In OpenSSH before 10.3, command execution can occur via shell metacharacters in a username within a command line. This requires a scenario where the username on the command line is untrusted, and also requires a non-default configurations of % in ssh_config.
CVE-2026-35386
“—” beside the score: it is equal to NVD's CVSS score.
This high-severity CVE scores 8.1 under NVD CVSS v3. EPSS exploit probability: 0.3% (25th percentile of EPSS-scored CVEs). GitHub Security Advisory CVSS 3.6 is lower than this score; a lower GitHub score revises it only when its advisory is newer than the CVE record's last change, and this advisory (published 2026-04-02) is not newer than that change (2026-07-24), so it does not.
Also known asEUVD-2026-18400 (ENISA EUVD) · GHSA-v93f-5rx7-jm73 (GitHub Security Advisories)Source: ENISA EUVD
- High severity, but no confirmed exploitation yet
A fix is available — apply it.
- CVSS v3
- 8.1
- EG Score
- 8.1HIGHmedium confidence
- EG Risk
- 37EG Risk 37/100
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)Severity81% × 45%Impact severity (EG Severity): CVSS 8.1 of 10. Never the KEV-floored or EPSS-lifted EG Score.Exploitation0.3% × 40%FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.Automatability0% × 15%CISA's SSVC Automatable value: no (Vulnrichment).SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Track* at high (mission-essential systems).Exploitation none (CISA Vulnrichment) · Automatable no (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 within your standard update timelines. - EPSS PROB
- 0.3%
- EPSS %ILE
- 25th
- KEV
- Not listed
What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)
The EG score (8.1): severity, escalated by confirmed exploitation. This CVE's 8.1 is its impact severity (EG Severity), not escalated.
- EG Severity
- 8.1 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.NVD CVSS v3 · CVSS v3.0 or v3.1
- EG Likelihood
- 0.3% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-30). FIRST's exploitation probability, not an EchelonGraph model.
- Confirmed exploitation
- None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
- EG Priority
- SSVC Track at medium mission impactTrack at low or medium mission impact; Track* at high (mission-essential systems).CISA BOD 26-04: 14 days if the affected system is publicly exposed; Fix on system upgrade 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)Track at low or medium mission impact; Track* at high (mission-essential systems).
A fix is available. Apply it within your standard update timelines.
Exploitation none (CISA Vulnrichment) · Automatable no (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)14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.
The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable no (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
Published
April 2, 2026
Last Modified
July 24, 2026
Advisory Details (3)
Auto-updated Jul 7, 2026oss-security - Announce: OpenSSH 10.3 released
https://www.openwall.com/lists/oss-security/2026/04/02/3'Announce: OpenSSH 10.3 released' - MARC
https://marc.info/?l=openssh-unix-dev&m=177513443901484&w=2Vendor Advisories for CVE-2026-35386(18)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
- RHSA-2026:74674Red Hat Product SecurityHigh
Red Hat Security Advisory: Red Hat AI Base Images 3.4.3 (Neuron)
- RHSA-2026:58981Red Hat Product SecurityCritical
Red Hat Security Advisory: Red Hat Update Infrastructure 5.3 Technology Preview security update
- RHSA-2026:25096Red Hat Product SecurityHigh
Red Hat Security Advisory: Red Hat AI Inference Server Model Optimization Tools 3.2.2 (cuda)
- RHSA-2026:22564Red Hat Product SecurityHigh
Red Hat Security Advisory: openssh update
- RHSA-2026:22648Red Hat Product SecurityHigh
Red Hat Security Advisory: openssh security update
- CVE-2026-35386Microsoft Security Response Center (MSRC)Low
In OpenSSH before 10.3, command execution can occur via shell metacharacters in a username within a command line. This requires a scenario where the username on the command line is untrusted, and also requires a non-default configurations of % in ssh_config.
- RHSA-2026:22329Red Hat Product SecurityHigh
Red Hat Security Advisory: openssh security update
- RHSA-2026:21398Red Hat Product SecurityHigh
Red Hat Security Advisory: openssh security update
- +10 more
Patch Availability(19)
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 |
|---|---|---|---|
| openssh | 1:8.4p1-5 ... 1:8.4p1-5+deb11u6 (7 versions) |
| — |
Debian:12(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| openssh | 1:9.2p1-2 ... 1:9.2p1-2+deb12u9 (10 versions) |
| — |
Debian:13(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| openssh | 1:10.0p1-7, 1:10.0p1-7+deb13u1, 1:10.0p1-7+deb13u2 |
| — |
Debian:14(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| openssh | 1:10.0p1-7 ... 1:10.3p1-1~bpo13+1 (13 versions) |
| — |
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Additional Vendor Advisories
(2)
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 10× in last 7d / 46× 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 99 of 261 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. 1 repeat row among the latest 100 is merged into the row it repeats. The 162 oldest rows on record are not shown and were not checked, so the counts can still include repeats.
