{"id":"CVE-2026-120457","aliases":["AZL-112580","DEBIAN-CVE-2026-120457","EUVD-2026-115217","GHSA-6vjr-59w2-48mg","UBUNTU-CVE-2026-120457","openSUSE-SU-2026:12461-1"],"status":"published","title":"libaec through 1.1.7 Out-of-Bounds Read via m_se_decode() Second Extension Decoder","description":"libaec through 1.1.7 contains an out-of-bounds read vulnerability in m_se_decode() in src/decode.c that allows attackers to bypass a signed bounds check via an overlong fundamental sequence. Attackers can supply a crafted CCSDS 121.0/SZIP stream with 2^31 or more zero bits to crash the decoder or leak adjacent memory into decoded samples.","severity":{"version":"4.0","score":5.8,"vector":"CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:P/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.0024,"percentile":0.15292,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-196"],"published":"2026-11-02T14:29:13Z","modified":"2026-11-12T05:00:08Z","fixes":[{"ecosystem":"Debian:14","package":"libaec","fixed_in":["1.1.8-1"],"sources":["osv"]},{"ecosystem":"openSUSE:Tumbleweed","package":"libaec","fixed_in":["1.1.8-1.1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Azure Linux:3","package":"libaec","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"1.1.3-1"}]}]},{"source":"osv","ecosystem":"Debian:12","package":"libaec","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.0.6-1","1.1.1-1","1.1.2-1","1.1.3-1","1.1.4-1","1.1.4-2","1.1.5-1","1.1.6-1","1.1.7-1","1.1.8-1"]},{"source":"osv","ecosystem":"Debian:13","package":"libaec","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.1.3-1","1.1.4-1","1.1.4-2","1.1.5-1","1.1.6-1","1.1.7-1","1.1.8-1"]},{"source":"osv","ecosystem":"Debian:14","package":"libaec","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.1.8-1"}]}],"versions":["1.1.3-1","1.1.4-1","1.1.4-2","1.1.5-1","1.1.6-1","1.1.7-1"]},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"libaec","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.3.2-1"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"libaec","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.3.2-2"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"libaec","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.0.4-1"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"libaec","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.0.4-3","1.0.6-1"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"libaec","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.0.6-1","1.1.2-1","1.1.2-1build1"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"libaec","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.1.5-1","1.1.7-1"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"libaec","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.1.3-1","1.1.4-2","1.1.5-1"]},{"source":"osv","ecosystem":"openSUSE:Tumbleweed","package":"libaec","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.1.8-1.1"}]}]}],"products":[{"vendor":"deutsches klimarechenzentrum","product":"libaec"}],"references":[{"url":"https://github.com/Deutsches-Klimarechenzentrum/libaec/issues/64","tags":["issue-tracking","report"]},{"url":"https://github.com/Deutsches-Klimarechenzentrum/libaec/pull/66","tags":["issue-tracking","patch","fix","report"]},{"url":"https://github.com/Deutsches-Klimarechenzentrum/libaec/blob/v1.1.7/src/decode.c#L556-L586","tags":["technical-description","article","report"]},{"url":"https://github.com/Deutsches-Klimarechenzentrum/libaec/releases/tag/v1.1.7","tags":["release-notes","advisory","report"]},{"url":"https://hackmd.io/@haindpwn/libaec-se-decode-fs-signedness-oob-read","tags":["technical-description","exploit","article","report"]},{"url":"https://www.vulncheck.com/advisories/libaec-through-1.1.7-out-of-bounds-read-via-m-se-decode-second-extension-decoder","tags":["third-party-advisory","advisory","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-120457","tags":["web","advisory"]},{"url":"https://github.com/advisories/GHSA-6vjr-59w2-48mg"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/120xxx/CVE-2026-120457.json","tags":["advisory"]},{"url":"https://github.com/Deutsches-Klimarechenzentrum/libaec","tags":["package"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-120457","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-120457","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-120457","tags":["report"]},{"url":"","tags":["advisory"]},{"url":"https://www.suse.com/security/cve/CVE-2026-120457","tags":["web"]}],"sources":{"cve":[{"id":"CVE-2026-120457","title":"libaec