# CVE-2026-40334

## Summary

- **CVE ID:** CVE-2026-40334
- **Severity:** LOW
- **CVSS Score:** 3.5 (CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L)
- **CWE:** CWE-170
- **Published:** Apr 17, 2026
- **Last Modified:** Apr 20, 2026

## Description

libgphoto2 is a camera access and control library. In versions up to and including 2.5.33, a missing null terminator exists in ptp_unpack_Canon_FE() in camlibs/ptp2/ptp-pack.c (line 1377). The function copies a filename into a 13-byte buffer using strncpy without explicitly null-terminating the result. If the source data is exactly 13 bytes with no null terminator, the buffer is left unterminated, leading to out-of-bounds reads in any subsequent string operation. Commit 259fc7d3bfe534ce4b114c464f55b448670ab873 patches the issue.

## Affected Products

- gphoto — libgphoto2 (<= 2.5.33)

## References

- [CNA](https://github.com/gphoto/libgphoto2/security/advisories/GHSA-ph87-cc3j-c6hm)
- [CNA](https://github.com/gphoto/libgphoto2/commit/259fc7d3bfe534ce4b114c464f55b448670ab873)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.19%
- **EPSS Percentile:** 8.4

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