CVE-2026-35387
6.5
MEDIUM
CVSS 3.1
EPSS 0.05%
Description
OpenSSH before 10.3 can use unintended ECDSA algorithms. Listing of any ECDSA algorithm in PubkeyAcceptedAlgorithms or HostbasedAcceptedAlgorithms is misinterpreted to mean all ECDSA algorithms.
How to fix CVE-2026-35387
To remediate CVE-2026-35387, upgrade the affected package to a fixed version below.
- Debian/openssh—upgrade to 1:8.4p1-5+deb11u7 or later
Is CVE-2026-35387 being exploited?
Low — EPSS is 0.1%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 1:8.4p1-5+deb11u7
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM6.5 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N |