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.
CVE-2025-32433
“—” 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.
Also known asEUVD-2025-11793 (ENISA EUVD)Source: ENISA EUVD
- Actively exploited in the wild (CISA-KEV) — the reason this is sooner than the SSVC decision on this page at low mission impact
A fix is available — apply it.
- CVSS v3
- 10.0
- EG Score
- 10.0CRITICALhigh confidence
- EG Risk
- 100EG 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[SECURITY] [DLA 4132-1] erlang security update
https://lists.debian.org/debian-lts-announce/2025/04/msg00028.htmloss-security - Re: CVE-2025-32433: Unauthenticated Remote Code Execution in Erlang/OTP SSH
http://www.openwall.com/lists/oss-security/2025/04/19/1oss-security - Re: CVE-2025-32433: Unauthenticated Remote Code Execution in Erlang/OTP SSH
http://www.openwall.com/lists/oss-security/2025/04/18/6oss-security - Re: CVE-2025-32433: Unauthenticated Remote Code Execution in Erlang/OTP SSH
http://www.openwall.com/lists/oss-security/2025/04/18/2oss-security - Re: CVE-2025-32433: Unauthenticated Remote Code Execution in Erlang/OTP SSH
http://www.openwall.com/lists/oss-security/2025/04/18/1oss-security - CVE-2025-32433: Unauthenticated Remote Code Execution in Erlang/OTP SSH
http://www.openwall.com/lists/oss-security/2025/04/16/2Unauthenticated Remote Code Execution in Erlang/OTP SSH · Advisory · erlang/otp · GitHub
https://github.com/erlang/otp/security/advisories/GHSA-37cp-fgq5-7wc2commit b1924d37fd83 (erlang/otp)
Fix landed in erlang/otp commit b1924d37fd83 — awaiting tagged release
https://github.com/erlang/otp/commit/b1924d37fd83c070055beb115d5d6a6a9490b891commit 6eef04130afc (erlang/otp)
Fix landed in erlang/otp commit 6eef04130afc — awaiting tagged release
https://github.com/erlang/otp/commit/6eef04130afc8b0ccb63c9a0d8650209cf54892fcommit 0fcd9c56524b (erlang/otp)
Fix landed in erlang/otp commit 0fcd9c56524b — awaiting tagged release
https://github.com/erlang/otp/commit/0fcd9c56524b28615e8ece65fc0c3f66ef6e4c12Vendor 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 / Ecosystem | Fix (by version range) / Patch | Released | Source |
|---|---|---|---|
| ubuntu | erlang-xmerl (1:27.3+dfsg-1ubuntu1.1) @ plucky | 2026-11-01 | ubuntu |
| ubuntu | erlang-xmerl (1:18.3-dfsg-1ubuntu3.1+esm1) @ xenial | 2026-11-01 | ubuntu |
| ubuntu | erlang-xmerl (1:25.3.2.12+dfsg-1ubuntu2.3) @ oracular | 2026-11-01 | ubuntu |
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)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| erlang | 1:23.2.6+dfsg-1, 1:23.2.6+dfsg-1+deb11u1 |
| — |
Debian:12(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| erlang | 1:25.2.3+dfsg-1 |
| — |
Debian:13(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| erlang | — |
| — |
Debian:14(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| erlang | — |
| — |
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.
- 2026-11-01 16:21 UTCEG score recompute
- 2026-11-01 16:21 UTCVendor advisory
- 2026-10-31 14:39 UTCEG score recompute
- 2026-10-31 14:39 UTCVendor advisory
- 2026-10-30 12:59 UTCEG score recompute
- 2026-10-30 12:59 UTCVendor advisory
- 2026-10-29 11:18 UTCEG score recompute
- 2026-10-29 11:18 UTCVendor advisory
- 2026-10-28 09:38 UTCEG score recompute
- 2026-10-27 16:30 UTCEPSS rescoreEPSS 99% · 99th percentile
- 2026-10-27 07:57 UTCEG score recompute
- 2026-10-27 07:57 UTCVendor advisory
- 2026-10-26 06:17 UTCVendor advisory
- 2026-10-25 16:34 UTCEG score recompute
- 2026-10-25 16:31 UTCEPSS rescoreEPSS 99% · 99th percentile
- 2026-10-25 04:37 UTCEG score recompute
- 2026-10-25 04:37 UTCVendor advisory
- 2026-10-24 02:58 UTCEG score recompute
- 2026-10-24 02:58 UTCVendor advisory
- 2026-10-23 01:18 UTCEG score recompute
- 2026-10-23 01:18 UTCVendor advisory
- 2026-10-21 23:37 UTCEG score recompute
- 2026-10-21 23:37 UTCVendor advisory
- 2026-10-20 21:57 UTCEG score recompute
- 2026-10-20 21:57 UTCVendor advisory
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- 2026-10-19 20:17 UTCEG score recompute
- 2026-10-19 20:17 UTCVendor advisory
- 2026-10-19 16:30 UTCEPSS rescoreEPSS 99% · 99th percentile
