CVE-2026-40340: medium-severity vulnerability in gphoto libgphoto2
libgphoto2 has OOB read in ptp_unpack_OI() in ptp-pack.c via malicious PTP ObjectInfo response
Published · Updated
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 6.1epss 0.2%
libgphoto2 is a camera access and control library. Versions up to and including 2.5.33 have an out-of-bounds read vulnerability in `ptp_unpack_OI()` in `camlibs/ptp2/ptp-pack.c` (lines 530–563). The function validates `len < PTP_oi_SequenceNumber` (i.e., len < 48) but subsequently accesses offsets 48–56, up to 9 bytes beyond the validated boundary, via the Samsung Galaxy 64-bit objectsize detection heuristic. Commit 7c7f515bc88c3d0c4098ac965d313518e0ccbe33 fixes the issue.
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Affected products
gphoto · libgphoto2Related CVEs — gphoto libgphoto2
In the same product, most dangerous first.
CVE-2026-40333MEDIUMlibgphoto2 has OOB read in ptp_unpack_EOS_ImageFormat() and ptp_unpack_EOS_CustomFuncEx() due to missing length parameter in ptp-pack.cEPSS 0.2%CVE-2026-40339MEDIUMlibgphoto2 has OOB read in ptp_unpack_Sony_DPD() FormFlag parsing in ptp-pack.cEPSS 0.2%CVE-2026-40338MEDIUMlibgphoto2 has OOB read in ptp_unpack_Sony_DPD() enumeration count parsing in ptp-pack.cEPSS 0.2%CVE-2026-40335MEDIUMlibgphoto2 has OOB read in ptp_unpack_DPV() UINT128/INT128 handling in ptp-pack.cEPSS 0.2%CVE-2026-40341LOWlibgphoto2 has an OOB Read in ptp_unpack_EOS_FocusInfoExEPSS 0.2%CVE-2026-40334LOWlibgphoto2 missing null termination in ptp_unpack_Canon_FE() filename buffer in ptp-pack.cEPSS 0.2%