{"action":"No fix published. Pin and monitor.","affected":[{"introduced":"0","last_affected":"1.12"}],"component":"uefi-firmware","cve_ids":["CVE-2026-54334"],"ecosystem":"PyPI","epss":0.00801,"exploited":false,"fixed_versions":[],"ghsa_id":"GHSA-hm2w-vr2p-hq7w","id":"tcs_01M5KFKZBGS2DP7SMDE4CDZYH6","modified_at":"2026-07-13T16:43:42.463561576Z","published_at":"2026-04-16T01:31:09Z","references":["https://osv.dev/vulnerability/GHSA-hm2w-vr2p-hq7w","https://github.com/theopolis/uefi-firmware-parser/security/advisories/GHSA-hm2w-vr2p-hq7w","https://github.com/theopolis/uefi-firmware-parser/pull/145","https://github.com/theopolis/uefi-firmware-parser/commit/bf3dfaa8a05675bae6ea0cbfa082ddcebfcde23e","https://github.com/theopolis/uefi-firmware-parser"],"severity":{"label":"critical","score":9.8},"sources":[{"source":"osv","source_id":"GHSA-hm2w-vr2p-hq7w","url":"https://osv.dev/vulnerability/GHSA-hm2w-vr2p-hq7w"}],"summary":"UEFI Firmware Parser has a heap out-of-bounds write in tiano decompressor ReadCLen"}