CVE-2026-120452mediumCWE-787

CVE-2026-120452: medium-severity vulnerability in gPhoto libgphoto2

libgphoto2 through 2.5.34 Heap Out-of-Bounds Read/Write via jl2005c Thumbnail Conversion

Published

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13Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 5.2epss 0.2%
libgphoto2 through 2.5.34 contains a heap out-of-bounds read and write vulnerability in jl2005bcd_decompress() that allows malicious USB cameras to corrupt heap memory via oversized thumbnail processing. Attackers can supply small allocation-table values and a thumbnail header byte so in-place byte-swapping exceeds the buffer by about 30 KB, leaking heap contents in preview images.
CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N
Affected products
gPhoto · libgphoto2
Related CVEs — gPhoto libgphoto2

In the same product, most dangerous first.

CVE-2026-120451HIGHlibgphoto2 through 2.5.34 Buffer Overflow via jl2005c Camera DriverEPSS 0.2%