- 2026-10-18 18:36 UTCEG score recompute
- 2026-10-18 18:36 UTCVendor advisory
- 2026-10-18 16:30 UTCEPSS rescoreEPSS 99% · 99th percentile
- 2026-10-18 05:38 UTCEG score recompute
- 2026-10-17 16:55 UTCEG score recompute
- 2026-10-17 16:55 UTCVendor advisory
- 2026-10-17 16:32 UTCEPSS rescoreEPSS 99% · 99th percentile
- 2026-10-16 15:15 UTCEG score recompute
- 2026-10-15 13:35 UTCEG score recompute
- 2026-10-14 11:53 UTCEG score recompute
- 2026-10-13 10:13 UTCVendor advisory
- 2026-10-12 17:10 UTCEG score recompute
- 2026-10-12 08:32 UTCVendor advisory
- 2026-10-12 04:35 UTCVendor advisory
- 2026-10-12 00:39 UTCVendor advisory
- 2026-10-11 20:43 UTCVendor advisory
- 2026-10-11 20:43 UTCEG score recompute
- 2026-10-11 16:45 UTCEG score recompute
- 2026-10-11 16:45 UTCVendor advisory
- 2026-10-11 15:31 UTCEG score recompute
- 2026-10-11 12:49 UTCEG score recompute
- 2026-10-11 12:49 UTCVendor advisory
- 2026-10-11 08:52 UTCVendor advisory
- 2026-10-11 04:56 UTCVendor advisory
- 2026-10-11 01:00 UTCVendor advisory
- 2026-10-10 21:04 UTCVendor advisory
- 2026-10-10 17:05 UTCVendor advisory
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- 2026-10-09 01:43 UTCVendor advisory
- 2026-10-08 21:47 UTCVendor advisory
- 2026-10-08 17:51 UTCVendor advisory
- 2026-10-08 13:55 UTCVendor advisory
- 2026-10-08 09:57 UTCVendor advisory
- 2026-10-08 06:00 UTCVendor advisory
- 2026-10-08 02:05 UTCVendor advisory
- 2026-10-07 22:09 UTCVendor advisory
- 2026-10-07 18:12 UTCVendor advisory
- 2026-10-07 14:15 UTCVendor advisory
- 2026-10-07 10:19 UTCVendor advisory
- 2026-10-07 06:23 UTCVendor advisory
- 2026-10-07 02:25 UTCVendor advisory
- 2026-10-06 22:29 UTCVendor advisory
- 2026-10-06 18:33 UTCVendor advisory
- 2026-10-06 14:37 UTCVendor advisory
- 2026-10-06 10:41 UTCVendor advisory
- 2026-10-06 06:43 UTCVendor advisory
- 2026-10-06 02:46 UTCVendor advisory
- 2026-10-05 22:50 UTCVendor advisory
- 2026-10-05 18:53 UTCEG score recompute
- 2026-10-05 18:53 UTCVendor advisory
- 2026-10-05 17:42 UTCEPSS rescoreEPSS 99% · 99th percentile
- 2026-10-05 14:57 UTCVendor advisory
- 2026-10-05 11:01 UTCVendor advisory
- 2026-10-05 07:05 UTCVendor advisory
- 2026-10-05 03:09 UTCVendor advisory
- 2026-10-04 23:13 UTCVendor advisory
- 2026-10-04 19:17 UTCVendor advisory
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- 2026-10-04 11:23 UTCVendor advisory
- 2026-10-04 07:28 UTCVendor advisory
- 2026-10-04 03:31 UTCVendor advisory
- 2026-10-03 23:36 UTCVendor advisory
- 2026-10-03 19:39 UTCVendor advisory
- 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✓ verifiedPublished May 2, 2025
Erlang OTP Pre-Auth RCE Scanner and Exploit
Open source ↗ - GitHub PoCNiteeshPujari/CVE-2025-32433-PoCPublished 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-2025-32433Published Apr 25, 2025
CVE-2025-32433 Erlang/OTP SSH RCE Exploit SSH远程代码执行漏洞EXP
Open source ↗ - Open source ↗GitHub PoC0xPThree/cve-2025-32433Published Apr 19, 2025
- GitHub PoCdarses/CVE-2025-32433Published Apr 18, 2025
Security research on Erlang/OTP SSH CVE-2025-32433.
Open source ↗ - Open source ↗GitHub PoCekomsSavior/POC_CVE-2025-32433Published Apr 18, 2025
- GitHub PoCexa-offsec/ssh_erlangotp_rcePublished Apr 18, 2025
Exploitation module for CVE-2025-32433 (Erlang/OTP)
Open source ↗ - GitHub PoCLemieOne/CVE-2025-32433Published Apr 18, 2025
Missing Authentication for Critical Function (CWE-306)-Exploit
Open source ↗ - GitHub PoCm0usem0use/erl_mousePublished 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-PoCPublished 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 ↗
Related CVEs(same product + same CWE)
Same product
10 shownDebian:11:erlang
Same CWE
10 shownCWE-306
Frequently asked(6)
What is CVE-2025-32433?
When was the CVE record for CVE-2025-32433 published?
Is CVE-2025-32433 actively exploited?
What is the CVSS score of CVE-2025-32433?
Which products are affected by CVE-2025-32433?
How do I remediate CVE-2025-32433?
Dependency Blast Radius
See which npm, PyPI, Go, and Maven packages are affected by CVE-2025-32433
Is Your Infrastructure Affected by CVE-2025-32433?
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.