Cryptographic issues in Mozilla Thunderbird - CVE-2025-26695
Published: July 22, 2025
Vulnerability identifier: #VU113123
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:A/AC:H/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:L/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2025-26695
CWE-ID: CWE-310
Exploitation vector: Adjecent network
Exploit availability:
No public exploit available
Vendor: Mozilla
Affected software:
Mozilla Thunderbird
Mozilla Thunderbird
Detailed vulnerability description
The vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to usage of incorrect padding when downloading OpenPGP key from a WKD server. A remote attacker on the local network can learn the length of the requested email address.
How to mitigate CVE-2025-26695
Install updates from vendor's website.