Vulnerability · NVD

CVE-2025-0239

CVE-2025-0239, medium severity (CVSS 4.0): 2 tracked apps concerned, all fixed or indeterminable on their current version.

Severity (CVSS): 4.0
Exploitation: 0.2 %
Tracked apps: 2
Still exposed: 0

Published on 2025-01-07

When using Alt-Svc, ALPN did not properly validate certificates when the original server is redirecting to an insecure site. This vulnerability was fixed in Firefox 134, Firefox ESR 128.6, Thunderbird 134, and Thunderbird 128.6.

Attack vector : Local No privileges required No user interaction

Show raw CVSS vector

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

EPSS 0.23% exploit very unlikely percentile 12.1%

Tracked apps referencing this CVE

For each app: the affected range, the fixing version, and where the tracked app stands today.

Mozilla Firefox Windows winget:Mozilla.Firefox

Affected <128.6.0 Fixed in 128.6.0 Latest tracked 157.0 patched

Observed affected builds (90)

128.0.3 128.0.2 128.0 127.0.2 127.0.1 127.0 126.0.1 126.0 125.0.3 125.0.2 125.0.1 124.0.2 124.0.1 124.0 123.0.1 123.0 122.0.1 122.0 121.0.1 121.0 120.0.1 120.0 119.0.1 119.0 118.0.2 118.0.1 118.0 117.0.1 117.0 116.0.3 +60 · see history
Mozilla Thunderbird Windows winget:Mozilla.Thunderbird

Affected <128.6.0 Fixed in 128.6.0 Latest tracked 156.0.1 patched

Observed affected builds (87)

115.14.0 115.13.0 115.12.2 115.12.1 115.11.1 115.11.0 115.10.2 115.10.1 115.10.0 115.9.0 115.8.1 115.8.0 115.7.0 115.6.1 115.6.0 115.5.2 115.5.1 115.4.2 115.4.1 115.3.3 115.3.2 115.3.1 115.3.0 115.2.3 115.2.2 115.0 102.15.0 102.14.0 102.13.0 102.12.0 +57 · see history

Vulnerable CPE configurations (4)

Vendor	Product	Platform	Versions	CPE 2.3 URI
mozilla	firefox All platforms (wildcard)	All platforms (wildcard)	<128.6.0	cpe:2.3:a:mozilla:firefox:::::esr:::*
mozilla	firefox All platforms (wildcard)	All platforms (wildcard)	<134.0	cpe:2.3:a:mozilla:firefox::::::::
mozilla	thunderbird All platforms (wildcard)	All platforms (wildcard)	<128.6.0	cpe:2.3:a:mozilla:thunderbird::::::::
mozilla	thunderbird All platforms (wildcard)	All platforms (wildcard)	≥129.0 <134.0	cpe:2.3:a:mozilla:thunderbird::::::::

View on NVD ↗ Advisory · www.mozilla.org

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