VDB
CVE-2026-40339
CVE-2026-40339
PUBLISHED
CVSS 5.2 MEDIUM
Reported by GitHub_M · Published April 17, 2026
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.
EPSS 0.20% · 9.8th percentile
Risk Scores
CVSS 3.1
5.2
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:L
EPSS Score
0.20%
9.8th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| gphoto | libgphoto2 | <= 2.5.33 |
| gphoto | libgphoto2 | * |
Timeline
- Apr 17, 2026 CVE Published
- Apr 20, 2026 Security Advisory
- May 18, 2026 EPSS Score
- May 19, 2026 EPSS Score
- May 20, 2026 EPSS Score
- May 21, 2026 EPSS Score
- May 22, 2026 EPSS Score
- May 23, 2026 EPSS Score
- May 24, 2026 EPSS Score
- May 25, 2026 EPSS Score
- May 26, 2026 EPSS Score
- May 27, 2026 EPSS Score