CVE-2025-26695

MEDIUM EPSS 4.1%
Published Mar 10, 20251y ago · Modified Jun 17, 20261w ago
5.3 CVSS 3.1
Medium
Find Similar
Published Mar 10, 2025 1y ago
Last Modified Jun 17, 2026 1w ago

Description

When requesting an OpenPGP key from a WKD server, an incorrect padding size was used and a network observer could have learned the length of the requested email address. This vulnerability was fixed in Thunderbird 136 and Thunderbird 128.8.

CVSS Details

Base Score
5.3
Exploitability
1.8
Impact
3.4
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality Low
Integrity Low
Availability Low

Threat Intelligence

EPSS Exploit Probability
4.1% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Affected Products 2

VendorProductVersionRange
mozillathunderbird* <128.8.0
mozillathunderbird*≥129.0  –  <136.0

References 3

  • bugzilla.mozilla.org https://bugzilla.mozilla.org/show_bug.cgi?id=1883039
    Issue Tracking
  • mozilla.org https://www.mozilla.org/security/advisories/mfsa2025-17/
    Vendor Advisory
  • mozilla.org https://www.mozilla.org/security/advisories/mfsa2025-18/
    Vendor Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.