How severe is CVE-2025-62661?

CVE-2025-62661 has a CVSS 4.0 base score of 6.9, rated medium severity.

Is CVE-2025-62661 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (24th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2025-62661?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2025-62661 have an EU (EUVD) identifier?

Yes. CVE-2025-62661 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-35215.

When was CVE-2025-62661 published?

CVE-2025-62661 was published on 2025-10-21 and last updated on 2026-06-17.

CVE-2025-62661

CVE-2025-62661 is a medium-severity vulnerability with a CVSS 4.0 base score of 6.9. 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-276.

Key facts

Severity: Medium (CVSS 4.0 base score 6.9)
EPSS exploit prediction: 0% (24th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-35215
Weakness: CWE-276
Published: 2025-10-21
Last modified: 2026-06-17

Description

Incorrect Default Permissions vulnerability in The Wikimedia Foundation Mediawiki - Thanks Extension, Mediawiki - Growth Experiments Extension allows Accessing Functionality Not Properly Constrained by ACLs.This issue affects Mediawiki - Thanks Extension, Mediawiki - Growth Experiments Extension: from 1.43 before 1.44.

Frequently asked questions

What is CVE-2025-62661?: Incorrect Default Permissions vulnerability in The Wikimedia Foundation Mediawiki - Thanks Extension, Mediawiki - Growth Experiments Extension allows Accessing Functionality Not Properly Constrained by ACLs.This issue affects Mediawiki - Thanks Extension, Mediawiki - Growth Experiments Extension: from 1.43 before 1.44.
How severe is CVE-2025-62661?: CVE-2025-62661 has a CVSS 4.0 base score of 6.9, rated medium severity.
Is CVE-2025-62661 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (24th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2025-62661?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-62661 have an EU (EUVD) identifier?: Yes. CVE-2025-62661 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-35215.
When was CVE-2025-62661 published?: CVE-2025-62661 was published on 2025-10-21 and last updated on 2026-06-17.

References

Other CWE-276 (Incorrect Default Permissions) vulnerabilities

CVE-2022-42150 — Critical (CVSS 10.0): TinyLab linux-lab v1.1-rc1 and cloud-labv0.8-rc2, v1.1-rc1 are vulnerable to insecure permissions. The default…
CVE-2020-29492 — Critical (CVSS 10.0): Dell Wyse ThinOS 8.6 and prior versions contain an insecure default configuration vulnerability. A remote…
CVE-2020-29491 — Critical (CVSS 10.0): Dell Wyse ThinOS 8.6 and prior versions contain an insecure default configuration vulnerability. A remote…
CVE-2025-40585 — Critical (CVSS 9.9): A vulnerability has been identified in Energy Services (All versions with G5DFR). Affected solutions using G5DFR…
CVE-2019-19896 — Critical (CVSS 9.9): In IXP EasyInstall 6.2.13723, there is Remote Code Execution via weak permissions on the Engine Service share. The…
CVE-2020-37129 — Critical (CVSS 9.8): Memu Play 7.1.3 contains an insecure folder permissions vulnerability that allows low-privileged users to modify the…

Browse all CWE-276 (Incorrect Default Permissions) vulnerabilities →