Vulnerability in OpenBSD OpenSSH
CVE-2026-35387
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 3.1 (Low). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N.
EPSS exploit prediction
EPSS: 0.005 (40.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 40th percentile — 40.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.005 · change: +0.003
Affected products
- OpenBSD OpenSSH — versions 0
Weakness classification (CWE)
References
- www.openssh.org/releasenotes.html (Release Notes)
- marc.info/ (Third Party Advisory)
- www.openwall.com/lists/oss-security/2026/04/02/3 (Third Party Advisory)
Frequently asked questions
- What is CVE-2026-35387?
- CVE-2026-35387 is a low-severity vulnerability in OpenBSD OpenSSH, classified under Always-Incorrect Control Flow Implementation. CVSS score: 3.1/10. Published 2026-04-02.
- How severe is CVE-2026-35387?
- Low severity. CVSS v3 base score is 3.1 out of 10.