Vulnerability Description
nnn is vulnerable to Out-of-Bound write vulnerability. Due to lack of validation of attacker-controlled length fields deserialized from a session file, a crafted session file can cause nnn to write data beyond the bounds of fixed-size global buffers when loaded with the -s option. An attacker who can place a malicious session file in the victim's nnn session directory can exploit this to corrupt adjacent global state. Maintainer of this project was notified about this vulnerability. It might has been addressed, but the maintainer did not provide a vulnerable version range. Only version 5.2 was tested and confirmed as vulnerable.
Related Weaknesses (CWE)
References
FAQ
What is CVE-2026-65609?
CVE-2026-65609 is a documented vulnerability. nnn is vulnerable to Out-of-Bound write vulnerability. Due to lack of validation of attacker-controlled length fields deserialized from a session file, a crafted session file can cause nnn to write da...
How severe is CVE-2026-65609?
CVSS scoring is not yet available for CVE-2026-65609. Check NVD for updates.
Is there a patch for CVE-2026-65609?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.