- 2026-11-02 16:44 UTCEPSS rescoreEPSS 0.3% · 25th percentile
- 2026-11-01 16:34 UTCEPSS rescoreEPSS 0.3% · 25th percentile
- 2026-10-31 16:32 UTCEPSS rescoreEPSS 0.3% · 25th percentile
- 2026-10-30 18:46 UTCEG score recompute
- 2026-10-30 18:46 UTCVendor advisory
- 2026-10-30 18:46 UTCGHSA enrichmentGHSA-v93f-5rx7-jm73 · GitHub severity LOW · GitHub CVSS 3.6
- 2026-10-30 16:34 UTCEPSS rescoreEPSS 0.3% · 25th percentile
- 2026-10-29 16:33 UTCEPSS rescoreEPSS 0.3% · 24th percentile
- 2026-10-28 16:32 UTCEPSS rescoreEPSS 0.3% · 24th percentile
- 2026-10-27 16:31 UTCEPSS rescoreEPSS 0.3% · 24th percentile
- 2026-10-26 16:31 UTCEPSS rescoreEPSS 0.3% · 24th percentile
- 2026-10-25 16:32 UTCEPSS rescoreEPSS 0.3% · 24th percentile
- 2026-10-25 14:33 UTCEG score recompute
- 2026-10-24 16:32 UTCEPSS rescoreEPSS 0.4% · 28th percentile
- 2026-10-24 05:04 UTCEG score recompute
- 2026-10-24 05:04 UTCVendor advisory
- 2026-10-24 05:04 UTCGHSA enrichmentGHSA-v93f-5rx7-jm73 · GitHub severity LOW · GitHub CVSS 3.6
- 2026-10-23 16:31 UTCEPSS rescoreEPSS 0.4% · 28th percentile
- 2026-10-22 16:34 UTCEPSS rescoreEPSS 0.4% · 28th percentile
- 2026-10-21 16:33 UTCEPSS rescoreEPSS 0.4% · 28th percentile
- 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.4% · 27th percentile
- 2026-10-19 16:31 UTCEPSS rescoreEPSS 0.4% · 27th percentile
- 2026-10-18 16:31 UTCEPSS rescoreEPSS 0.4% · 27th percentile
- 2026-10-18 03:44 UTCEG score recompute
- 2026-10-17 16:34 UTCEPSS rescoreEPSS 0.4% · 27th percentile
Show 74 moreShow fewer
- 2026-10-17 15:21 UTCEG score recompute
- 2026-10-17 15:21 UTCVendor advisory
- 2026-10-17 15:21 UTCGHSA enrichmentGHSA-v93f-5rx7-jm73 · GitHub severity LOW · GitHub CVSS 3.6
- 2026-10-16 16:41 UTCEPSS rescoreEPSS 0.4% · 27th percentile
- 2026-10-15 16:32 UTCEPSS rescoreEPSS 0.4% · 27th percentile
- 2026-10-14 16:32 UTCEPSS rescoreEPSS 0.4% · 27th percentile
- 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.4% · 27th percentile
- 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.4% · 27th percentile
- 2026-10-12 16:11 UTCEG score recompute
- 2026-10-11 19:54 UTCEG score recompute
- 2026-10-11 17:07 UTCEG score recompute
- 2026-10-11 14:34 UTCEG score recompute
- 2026-10-11 13:48 UTCEPSS rescoreEPSS 0.4% · 27th percentile
- 2026-10-11 02:31 UTCOSV refresh
- 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.4% · 27th percentile
- 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.4% · 27th percentile
- 2026-10-08 17:12 UTCEPSS rescoreEPSS 0.4% · 27th percentile
- 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.4% · 27th percentile
- 2026-10-06 15:17 UTCEPSS rescoreEPSS 0.4% · 27th percentile
- 2026-10-05 17:42 UTCEPSS rescoreEPSS 0.4% · 27th percentile
- 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.4% · 27th percentile
- 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.4% · 27th percentile
- 2026-10-01 19:49 UTCEPSS rescoreEPSS 0.4% · 26th percentile
- 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.4% · 26th percentile
- 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.4% · 26th percentile
- 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.4% · 26th percentile
- 2026-09-26 15:58 UTCEPSS rescoreEPSS 0.4% · 26th percentile
- 2026-09-26 00:26 UTCEPSS rescoreEPSS 0.4% · 26th percentile
- 2026-09-21 13:49 UTCOSV refresh
- 2026-09-20 20:15 UTCEPSS rescoreEPSS 0.3% · 25th percentile
- 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.3% · 25th percentile
- 2026-09-17 19:30 UTCEPSS rescoreEPSS 0.3% · 24th percentile
- 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.3% · 24th percentile
- 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.3% · 24th percentile
