CVE-2025-0510: thunderbird — Fix

Description

Thunderbird displayed an incorrect sender address if the From field of an email used the invalid group name syntax that is described in CVE-2024-49040. This vulnerability was fixed in Thunderbird 128.7 and Thunderbird 135.

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CVSS v3.1 Score

6.5

MEDIUM

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

Weakness Type (CWE)

CWE-345 CWE-345

Affected Products

Vendor	Product	Versions
mozilla	thunderbird	128.0.1 — 128.7.0
mozilla	thunderbird	131.0 — 135.0

References

Advisories & Patches

https://www.mozilla.org/security/advisories/mfsa2025-10/ https://www.mozilla.org/security/advisories/mfsa2025-11/

Other References

https://bugzilla.mozilla.org/show_bug.cgi?id=1940570

Frequently Asked Questions

What is CVE-2025-0510? +

Thunderbird displayed an incorrect sender address if the From field of an email used the invalid group name syntax that is described in CVE-2024-49040. This vulnerability was fixed in Thunderbird 128.7 and Thunderbird 135. It has a CVSS v3.1 base score of 6.5 (MEDIUM).

How severe is CVE-2025-0510? +

CVE-2025-0510 has a CVSS v3.1 score of 6.5 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2025-0510? +

CVE-2025-0510 affects products from mozilla, specifically: thunderbird. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-0510? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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