CVE-2026-40333
libgphoto2 has OOB read in ptp_unpack_EOS_ImageFormat() and ptp_unpack_EOS_CustomFuncEx() due to missing length parameter in ptp-pack.c
CVSS Score
6.1
EPSS Score
0.0%
EPSS Percentile
0th
libgphoto2 is a camera access and control library. In versions up to and including 2.5.33, two functions in camlibs/ptp2/ptp-pack.c accept a data pointer but no length parameter, performing unbounded reads. Their callers in ptp_unpack_EOS_events() have xsize available but never pass it, leaving both functions unable to validate reads against the actual buffer boundary. Commit 1817ecead20c2aafa7549dac9619fe38f47b2f53 patches the issue.
| CWE | CWE-125 |
| 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:H/I:N/A:H Attack Vector
Physical
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
High
Affected Versions
gphoto / libgphoto2
<= 2.5.33