{"affected":[{"defaultStatus":"unaffected","product":"libgphoto2","source":"CNA: VulnCheck","vendor":"gPhoto","versions":[{"lessThanOrEqual":"2.5.34","status":"affected","version":"0","versionType":"semver"}]}],"cveId":"CVE-2026-120452","cwes":["CWE-787"],"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.","epss":null,"exploits":[],"kev":null,"metrics":[{"score":5.2,"severity":"medium","source":"CNA: VulnCheck","vector":"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","version":"4.0"},{"score":5.4,"severity":"medium","source":"CNA: VulnCheck","vector":"CVSS:3.1/AV:P/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H","version":"3.1"}],"modifiedAt":1793629750220,"publishedAt":1793629750220,"references":[{"source":"CNA: VulnCheck","tags":["issue-tracking"],"url":"https://github.com/gphoto/libgphoto2/issues/1326"},{"source":"CNA: VulnCheck","tags":["patch"],"url":"https://github.com/gphoto/libgphoto2/commit/af3b8e9c542cda863fb5f2f3cfeb261bd78e4442"},{"source":"CNA: VulnCheck","tags":["patch"],"url":"https://github.com/gphoto/libgphoto2/commit/30bf7ace6d47cfe1232ea73bde2aceb95aba4bfb"},{"source":"CNA: VulnCheck","tags":["technical-description"],"url":"https://github.com/gphoto/libgphoto2/blob/v2.5.34/camlibs/jl2005c/jl2005bcd_decompress.c#L127-L130"},{"source":"CNA: VulnCheck","tags":["technical-description"],"url":"https://hackmd.io/@haindpwn/libgphoto2-jl2005c-init-alloc-table-buffer-overflow"},{"source":"CNA: VulnCheck","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/libgphoto2-through-2.5.34-heap-out-of-bounds-read-write-via-jl2005c-thumbnail-conversion"}],"remediation":[],"revision":"1057f04222a47b14f9d95686688d8fc5906ae72aea8d9a9eda4e3376888b139f","sources":[{"modifiedAt":1793629750220,"name":"CNA: VulnCheck","retrievedAt":1793632133320,"url":"https://www.cve.org/CVERecord?id=CVE-2026-120452"}],"ssvc":null,"status":"published","title":"libgphoto2 through 2.5.34 Heap Out-of-Bounds Read/Write via jl2005c Thumbnail Conversion","updatedAt":1793632133320}