Out-of-bounds Write Affecting nnn package, versions *
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-ECHOLATEST-NNN-19012615
- published20 Aug 2026
- disclosed19 Aug 2026
Introduced: 19 Aug 2026
CVE-2026-65609 (opens in a new tab)How to fix?
There is no fixed version for Echo:latest nnn.
NVD Description
Note: Versions mentioned in the description apply only to the upstream nnn package and not the nnn package as distributed by Echo.
See How to fix? for Echo:latest relevant fixed versions and status.
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.