{"id":"CVE-2020-13529","title":"An exploitable denial-of-service vulnerability exists in Systemd 245","summary":"An exploitable denial-of-service vulnerability exists in Systemd 245. A specially crafted DHCP FORCERENEW packet can cause a server running the DHCP client to be vulnerable to a DHCP ACK spoofing attack. An attacker can forge a pair of F…","severity":"medium","cvss":6.1,"cvssVector":"CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H","cwe":["CWE-290","CWE-290"],"vendor":"systemd_project","product":"systemd","affected":["systemd = 245","fedora = 33","active_iq_unified_manager","cloud_backup"],"published":"2021-05-10","updated":"2026-10-14","sourceUpdated":"2026-10-14T10:17:27.337","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2020-13529","references":[{"url":"http://www.openwall.com/lists/oss-security/2021/08/04/2","label":"talos-cna@cisco.com"},{"url":"http://www.openwall.com/lists/oss-security/2021/08/17/3","label":"talos-cna@cisco.com"},{"url":"http://www.openwall.com/lists/oss-security/2021/09/07/3","label":"talos-cna@cisco.com"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/42TMJVNYRY65B4QCJICBYOEIVZV3KUYI/","label":"talos-cna@cisco.com"},{"url":"https://security.gentoo.org/glsa/202107-48","label":"talos-cna@cisco.com"},{"url":"https://security.netapp.com/advisory/ntap-20210625-0005/","label":"talos-cna@cisco.com"},{"url":"https://talosintelligence.com/vulnerability_reports/TALOS-2020-1142","label":"talos-cna@cisco.com"},{"url":"http://www.openwall.com/lists/oss-security/2021/08/04/2","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.openwall.com/lists/oss-security/2021/08/17/3","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.openwall.com/lists/oss-security/2021/09/07/3","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/42TMJVNYRY65B4QCJICBYOEIVZV3KUYI/","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://security.gentoo.org/glsa/202107-48","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://security.netapp.com/advisory/ntap-20210625-0005/","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://talosintelligence.com/vulnerability_reports/TALOS-2020-1142","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-398330.html","label":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"}],"tags":["nvd"],"epss":0.01399,"epssPercentile":0.71761,"ingestedAt":"2026-10-14T10:25:41.188Z","slug":"CVE-2020-13529","body":"## Overview\n\nAn exploitable denial-of-service vulnerability exists in Systemd 245. A specially crafted DHCP FORCERENEW packet can cause a server running the DHCP client to be vulnerable to a DHCP ACK spoofing attack. An attacker can forge a pair of FORCERENEW and DCHP ACK packets to reconfigure the server.\n\n## Affected\n\n- `systemd = 245`\n- `fedora = 33`\n- `active_iq_unified_manager`\n- `cloud_backup`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":34,"depthScoreParts":{"impact":33.6,"likelihood":0.3,"exploitation":0,"ransomware":0},"changes":[]}