- 2026-09-15 03:11 UTCEPSS rescoreEPSS 0.3% · 24th percentile
- 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.3% · 24th percentile
- 2026-09-12 15:01 UTCEPSS rescoreEPSS 0.3% · 24th percentile
- 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.3% · 24th percentile
- 2026-09-11 09:37 UTCEPSS rescoreEPSS 0.3% · 24th percentile
- 2026-09-10 09:34 UTCEPSS rescoreEPSS 0.3% · 24th percentile
- 2026-09-08 22:00 UTCEPSS rescoreEPSS 0.3% · 24th percentile
- 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.3% · 24th percentile
- 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.3% · 24th percentile
- 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.3% · 24th percentile
- 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.3% · 24th percentile
- 2026-09-02 11:34 UTCOSV refresh
- 2026-09-01 13:53 UTCEPSS rescoreEPSS 0.3% · 24th percentile
- 2026-09-01 04:39 UTCEPSS rescoreEPSS 0.3% · 24th percentile
- 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.3% · 24th percentile
- 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.3% · 24th percentile
- 2026-08-28 21:41 UTCEPSS rescoreEPSS 0.3% · 24th percentile
- 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.3% · 24th percentile
- 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.3% · 24th percentile
- 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.3% · 24th percentile
- 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.3% · 24th percentile
- 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.3% · 24th percentile
- 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.3% · 24th percentile
- 2026-08-19 17:03 UTCEPSS rescoreEPSS 0.3% · 24th percentile
- 2026-08-18 13:48 UTCEPSS rescoreEPSS 0.3% · 24th percentile
- 2026-08-17 13:47 UTCEPSS rescoreEPSS 0.3% · 24th percentile
- 2026-08-16 14:56 UTCEPSS rescoreEPSS 0.3% · 24th percentile
- 2026-08-16 09:22 UTCEG score recompute
- 2026-08-16 09:22 UTCVendor advisory
- 2026-08-16 09:22 UTCGHSA enrichmentGHSA-v93f-5rx7-jm73 · GitHub severity LOW · GitHub CVSS 3.6
- 2026-08-16 02:14 UTCEPSS rescoreEPSS 0.3% · 24th percentile
- 2026-08-15 01:30 UTCEPSS rescoreEPSS 0.3% · 24th percentile
- 2026-08-14 18:54 UTCVendor advisory
- 2026-08-14 18:54 UTCGHSA enrichmentGHSA-v93f-5rx7-jm73 · GitHub severity LOW · GitHub CVSS 3.6
- 2026-08-14 05:48 UTCEG score recompute
- 2026-08-14 05:48 UTCVendor advisory
- 2026-08-14 05:48 UTCGHSA enrichmentGHSA-v93f-5rx7-jm73 · GitHub severity LOW · GitHub CVSS 3.6
- 2026-08-13 22:00 UTCEPSS rescoreEPSS 0.3% · 24th percentile
- 2026-08-13 09:58 UTCVendor advisory
- 2026-08-13 09:58 UTCGHSA enrichmentGHSA-v93f-5rx7-jm73 · GitHub severity LOW · GitHub CVSS 3.6
Related CVEs(same product + same vendor + same CWE)
Same product
10 shownDebian:11:openssh
- CVE-2003-0786EG 10.0HIGH
- CVE-2003-0693EG 10.0EPSS p96HIGH
- CVE-2002-0640EG 10.0EPSS p98HIGH
- CVE-2023-51385NVD 6.5EG 9.8EPSS p97CRITICAL
- CVE-2023-38408EG 9.8EPSS p100CRITICAL
- CVE-2016-1908EG 9.8EPSS p97CRITICAL
- CVE-2002-0639EG 9.8EPSS p97CRITICAL
- CVE-2026-60002EG 9.4CRITICAL
- CVE-2023-48795NVD 5.9EG 9.0EPSS p100CRITICAL
- CVE-2018-15473NVD 5.3EG 9.0EPSS p100CRITICAL
Same vendor
10 shownredhat:RHSA-2026:12389 · redhat:RHSA-2026:14937 · redhat:RHSA-2026:21275
Frequently asked(5)
What is CVE-2026-35386?
When was the CVE record for CVE-2026-35386 published?
Is CVE-2026-35386 actively exploited?
What is the CVSS score of CVE-2026-35386?
How do I remediate CVE-2026-35386?
Dependency Blast Radius
See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-35386
Is Your Infrastructure Affected by CVE-2026-35386?
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.