Vulnerability from bitnami_vulndb
Published
2025-12-09 11:38
Modified
2025-12-09 12:08
Summary
Apache HTTP Server: mod_md (ACME), unintended retry intervals
Details
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.
{
"affected": [
{
"package": {
"ecosystem": "Bitnami",
"name": "apache",
"purl": "pkg:bitnami/apache"
},
"ranges": [
{
"events": [
{
"introduced": "2.4.30"
},
{
"fixed": "2.4.66"
}
],
"type": "SEMVER"
}
],
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
}
]
}
],
"aliases": [
"CVE-2025-55753"
],
"database_specific": {
"cpes": [
"cpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:*"
],
"severity": "High"
},
"details": "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.",
"id": "BIT-apache-2025-55753",
"modified": "2025-12-09T12:08:00.393Z",
"published": "2025-12-09T11:38:13.178Z",
"references": [
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2025/12/04/4"
},
{
"type": "WEB",
"url": "https://httpd.apache.org/security/vulnerabilities_24.html"
},
{
"type": "WEB",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-55753"
}
],
"schema_version": "1.6.2",
"summary": "Apache HTTP Server: mod_md (ACME), unintended retry intervals"
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- 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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