{"id":"CVE-2023-40481","aliases":["DEBIAN-CVE-2023-40481","EUVD-2023-45052","GHSA-cxpp-vp7p-m7fw","UBUNTU-CVE-2023-40481"],"status":"published","title":"7-Zip SquashFS File Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability","description":"7-Zip SquashFS File Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of 7-Zip. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.\n\nThe specific flaw exists within the parsing of SQFS files. The issue results from the lack of proper validation of user-supplied data, which can result in a write past the end of an allocated buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-18589.","severity":{"version":"3.0","score":7.8,"vector":"CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.13836,"percentile":0.96549,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-787"],"published":"2024-05-03T02:11:15Z","modified":"2026-10-26T18:02:31Z","fixes":[{"ecosystem":"Debian:12","package":"7zip","fixed_in":["22.01+really25.01+dfsg-0+deb12u1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"7zip","fixed_in":["23.01+dfsg-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"7zip","fixed_in":["23.01+dfsg-1"],"sources":["osv"]},{"ecosystem":"Debian:12","package":"p7zip","fixed_in":["16.02+really25.01+dfsg-0+deb12u1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"p7zip","fixed_in":["16.02+transitional.1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"7zip","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"22.01+really25.01+dfsg-0+deb12u1"}]}],"versions":["22.01+dfsg-10~exp1","22.01+dfsg-8","22.01+dfsg-8+deb12u1","22.01+dfsg-9"]},{"source":"osv","ecosystem":"Debian:13","package":"7zip","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"23.01+dfsg-1"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"7zip","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"23.01+dfsg-1"}]}]},{"source":"osv","ecosystem":"Debian:12","package":"p7zip","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"16.02+really25.01+dfsg-0+deb12u1"}]}],"versions":["16.02+dfsg-8"]},{"source":"osv","ecosystem":"Debian:13","package":"p7zip","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"16.02+transitional.1"}]}]},{"source":"osv","ecosystem":"Ubuntu:Pro:22.04:LTS","package":"7zip","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["21.03~beta+dfsg-6","21.04~beta+dfsg-1","21.06+dfsg-1","21.07+dfsg-1","21.07+dfsg-2","21.07+dfsg-3","21.07+dfsg-4","21.07+dfsg-4ubuntu0.1~esm1"]}],"products":[{"vendor":"7-zip","product":"7-zip"}],"references":[{"url":"https://www.zerodayinitiative.com/advisories/ZDI-23-1164/","tags":["x_research-advisory","x_transferred","Third Party Advisory","advisory","report"]},{"url":"https://sourceforge.net/p/sevenzip/discussion/45797/thread/713c8a8269/","tags":["vendor-advisory","x_transferred","Product","Release Notes","advisory","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-40481"},{"url":"https://sourceforge.net/p/sevenzip/discussion/45797/thread/713c8a8269"},{"url":"https://www.zerodayinitiative.com/advisories/ZDI-23-1164"},{"url":"https://github.com/advisories/GHSA-cxpp-vp7p-m7fw"},{"url":"https://security-tracker.debian.org/tracker/CVE-2023-40481","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2023-40481","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2023-40481","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2023-40481","title":"7-Zip SquashFS File Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability","description":"7-Zip SquashFS File Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of 7-Zip. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.\n\nThe specific flaw exists within the parsing of SQFS files. The issue results from the lack of proper validation of user-supplied data, which can result in a write past the end of an allocated buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-18589.","status":"published","published":"2024-05-03T02:11:15.923Z","modified":"2024-08-02T18:31:53.795Z","cvss":[{"version":"3.0","score":7.8,"vector":"CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-787"],"updated_at":"2026-11-02T14:35:22.309324Z"}],"euvd":[{"id":"EUVD-2023-45052","description":"7-Zip SquashFS File Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of 7-Zip. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.\n\nThe specific flaw exists within the parsing of SQFS files. The issue results from the lack of proper validation of user-supplied data, which can result in a write past the end of an allocated buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-18589.","status":"published","published":"2024-05-03T02:11:15Z","modified":"2024-08-02T18:31:53Z","cvss":[{"version":"3.0","score":7.8,"vector":"CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-03T03:50:02.143491Z"}],"ghsa":[{"id":"GHSA-cxpp-vp7p-m7fw","title":"7-Zip SquashFS File Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability. This...","description":"7-Zip SquashFS File Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of 7-Zip. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.\n\nThe specific flaw exists within the parsing of SQFS files. The issue results from the lack of proper validation of user-supplied data, which can result in a write past the end of an allocated buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-18589.","status":"published","published":"2024-05-03T03:30:58Z","modified":"2024-05-03T03:31:16Z","cvss":[{"version":"3.0","score":7.8,"vector":"CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-787"],"updated_at":"2026-11-02T14:57:17.176344Z"}],"nvd":[{"id":"CVE-2023-40481","description":"7-Zip SquashFS File Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of 7-Zip. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.\n\nThe specific flaw exists within the parsing of SQFS files. The issue results from the lack of proper validation of user-supplied data, which can result in a write past the end of an allocated buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-18589.","status":"published","published":"2024-05-03T03:15:21.153Z","modified":"2026-06-17T06:18:04.443Z","cvss":[{"version":"3.0","score":7.8,"vector":"CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-787"],"updated_at":"2026-11-02T14:09:12.053868Z"}],"osv":[{"id":"CVE-2023-40481","description":"7-Zip SquashFS File Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of 7-Zip. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.\n\nThe specific flaw exists within the parsing of SQFS files. The issue results from the lack of proper validation of user-supplied data, which can result in a write past the end of an allocated buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-18589.","status":"published","published":"2024-05-03T03:15:21.153Z","modified":"2026-03-14T12:13:30.853124Z","cvss":[{"version":"3.0","score":7.8,"vector":"CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:44:33.244128Z"},{"id":"DEBIAN-CVE-2023-40481","description":"7-Zip SquashFS File Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of 7-Zip. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.  The specific flaw exists within the parsing of SQFS files. The issue results from the lack of proper validation of user-supplied data, which can result in a write past the end of an allocated buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-18589.","status":"published","published":"2024-05-03T03:15:21.153Z","modified":"2026-10-26T18:02:31.692253805Z","cvss":[{"version":"3.0","score":7.8,"vector":"CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:45:39.980321Z"},{"id":"UBUNTU-CVE-2023-40481","description":"7-Zip SquashFS File Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of 7-Zip. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the parsing of SQFS files. The issue results from the lack of proper validation of user-supplied data, which can result in a write past the end of an allocated buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-18589.","status":"published","published":"2024-05-03T03:15:00Z","modified":"2025-10-24T05:02:15Z","cvss":[{"version":"3.0","score":7.8,"vector":"CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T16:54:22.741943Z"}]}}