through 1.1.7 Out-of-Bounds Read via m_se_decode() Second Extension Decoder","description":"libaec through 1.1.7 contains an out-of-bounds read vulnerability in m_se_decode() in src/decode.c that allows attackers to bypass a signed bounds check via an overlong fundamental sequence. Attackers can supply a crafted CCSDS 121.0/SZIP stream with 2^31 or more zero bits to crash the decoder or leak adjacent memory into decoded samples.","status":"published","published":"2026-11-02T14:29:13.799Z","modified":"2026-11-02T15:46:06.742Z","cvss":[{"version":"4.0","score":5.8,"vector":"CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:P/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N","level":"medium","assessor":"cna"},{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:H","level":"medium","assessor":"cna"}],"cwes":["CWE-196"],"updated_at":"2026-11-02T18:00:08.034842Z"}],"euvd":[{"id":"EUVD-2026-115217","description":"libaec through 1.1.7 contains an out-of-bounds read vulnerability in m_se_decode() in src/decode.c that allows attackers to bypass a signed bounds check via an overlong fundamental sequence. Attackers can supply a crafted CCSDS 121.0/SZIP stream with 2^31 or more zero bits to crash the decoder or leak adjacent memory into decoded samples.","status":"published","published":"2026-11-02T14:29:13Z","modified":"2026-11-02T15:46:06Z","cvss":[{"version":"4.0","score":5.8,"vector":"CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:P/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N","level":"medium"}],"updated_at":"2026-11-03T05:08:40.757493Z"}],"ghsa":[{"id":"GHSA-6vjr-59w2-48mg","title":"libaec through 1.1.7 contains an out-of-bounds read vulnerability in m_se_decode() in src/decode...","description":"libaec through 1.1.7 contains an out-of-bounds read vulnerability in m_se_decode() in src/decode.c that allows attackers to bypass a signed bounds check via an overlong fundamental sequence. Attackers can supply a crafted CCSDS 121.0/SZIP stream with 2^31 or more zero bits to crash the decoder or leak adjacent memory into decoded samples.","status":"published","published":"2026-11-02T15:31:45Z","modified":"2026-11-02T15:31:50Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:H","level":"medium"},{"version":"4.0","score":5.8,"vector":"CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:P/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"medium"}],"cwes":["CWE-196"],"updated_at":"2026-11-02T18:00:16.184668Z"}],"nvd":[{"id":"CVE-2026-120457","description":"libaec through 1.1.7 contains an out-of-bounds read vulnerability in m_se_decode() in src/decode.c that allows attackers to bypass a signed bounds check via an overlong fundamental sequence. 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Attackers can supply a crafted CCSDS 121.0/SZIP stream with 2^31 or more zero bits to crash the decoder or leak adjacent memory into decoded samples.","status":"published","published":"2026-11-02T15:17:00Z","modified":"2026-11-05T04:42:52Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:H","level":"medium"},{"version":"4.0","score":5.8,"vector":"CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:P/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N","level":"medium"}],"updated_at":"2026-11-05T13:33:25.727744Z"},{"id":"AZL-112580","title":"CVE-2026-120457 affecting package libaec 1.1.3-1","description":"libaec through 1.1.7 contains an out-of-bounds read vulnerability in m_se_decode() in src/decode.c that allows attackers to bypass a signed bounds check via an overlong fundamental sequence. Attackers can supply a crafted CCSDS 121.0/SZIP stream with 2^31 or more zero bits to crash the decoder or leak adjacent memory into decoded samples.","status":"published","published":"2026-11-02T15:17:29Z","modified":"2026-11-05T05:40:51Z","updated_at":"2026-11-05T16:41:19.001909Z"},{"id":"openSUSE-SU-2026:12461-1","title":"libaec-devel-1.1.8-1.1 on GA media","description":"These are all security issues fixed in the libaec-devel-1.1.8-1.1 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2026-11-06T00:00:00Z","modified":"2026-11-07T17:23:15.737509755Z","updated_at":"2026-11-07T17:50:39.727056Z"}]}}