
    Published Apr 18, 2025

    The vulnerability allows an attacker with network access to an Erlang/OTP SSH server to execute arbitrary code without prior authentication.

    Open source ↗

Frequently asked(6)

What is CVE-2025-32433?
CVE-2025-32433 is a critical-severity vulnerability; its CVE record was published on April 16, 2025. Erlang/OTP is a set of libraries for the Erlang programming language. Prior to versions OTP-27.3.3, OTP-26.2.5.11, and OTP-25.3.2.20, a SSH server may allow an attacker to perform unauthenticated remote code execution (RCE). By exploiting a flaw in SSH protocol message handling, a malicious actor…
When was the CVE record for CVE-2025-32433 published?
The CVE record for CVE-2025-32433 was published on April 16, 2025. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of November 4, 2025; the record at its source may have been updated since.
Is CVE-2025-32433 actively exploited?
Yes. CISA added CVE-2025-32433 to the Known Exploited Vulnerabilities catalog on June 9, 2025, affecting Erlang Erlang/OTP. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate attention. A fix is available. Apply it.
What is the CVSS score of CVE-2025-32433?
CVE-2025-32433 has a CVSS v3 base score of 10.0 (NVD).
Which products are affected by CVE-2025-32433?
CVE-2025-32433 affects Erlang Erlang/OTP. The affected packages EchelonGraph has on record, with version ranges, are listed in the Affected Packages section of this page.
How do I remediate CVE-2025-32433?
A fix for CVE-2025-32433 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2025-32433 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2025-32433

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