CVE-2025-3875

HIGH EPSS 23.7%
Published May 14, 20251y ago · Modified Jun 17, 20261w ago
7.5 CVSS 3.1
High
Find Similar
Published May 14, 2025 1y ago
Last Modified Jun 17, 2026 1w ago

Description

Thunderbird parses addresses in a way that can allow sender spoofing in case the server allows an invalid From address to be used. For example, if the From header contains an (invalid) value "Spoofed Name ", Thunderbird treats spoofed@example.com as the actual address. This vulnerability was fixed in Thunderbird 128.10.1 and Thunderbird 138.0.1.

CVSS Details

Base Score
7.5
Exploitability
3.9
Impact
3.6
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality High
Integrity None
Availability None

Threat Intelligence

EPSS Exploit Probability
23.7% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-290

Affected Products 2

VendorProductVersionRange
mozillathunderbird* <128.10.0
mozillathunderbird*≥129.0  –  <138.0.1

References 4

  • bugzilla.mozilla.org https://bugzilla.mozilla.org/show_bug.cgi?id=1950629
    Permissions Required
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2025/05/msg00022.html
  • mozilla.org https://www.mozilla.org/security/advisories/mfsa2025-34/
    Vendor Advisory
  • mozilla.org https://www.mozilla.org/security/advisories/mfsa2025-35/
    Vendor Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.