Vulnerability-Lookup

OESA-2026-1064 (CVE-2025-55753)

Vulnerability from osv_openeuler – Published: 2026-01-16 11:10 – Updated: 2026-08-06 11:10 – Source website

Summary

httpd security update

Details

Apache HTTP Server is a powerful and flexible HTTP/1.1 compliant web server.

Security Fix(es):

An integer overflow vulnerability was found in Apache HTTP Server versions 2.4.30 to 2.4.66. In case of failed ACME certificate renewal, after a number of failures (~30 days in default configurations), the backoff timer becomes 0. Certificate renewal attempts are then repeated without delays until successful. This issue affects confidentiality, integrity, and availability.(CVE-2025-55753)

Severity

7.5 (High)


                    
                      CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

References

URL

Type

	https://www.openeuler.org/zh/security/security-bu…	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2025-55753	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "aarch64": [
          "httpd-2.4.58-12.oe2403sp3.aarch64.rpm",
          "httpd-debuginfo-2.4.58-12.oe2403sp3.aarch64.rpm",
          "httpd-debugsource-2.4.58-12.oe2403sp3.aarch64.rpm",
          "httpd-devel-2.4.58-12.oe2403sp3.aarch64.rpm",
          "httpd-tools-2.4.58-12.oe2403sp3.aarch64.rpm",
          "mod_ldap-2.4.58-12.oe2403sp3.aarch64.rpm",
          "mod_md-2.4.58-12.oe2403sp3.aarch64.rpm",
          "mod_proxy_html-2.4.58-12.oe2403sp3.aarch64.rpm",
          "mod_session-2.4.58-12.oe2403sp3.aarch64.rpm",
          "mod_ssl-2.4.58-12.oe2403sp3.aarch64.rpm"
        ],
        "noarch": [
          "httpd-filesystem-2.4.58-12.oe2403sp3.noarch.rpm",
          "httpd-help-2.4.58-12.oe2403sp3.noarch.rpm"
        ],
        "src": [
          "httpd-2.4.58-12.oe2403sp3.src.rpm"
        ],
        "x86_64": [
          "httpd-2.4.58-12.oe2403sp3.x86_64.rpm",
          "httpd-debuginfo-2.4.58-12.oe2403sp3.x86_64.rpm",
          "httpd-debugsource-2.4.58-12.oe2403sp3.x86_64.rpm",
          "httpd-devel-2.4.58-12.oe2403sp3.x86_64.rpm",
          "httpd-tools-2.4.58-12.oe2403sp3.x86_64.rpm",
          "mod_ldap-2.4.58-12.oe2403sp3.x86_64.rpm",
          "mod_md-2.4.58-12.oe2403sp3.x86_64.rpm",
          "mod_proxy_html-2.4.58-12.oe2403sp3.x86_64.rpm",
          "mod_session-2.4.58-12.oe2403sp3.x86_64.rpm",
          "mod_ssl-2.4.58-12.oe2403sp3.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:24.03-LTS-SP3",
        "name": "httpd",
        "purl": "pkg:rpm/openEuler/httpd\u0026distro=openEuler-24.03-LTS-SP3"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.4.58-12.oe2403sp3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "severity": "High"
  },
  "details": "Apache HTTP Server is a powerful and flexible HTTP/1.1 compliant web server.\r\n\r\nSecurity Fix(es):\n\nAn integer overflow vulnerability was found in Apache HTTP Server versions 2.4.30 to 2.4.66. In case of failed ACME certificate renewal, after a number of failures (~30 days in default configurations), the backoff timer becomes 0. Certificate renewal attempts are then repeated without delays until successful. This issue affects confidentiality, integrity, and availability.(CVE-2025-55753)",
  "id": "OESA-2026-1064",
  "modified": "2026-08-06T11:10:06Z",
  "published": "2026-01-16T11:10:06Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-1064"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-55753"
    }
  ],
  "schema_version": "1.7.2",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "httpd security update",
  "upstream": [
    "CVE-2025-55753"
  ]
}

CVE-2025-55753 (GCVE-0-2025-55753)

Vulnerability from cvelistv5 – Published: 2025-12-05 10:12 – Updated: 2025-12-05 19:27

Title

Apache HTTP Server: mod_md (ACME), unintended retry intervals

Summary

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. This issue affects Apache HTTP Server: from 2.4.30 before 2.4.66. Users are recommended to upgrade to version 2.4.66, which fixes the issue.

Severity

7.5 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-12-05 19:26 UTC

CWE

CWE-190 - Integer Overflow or Wraparound

Assigner

apache mitre root

References

2 references

URL	Tags
https://httpd.apache.org/security/vulnerabilities…	vendor-advisory
http://www.openwall.com/lists/oss-security/2025/12/04/4

Impacted products

1 product

Vendor	Product	Version
Apache Software Foundation	Apache HTTP Server	Affected: 2.4.30 , < 2.4.66 (semver)

Credits

Aisle Research

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2025-12-05T11:05:52.628Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "url": "http://www.openwall.com/lists/oss-security/2025/12/04/4"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "NONE",
              "baseScore": 7.5,
              "baseSeverity": "HIGH",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "NONE",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
              "version": "3.1"
            }
          },
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                "id": "CVE-2025-55753",
                "options": [
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                    "Exploitation": "none"
                  },
                  {
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                  },
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                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-12-05T19:26:40.760698Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
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        "providerMetadata": {
          "dateUpdated": "2025-12-05T19:27:31.842Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Apache HTTP Server",
          "vendor": "Apache Software Foundation",
          "versions": [
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              "lessThan": "2.4.66",
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              "versionType": "semver"
            }
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        }
      ],
      "credits": [
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          "type": "finder",
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        }
      ],
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            }
          ],
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      ],
      "metrics": [
        {
          "other": {
            "content": {
              "text": "low"
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        "orgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09",
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      "references": [
        {
          "tags": [
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          ],
          "url": "https://httpd.apache.org/security/vulnerabilities_24.html"
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      "source": {
        "discovery": "EXTERNAL"
      },
      "timeline": [
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          "lang": "en",
          "time": "2025-08-15T10:58:00.000Z",
          "value": "reported"
        },
        {
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          "time": "2025-11-20T12:00:00.000Z",
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Sightings

Author	Source	Type	Date	Other

Nomenclature

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Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

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The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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OESA-2026-1064 (CVE-2025-55753)

CVE-2025-55753 (GCVE-0-2025-55753)

Tags

Sightings

Nomenclature

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