8.1

CVE-2026-35414: openbsd openssh

CVSS: 8.1v3.1HighAnalyzed
AliasesUBUNTU-CVE-2026-35414USN-8577-1DEBIAN-CVE-2026-35414
Published 02-04-2026Last modified 02-04-2026
Open JSON

Vulnerability summary

CVE-2026-35414 is a high (CVSS 8.1) vulnerability in openbsd openssh. EPSS estimates a 0.24% chance of exploitation in the next 30 days, higher than 14.4% of scored vulnerabilities.

Overall risk
32/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.1/10
010
High · v3.1 (NVD)
EPSS score
0.24%
0%100%
Low · +0.07 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 21 · Related 9
MGASA-2026-0193OPENSUSE-SU-2026:10804-1RHSA-2026:12389RHSA-2026:13380RHSA-2026:13381RHSA-2026:13383

Timeline

  1. 02-04-2026
    PublishedVulnerability first disclosed.
  2. 02-04-2026
    Last modifiedVulnerability information updated.

Description

OpenSSH before 10.3 mishandles the authorized_keys principals option in uncommon scenarios involving a principals list in conjunction with a Certificate Authority that makes certain use of comma characters.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.24%

Chance of exploitation in the next 30 days

Percentile

14%

Versus all other CVEs

30-day change

+0.07 pp

From 0.18% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.24%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Ubuntu2 products
  • openssh< 1:6.6p1-2ubuntu2.13+esm4 | < 1:7.2p2-4ubuntu2.10+esm9 | All versions (No fix recorded) | < 1:7.6p1-4ubuntu0.7+esm6 | < 1:8.2p1-4ubuntu0.13+esm3 | < 1:8.9p1-3ubuntu0.15 | < 1:9.6p1-3ubuntu13.16 | < 1:10.0p1-5ubuntu5.4 | < 1:10.2p1-2ubuntu3.2
  • openssh-ssh1All versions (No fix recorded)
Debian1 product
  • openssh< 1:9.2p1-2+deb12u10 | < 1:10.0p1-7+deb13u3 | < 1:10.3p1-1
Openbsd1 product

3 vendors · 4 products

References

10 links