# CVE-2026-65610

## Summary

- **CVE ID:** CVE-2026-65610
- **Severity:** LOW
- **CVSS Score:** 2.4 (CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:A/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N)
- **CWE:** CWE-197
- **Published:** Aug 19, 2026
- **Last Modified:** Aug 20, 2026

## Description

nnn stores homelen variable as uchar_t, which can only represent values in the range 0-255. An attacker who can influence the victim's execution environment can provide an arbitrary HOME path with length that is truncated to 0. The expression (homelen - 1) is promoted to signed int and becomes -1 and producing an out-of-bounds read and an out-of-bounds write one byte before the path buffer. 




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.

## Affected Products

- nnn — nnn (5.2)

## References

- [CNA](https://cert.pl/en/posts/2026/08/CVE-2026-65609)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.12%
- **EPSS Percentile:** 2.4

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._