Vulnerability in Mozilla Thunderbird
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N.
EPSS exploit prediction
EPSS: 0.003 (18.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 19th percentile — 18.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.003 · change: +0.000
Affected products
- Mozilla Thunderbird — versions 128.7, 135
Weakness classification (CWE)
Public proof-of-concept exploits
References
- bugzilla.mozilla.org/show_bug.cgi (Permissions Required)
- www.mozilla.org/security/advisories/mfsa2025-10/ (Vendor Advisory)
- www.mozilla.org/security/advisories/mfsa2025-11/ (Vendor Advisory)
Frequently asked questions
- What is CVE-2025-0510?
- CVE-2025-0510 is a medium-severity vulnerability in Mozilla Thunderbird, classified under Insufficient Verification of Data Authenticity. CVSS score: 6.5/10. Published 2025-02-04.
- How severe is CVE-2025-0510?
- Medium severity. CVSS v3 base score is 6.5 out of 10.
- Is CVE-2025-0510 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.