CVE-2025-10530 — Authentication Bypass by Spoofing in Mozilla Firefox

CWE-290 — Authentication Bypass by Spoofing8 documents7 sources
Severity
6.5MEDIUMNVD
EPSS
0.0%
top 87.81%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
Mozilla FirefoxMozilla Thunderbird
Timeline
PublishedSep 16

Description

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

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:NExploitability: 3.9 | Impact: 2.5

Affected Packages2 packages

▶NVDmozilla/firefox< 143.0
▶NVDmozilla/thunderbird< 143.0

🔴Vulnerability Details

3
OSV
CVE-2025-10530: Spoofing issue in the WebAuthn component in Firefox for Android↗2025-09-16
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CVEList
Spoofing issue in the WebAuthn component in Firefox for Android↗2025-09-16
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GHSA
GHSA-hmr9-3q48-52hr: This vulnerability affects Firefox < 143 and Thunderbird < 143↗2025-09-16
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📋Vendor Advisories

4
Red Hat
firefox: Spoofing issue in the WebAuthn component in Firefox for Android↗2025-09-16
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Debian
CVE-2025-10530: firefox - Spoofing issue in the WebAuthn component in Firefox for Android. This vulnerabil...↗2025
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Mozilla
Mozilla Foundation Security Advisory 2025-77: CVE-2025-10530↗
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Mozilla
Mozilla Foundation Security Advisory 2025-73: CVE-2025-10530↗
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CVE-2025-10530 — Authentication Bypass by Spoofing | cvebase