Spoofing attack in Mozilla Thunderbird - CVE-2025-0510

Vulnerability identifier: #VU103616

CSH Severity: Medium

CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]

CVE-ID: CVE-2025-0510

CWE-ID: CWE-451

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to perform spoofing attack.

The vulnerability exists due to incorrect processing of a sender address if the From field of an email used the invalid group name syntax. A remote attacker can spoof the email content.

Note, the vulnerability is similar to #VU100312 (CVE-2024-49040).

Mozilla Thunderbird
Debian Linux
SUSE Linux Enterprise Workstation Extension 15
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise Real Time 15
SUSE Linux Enterprise Desktop 15
Red Hat Enterprise Linux for ARM 64
Red Hat Enterprise Linux for Power, little endian
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux for x86_64
Anolis OS
Red Hat Enterprise Linux Server - AUS
Red Hat Enterprise Linux Server - TUS
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support
Red Hat Enterprise Linux for x86_64 - Extended Update Support
Red Hat Enterprise Linux for Power, little endian - Extended Update Support
Red Hat Enterprise Linux for ARM 64 - Extended Update Support
SUSE Package Hub 15
openSUSE Leap
Ubuntu
openEuler
Oracle Solaris
Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions
thunderbird (Debian package)
thunderbird (Red Hat package)
thunderbird
MozillaThunderbird-translations-other
MozillaThunderbird-debugsource
MozillaThunderbird-translations-common
MozillaThunderbird-debuginfo
MozillaThunderbird
thunderbird-debuginfo
thunderbird-debugsource
thunderbird-librnp-rnp
thunderbird-wayland
thunderbird (Ubuntu package)

Install updates from vendor's website.

Mozilla Thunderbird - addressed in versions 128.7.0, 135.0
Oracle Solaris - addressed in versions 11.3 ESU 36.34, 11.4 SRU 80
thunderbird (Debian package) - update to 1:128.7.0esr-1~deb12u1
thunderbird (Red Hat package) - addressed in versions 128.7.0-1.el8_2, 128.7.0-1.el8_6, 128.7.0-1.el8_8, 128.7.0-1.el8_10, 128.7.0-1.el9_0, 128.7.0-1.el9_2, 128.7.0-1.el9_4, 128.7.0-1.el9_5
thunderbird - update to 128.7.0-1.0.1
MozillaThunderbird-translations-other - update to 128.7.0-150200.8.200.1
MozillaThunderbird-debugsource - update to 128.7.0-150200.8.200.1
MozillaThunderbird-translations-common - update to 128.7.0-150200.8.200.1
MozillaThunderbird-debuginfo - update to 128.7.0-150200.8.200.1
MozillaThunderbird - update to 128.7.0-150200.8.200.1
thunderbird - update to 128.11.1-1
thunderbird-debuginfo - update to 128.11.1-1
thunderbird-debugsource - update to 128.11.1-1
thunderbird-librnp-rnp - update to 128.11.1-1
thunderbird-wayland - update to 128.11.1-1
thunderbird (Ubuntu package) - update to 1:128.12.0+build1-0ubuntu0.22.04.1

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

• Multiple vulnerabilities in Mozilla Thunderbird ESR
• Multiple vulnerabilities in Mozilla Thunderbird
• Debian update for thunderbird
• Red Hat Enterprise Linux 9 update for thunderbird
• SUSE update for MozillaThunderbird
• Red Hat Enterprise Linux 8 update for thunderbird
• Red Hat Enterprise Linux 9 update for thunderbird
• Red Hat Enterprise Linux 9 update for thunderbird
• Red Hat Enterprise Linux 9 update for thunderbird
• Red Hat Enterprise Linux 8 update for thunderbird
• Red Hat Enterprise Linux 8 update for thunderbird
• Red Hat Enterprise Linux 8 update for thunderbird
• Anolis OS update for thunderbird
• Oracle Solaris update for third-party components
• openEuler 24.03 LTS SP2 update for thunderbird
• Ubuntu update for thunderbird