{"id":"CVE-2025-55753","state":"PUBLISHED","title":"Apache HTTP Server: mod_md (ACME), unintended retry intervals","description":"An integer overflow in the case of failed ACME certificate renewal leads, after a number of failures (~30 days in default configurations), to the backoff timer becoming 0. Attempts to renew the certificate then are repeated without delays until it succeeds.\n\nThis issue affects Apache HTTP Server: from 2.4.30 before 2.4.66.\n\n\nUsers are recommended to upgrade to version 2.4.66, which fixes the issue.","publishedAt":"2025-12-05T10:12:22.041Z","updatedAt":"2025-12-05T19:27:31.842Z","severity":{"score":7.5,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","source":"CISA-ADP"},"assigner":"apache","products":["Apache Software Foundation Apache HTTP Server"],"affected":[{"vendor":"Apache Software Foundation","product":"Apache HTTP Server","defaultStatus":"unaffected","versions":[{"version":"2.4.30","status":"affected","lessThan":"2.4.66","versionType":"semver"}]}],"references":["https://httpd.apache.org/security/vulnerabilities_24.html","http://www.openwall.com/lists/oss-security/2025/12/04/4"],"weaknesses":["CWE-190"],"ingestedAt":"2026-10-29T20:09:31.862Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2025/55xxx/CVE-2025-55753.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-55753","state":"PUBLISHED","datePublished":"2025-12-05T10:12:22.041Z","dateUpdated":"2025-12-05T19:27:31.842Z","assignerShortName":"apache","assignerOrgId":"f0158376-9dc2-43b6-827c-5f631a4d8d09","dateReserved":"2025-08-15T08:38:37.265Z"},"containers":{"cna":{"title":"Apache HTTP Server: mod_md (ACME), unintended retry intervals","descriptions":[{"lang":"en","value":"An integer overflow in the case of failed ACME certificate renewal leads, after a number of failures (~30 days in default configurations), to the backoff timer becoming 0. Attempts to renew the certificate then are repeated without delays until it succeeds.\n\nThis issue affects Apache HTTP Server: from 2.4.30 before 2.4.66.\n\n\nUsers are recommended to upgrade to version 2.4.66, which fixes the issue."}],"affected":[{"vendor":"Apache Software Foundation","product":"Apache HTTP Server","defaultStatus":"unaffected","versions":[{"version":"2.4.30","status":"affected","lessThan":"2.4.66","versionType":"semver"}]}],"references":[{"url":"https://httpd.apache.org/security/vulnerabilities_24.html","tags":["vendor-advisory"]}],"metrics":[{"other":{"content":{"text":"low"},"type":"Textual description of severity"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-190","description":"CWE-190 Integer Overflow or Wraparound","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"apache","orgId":"f0158376-9dc2-43b6-827c-5f631a4d8d09","dateUpdated":"2025-12-05T10:12:22.041Z"},"credits":[{"lang":"en","type":"finder","value":"Aisle Research"}],"source":{"discovery":"EXTERNAL"},"timeline":[{"lang":"en","time":"2025-08-15T10:58:00.000Z","value":"reported"},{"lang":"en","time":"2025-11-20T12:00:00.000Z","value":"fixed by r1929884 in 2.4.x"}],"x_generator":{"engine":"Vulnogram 0.2.0"}},"adp":[{"title":"CVE Program Container","references":[{"url":"http://www.openwall.com/lists/oss-security/2025/12/04/4"}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2025-12-05T11:05:52.628Z"}},{"title":"CISA ADP Vulnrichment","metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":7.5,"attackVector":"NETWORK","baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","integrityImpact":"NONE","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"NONE","privilegesRequired":"NONE","confidentialityImpact":"HIGH"}},{"other":{"type":"ssvc","content":{"timestamp":"2025-12-05T19:26:40.760698Z","id":"CVE-2025-55753","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2025-12-05T19:27:31.842Z"}}]}}}