CVE-2026-40334: Gphoto LIBGPHOTO2

Low severity, CVSS 3.5. EPSS: 0.2% chance of exploitation in the next 30 days.

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: up to and including 2.5.33

Published 2026-04-18. Last modified 2026-06-17.