{"schema":"threatline.record/2","record":{"id":"CVE-2026-111139","aliases":[],"summary":"NetSurf libnsbmp through 0.1.7 Out-of-Bounds Read via bmp_decode_mask","details":"NetSurf libnsbmp through 0.1.7 contains an out-of-bounds read vulnerability in bmp_decode_mask() that allows attackers to read one byte past the image buffer by supplying crafted ICO files. Attackers can provide an ICO whose inner bitmap width is not a multiple of 8, causing a heap over-read that can crash applications calling bmp_decode().","categories":["Unclassified"],"product":"libnsbmp","vendor":"NetSurf","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-111139","source_modified_at":"2026-10-15T18:57:31.959Z","fetched_at":"2026-10-23T18:48:36.087640Z","product":"libnsbmp","vendor":"NetSurf","versions":[{"version":"0","lessThanOrEqual":"0.1.7","status":"affected","versionType":"custom"}],"defaultStatus":"unaffected"}],"fixed_versions":[],"cvss":6.8,"severity":"Medium","kev":{"listed":false},"epss":{"probability":0.0013,"percentile":0.02363,"score_date":"2026-10-23"},"published_at":"2026-10-15T18:57:31.959Z","modified_at":"2026-10-15T18:57:31.959Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-111139","fetched_at":"2026-10-23T18:48:36.087640Z","source_modified_at":"2026-10-15T18:57:31.959Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-111139","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://hackmd.io/@haind-pwn/libnsbmp-rle-absolute-pad-and-ico-mask-oob-read","tags":["technical-description","exploit"]},{"source":"CVE List","url":"https://github.com/netsurf-browser/libnsbmp/blob/ea063c9f46acb43e90208da14073332b505ef7e7/src/libnsbmp.c#L835-L873","tags":["technical-description"]},{"source":"CVE List","url":"https://download.netsurf-browser.org/libs/releases/libnsbmp-0.1.7-src.tar.gz","tags":["product"]},{"source":"CVE List","url":"https://github.com/netsurf-browser/libnsbmp","tags":["product"]},{"source":"CVE List","url":"https://www.vulncheck.com/advisories/netsurf-libnsbmp-through-0.1.7-out-of-bounds-read-via-bmp-decode-mask","tags":["third-party-advisory"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-10-15T18:57:31.959Z","content_hash":"5864ccb4b34d399b73d1890712019730ef214d15dfc03cd1c6724741e5362601"}}