CVE-2026-40334
libgphoto2 missing null termination in ptp_unpack_Canon_FE() filename buffer in ptp-pack.c
CVSS Score
3.5
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-170 |
| Vendor | gphoto |
| Product | libgphoto2 |
| Published | Apr 17, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L Attack Vector
Physical
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
Low
Affected Versions
gphoto / libgphoto2
<= 2.5.33