CVE-2026-14316: Heap buffer overflow in boks_sshd revoked-key error handling
Published Oct 1, 2026
·Updated
The revoked-key error path builds a human-readable failure reason using sprintf() into a heap buffer. The allocated buffer is too small for the final formatted message. When sprintf() writes the full message, it can write past the end of the heap allocation.
Affected Software
1 affected component
boks_sshd
Event History
Oct 1, 2026
CVE Published
via MITRE·04:16 PM
Data Sourced
via MITRE·04:16 PM
RemedyDescriptionSeverityWeakness
Data Sourced
via NVD·05:17 PM
DescriptionSeverityWeakness
Frequently Asked Questions
1
What access does an attacker need to attempt exploitation?
The vulnerability is network-reachable and requires no privileges. The supplied vector indicates that user interaction is required.
2
What condition triggers the vulnerable code path?
The issue is reached when boks_sshd handles a revoked-key error and constructs the human-readable failure reason. Exploitation depends on causing that revoked-key error path to be used.