Is CVE-2026-120452 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-120452?

CVE-2026-120452 has a CVSS v3 severity of MEDIUM (5.4).

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CVE-2026-120452

Description

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.