Quick answers
- Is CVE-2026-110925 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-110925 being exploited in the wild.
- How severe is CVE-2026-110925?
- Medium severity, with a CVSS score of 5.4, published 15 October 2026.
- Which products and versions are affected?
- OpenSSH OpenSSH.
- Is there a fix for CVE-2026-110925?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-110925 attacked?
- It is attacked over the network.
- Am I affected by CVE-2026-110925?
- Check whether you run OpenSSH. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
A shell injection vulnerability exists in OpenSSH's handling of the %u token expansion within ProxyCommand and Match exec configuration directives. Usernames containing unescaped '$' characters or non-trailing backslashes are passed directly to the shell without sanitization, allowing an attacker to inject arbitrary shell metacharacters and commands. This requires a vulnerable configuration but can lead to arbitrary code execution in the context of the SSH client.
Affected products
- OpenSSH OpenSSH
Timeline
- 2026-10-15: disclosed