How severe is CVE-2025-53499?

CVE-2025-53499 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2025-53499 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (21st percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2025-53499?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2025-53499 have an EU (EUVD) identifier?

Yes. CVE-2025-53499 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-20313.

When was CVE-2025-53499 published?

CVE-2025-53499 was published on 2025-07-07 and last updated on 2026-06-17.

CVE-2025-53499

CVE-2025-53499 is a critical-severity vulnerability with a CVSS 3.x base score of 9.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-862.

Key facts

Severity: Critical (CVSS 3.x base score 9.1)
EPSS exploit prediction: 0% (21st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-20313
Weakness: CWE-862
Published: 2025-07-07
Last modified: 2026-06-17

Description

Missing Authorization vulnerability in Wikimedia Foundation Mediawiki - AbuseFilter Extension allows Unauthorized Access.This issue affects Mediawiki - AbuseFilter Extension: from 1.43.X before 1.43.2.

Frequently asked questions

What is CVE-2025-53499?: Missing Authorization vulnerability in Wikimedia Foundation Mediawiki - AbuseFilter Extension allows Unauthorized Access.This issue affects Mediawiki - AbuseFilter Extension: from 1.43.X before 1.43.2.
How severe is CVE-2025-53499?: CVE-2025-53499 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2025-53499 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (21st percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2025-53499?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2025-53499 have an EU (EUVD) identifier?: Yes. CVE-2025-53499 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-20313.
When was CVE-2025-53499 published?: CVE-2025-53499 was published on 2025-07-07 and last updated on 2026-06-17.

References

Other CWE-862 (Missing Authorization) vulnerabilities

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CVE-2025-45854 — Critical (CVSS 10.0): /server/executeExec of JEHC-BPM 2.0.1 allows attackers to execute arbitrary code via execParams.

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