CVE-2026-39835
🔶 mediumSummary
SSH servers which use CertChecker as a public key callback without setting IsUserAuthority or IsHostAuthority could be caused to panic by a client presenting a certificate. CertChecker now returns an error instead of panicking when these callbacks are nil.
CVSS Score
5.3
Medium
EPSS Score
0.5
Exploit Probability
Published Date
2026-05-22
First Seen: 2026-05-23
📊 Relative Risk Intelligence
This CVE is Lower Risk - more severe than 19.5% of all 338,292 vulnerabilities in our database.
#272,300
Below average severity
Severity Percentile
🎯 CISA SSVC Assessment Updated: May 22, 2026
🔍 Exploitation Status
None
No known exploits
⚙️ Automatable
NO
Requires human interaction
💥 Technical Impact
Partial
Limited system impact
🏆 Discovered By
NCC Group Cryptography Services, sponsored by Teleport
SSVC data provided by
CISA
Last Modified
2026-07-24
Source
NVD 🔗
CVSS Vector 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L