{"id":"CVE-2022-23990","title":"Expat (aka libexpat) before 2.4.4 has an integer overflow in the doProlog function.","summary":"Expat (aka libexpat) before 2.4.4 has an integer overflow in the doProlog function.","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cwe":["CWE-190","CWE-190"],"vendor":"libexpat_project","product":"libexpat","affected":["libexpat < 2.4.4","nessus < 8.15.3","nessus >= 10.0.0, < 10.1.1","communications_metasolv_solution = 6.3.1","debian_linux = 10.0","debian_linux = 11.0","fedora = 34","fedora = 35","sinema_remote_connect_server < 3.1"],"patched":["libexpat 2.4.4","nessus 10.1.1","sinema_remote_connect_server 3.1"],"published":"2022-01-26","updated":"2026-10-14","sourceUpdated":"2026-10-14T16:17:27.593","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2022-23990","references":[{"url":"https://cert-portal.siemens.com/productcert/pdf/ssa-484086.pdf","label":"cve@mitre.org"},{"url":"https://github.com/libexpat/libexpat/pull/551","label":"cve@mitre.org"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/34NXVL2RZC2YZRV74ZQ3RNFB7WCEUP7D/","label":"cve@mitre.org"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/R7FF2UH7MPXKTADYSJUAHI2Y5UHBSHUH/","label":"cve@mitre.org"},{"url":"https://security.gentoo.org/glsa/202209-24","label":"cve@mitre.org"},{"url":"https://www.debian.org/security/2022/dsa-5073","label":"cve@mitre.org"},{"url":"https://www.oracle.com/security-alerts/cpuapr2022.html","label":"cve@mitre.org"},{"url":"https://www.tenable.com/security/tns-2022-05","label":"cve@mitre.org"},{"url":"https://cert-portal.siemens.com/productcert/pdf/ssa-484086.pdf","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/libexpat/libexpat/pull/551","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/34NXVL2RZC2YZRV74ZQ3RNFB7WCEUP7D/","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/R7FF2UH7MPXKTADYSJUAHI2Y5UHBSHUH/","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://security.gentoo.org/glsa/202209-24","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.debian.org/security/2022/dsa-5073","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.oracle.com/security-alerts/cpuapr2022.html","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.tenable.com/security/tns-2022-05","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-398330.html","label":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-484086.html","label":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"}],"tags":["nvd","exploit-available"],"epss":0.03992,"epssPercentile":0.90302,"exploits":{"github":1,"githubRepos":["https://github.com/Satheesh575555/external_expat_AOSP10_r33_CVE-2022-23990"],"checkedAt":"2026-10-14T16:41:07.235Z"},"exploitAvailable":true,"ingestedAt":"2026-10-14T16:40:32.045Z","slug":"CVE-2022-23990","body":"## Overview\n\nExpat (aka libexpat) before 2.4.4 has an integer overflow in the doProlog function.\n\n## Affected\n\n- `libexpat < 2.4.4`\n- `nessus < 8.15.3`\n- `nessus >= 10.0.0, < 10.1.1`\n- `communications_metasolv_solution = 6.3.1`\n- `debian_linux = 10.0`\n- `debian_linux = 11.0`\n- `fedora = 34`\n- `fedora = 35`\n- `sinema_remote_connect_server < 3.1`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `libexpat 2.4.4`\n- `nessus 10.1.1`\n- `sinema_remote_connect_server 3.1`","depth":"midnight","depthScore":54,"depthScoreParts":{"impact":41.3,"likelihood":0.8,"exploitation":12,"ransomware":0},"changes":[]}