CVE-2026-40339

MEDIUM EPSS 9.7%
Published Apr 18, 20262mo ago · Modified Jun 17, 20262w ago
5.2 CVSS 3.1
Medium
Find Similar
Published Apr 18, 2026 2mo ago
Last Modified Jun 17, 2026 2w ago

Description

libgphoto2 is a camera access and control library. Versions up to and including 2.5.33 have an out-of-bounds read in `ptp_unpack_Sony_DPD()` in `camlibs/ptp2/ptp-pack.c` (line 842). The function reads the FormFlag byte via `dtoh8o(data, *poffset)` without a prior bounds check. The standard `ptp_unpack_DPD()` at lines 686–687 correctly validates `*offset + sizeof(uint8_t) > dpdlen` before this same read, but the Sony variant omits this check entirely. Commit 09f8a940b1e418b5693f5c11e3016a1ad2cea62d fixes the issue.

CVSS Details

Base Score
5.2
Exploitability
0.9
Impact
4.2
Vector string
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:L
Attack Vector Physical
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality High
Integrity None
Availability Low

Threat Intelligence

EPSS Exploit Probability
9.7% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-125 Out-of-bounds Read Memory Safety

References 2

  • github.com https://github.com/gphoto/libgphoto2/commit/09f8a940b1e418b5693f5c11e3016a1ad2cea62d
  • github.com https://github.com/gphoto/libgphoto2/security/advisories/GHSA-42cm-m9hc-r7q8

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.