CVE-2025-10530

Name: CVE-2025-10530
Creator: NVD / NIST
Published: 2025-09-16T13:15:46.09+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.5/10EPSS 0.27%

Last modified Jun 17, 2026

CVE-2025-10530 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. Spoofing issue in the WebAuthn component in Firefox for Android. This vulnerability was fixed in Firefox 143 and Thunderbird 143.. EPSS estimates a 0.27% chance of exploitation in the next 30 days.

Description

Spoofing issue in the WebAuthn component in Firefox for Android. This vulnerability was fixed in Firefox 143 and Thunderbird 143.

Metrics

CVSS 3.1

6.5/10

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

EPSS Probability

0.27%

19.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-290

Affected Software

Vendor	Product	Versions
Mozilla	Firefox	< 143.0
Mozilla	Thunderbird	< 143.0

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1974025Permissions Required
https://www.mozilla.org/security/advisories/mfsa2025-73/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2025-77/Vendor Advisory

Timeline

Published: Sep 16, 2025
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2025-10530?

Spoofing issue in the WebAuthn component in Firefox for Android. This vulnerability was fixed in Firefox 143 and Thunderbird 143.

How severe is CVE-2025-10530?

CVE-2025-10530 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 0.27% probability of exploitation in the next 30 days.

How do I fix CVE-2025-10530?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-10530?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST