What is CVE-2026-40334?

CVE-2026-40334 is a low-severity vulnerability in Gphoto Libgphoto2, classified under Improper Null Termination. CVSS score: 3.5/10. Published 2026-04-17.

How severe is CVE-2026-40334?

Low severity. CVSS v3 base score is 3.5 out of 10.

Vulnerability in Gphoto Libgphoto2

CVE-2026-40334

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 buff…

EPSS: 0.000 (0.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 3.5 (Low). Vector: CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L.

Affected products

Gphoto Libgphoto2 — versions <= 2.5.33

Weakness classification (CWE)

CWE-170 — Improper Null Termination

References

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

Frequently asked questions

What is CVE-2026-40334?: CVE-2026-40334 is a low-severity vulnerability in Gphoto Libgphoto2, classified under Improper Null Termination. CVSS score: 3.5/10. Published 2026-04-17.
How severe is CVE-2026-40334?: Low severity. CVSS v3 base score is 3.5 out of 10.