CVE-2025-55753VulnerabilityPublished 6 Jan 2026Updated 8 Oct 2026

SUSE · security update for mod_md

Affects SUSESource GCVE Database

Mentioned vulnerabilities

Authoritative record:CVE-2025-55753· High 7.5

Not known to be exploited · CVSS 7.5 High.

Data as of 26 Oct 2026, 09:15 UTC

CVSS 3.1 base score

7.5High

How severe the flaw is on the 0–10 CVSS scale.

EPSS: 0.4% chance of exploitation in 30 days – higher than 38% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

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

Exploitation evidence

Disclosed: evidence found.
CVE published 5 Dec 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Affected software

Product	Affected	Fixed in
Red Hatredhat/mod_md`pkg:rpm/redhat/mod_md`Other threats	Affected =9.0	Fixed in–

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AI-suggested

Red Hat has released an updated version of the mod_md package (mod_md-2.4.26-1.el9_7.1) for Red Hat Enterprise Linux 9 and related variants. Applying this update will remediate the vulnerability. Users should follow Red Hat's official guidance on applying the update as detailed in the advisory (https://access.redhat.com/articles/11258). Patch status is confirmed as an official fix available from Red Hat.

Description

This update for apache2 fixes the following issues: - CVE-2025-55753: Fixed mod_md (ACME), unintended retry intervals (bsc#1254511) - CVE-2025-58098: Fixed Server Side Includes adds query string to #exec cmd (bsc#1254512) - CVE-2025-65082: Fixed CGI environment variable override (bsc#1254514) - CVE-2025-66200: Fixed mod_userdir+suexec bypass via AllowOverride FileInfo (bsc#1254515)

Impact

The vulnerability affects the mod_md module's retry interval logic, potentially causing unintended behavior in certificate provisioning and renewal automation. While the exact impact details are not specified, the issue is rated as important by Red Hat, indicating a significant security concern that could affect the reliability or security of automated certificate management in affected systems.

Summary

The mod_md module in Apache HTTP Server, responsible for managing domain properties and automating certificate provisioning via the ACME protocol, contains a vulnerability identified as CVE-2025-55753. This vulnerability relates to unintended retry intervals within the module's operation. Red Hat Product Security has rated this issue as important and has released updated packages for Red Hat Enterprise Linux 9 to fix the problem. The advisory references the update mod_md-2.4.26-1.el9_7.1 and provides detailed package information for multiple architectures. No CVSS score is provided in the advisory.

CWE-190Integer Overflow or Wraparound (opens in a new tab)
Base weaknessLikelihood of exploit: Medium
The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.
Requirements
Ensure that all protocols are strictly defined, such that all out-of-bounds behavior can be identified simply, and require strict conformance to the protocol.
Requirements · Language Selection
Use a language that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid.
Architecture and Design · Libraries or Frameworks
Use a vetted library or framework that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid.
OWASP Cheat Sheets
XML Security (opens in a new tab)
Mass Assignment (opens in a new tab)
OWASP ASVS 4.0.3
V5.4.3 (opens in a new tab)
V13.3.1 (opens in a new tab)
V5.1.4 (opens in a new tab)
Attack patterns
Forced Integer Overflow (opens in a new tab)
From MITRE CWE, MITRE CAPEC and OWASP (Top 10, OpenCRE).

References

Community reviews

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 20 Jul 2026, 21:45 UTC

WeaknessesCWE-190

Technical details

References

Community reviews

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