{"id":"UBUNTU-CVE-2025-55763","details":"Buffer Overflow in the URI parser of CivetWeb 1.14 through 1.16 (latest) allows a remote attacker to achieve remote code execution via a crafted HTTP request. This vulnerability is triggered during request processing and may allow an attacker to corrupt heap memory, potentially leading to denial of service or arbitrary code execution.","modified":"2026-09-14T11:17:10.854751343Z","published":"2025-08-29T17:15:00Z","related":["USN-8749-1"],"upstream":["CVE-2025-55763"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2025-55763"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2025-55763"},{"type":"REPORT","url":"https://github.com/krispybyte/CVE-2025-55763"},{"type":"REPORT","url":"https://github.com/civetweb/civetweb/pull/1347"},{"type":"REPORT","url":"https://github.com/civetweb/civetweb"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-8749-1"}],"affected":[{"package":{"name":"civetweb","ecosystem":"Ubuntu:Pro:22.04:LTS","purl":"pkg:deb/ubuntu/civetweb?arch=source&distro=esm-apps%2Fjammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.15+dfsg-3ubuntu0.1~esm1"}]}],"versions":["1.13+dfsg-5","1.15+dfsg-1","1.15+dfsg-3"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro","binaries":[{"binary_name":"civetweb","binary_version":"1.15+dfsg-3ubuntu0.1~esm1"},{"binary_name":"libcivetweb1","binary_version":"1.15+dfsg-3ubuntu0.1~esm1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-55763.json"}},{"package":{"name":"civetweb","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/civetweb?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.16+dfsg-1ubuntu0.1"}]}],"versions":["1.16+dfsg-1","1.16+dfsg-1build1"],"ecosystem_specific":{"binaries":[{"binary_version":"1.16+dfsg-1ubuntu0.1","binary_name":"civetweb"},{"binary_name":"libcivetweb1","binary_version":"1.16+dfsg-1ubuntu0.1"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-55763.json"}},{"package":{"name":"civetweb","ecosystem":"Ubuntu:25.10","purl":"pkg:deb/ubuntu/civetweb?arch=source&distro=questing"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.16+dfsg-2"],"ecosystem_specific":{"binaries":[{"binary_name":"civetweb","binary_version":"1.16+dfsg-2"},{"binary_version":"1.16+dfsg-2","binary_name":"libcivetweb1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-55763.json"}},{"package":{"name":"civetweb","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/civetweb?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.16+dfsg-3"}]}],"versions":["1.16+dfsg-2"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"civetweb","binary_version":"1.16+dfsg-3"},{"binary_name":"libcivetweb1","binary_version":"1.16+dfsg-3"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-55763.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]}