Information disclosure in Mozilla Thunderbird - CVE-2025-2830

Vulnerability identifier: #VU107464

CSH Severity: Low

CVSS v4: 2.1 [CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]

CVE-ID: CVE-2025-2830

CWE-ID: CWE-200

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to an error when handling attachment in a multipart message. A remote attacker can trick the victim into forwarding a specially crafted email and force Thunderbird to include in the message a directory listing of /tmp.

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

Install updates from vendor's website.

Mozilla Thunderbird - addressed in versions 128.9.2, 137.0.2
thunderbird - update to 128.9.0-2.0.1
mozilla-thunderbird - update to 128.9.2esr
thunderbird (Red Hat package) - addressed in versions 128.9.2-1.el8_2, 128.9.2-1.el8_4, 128.9.2-1.el8_6, 128.9.2-1.el8_8, 128.9.2-1.el8_10, 128.9.2-1.el9_0, 128.9.2-1.el9_2, 128.9.2-1.el9_4, 128.9.2-1.el9_5
MozillaThunderbird-debuginfo - update to 128.9.2-150200.8.209.1
MozillaThunderbird - update to 128.9.2-150200.8.209.1
MozillaThunderbird-debugsource - update to 128.9.2-150200.8.209.1
MozillaThunderbird-translations-other - update to 128.9.2-150200.8.209.1
MozillaThunderbird-translations-common - update to 128.9.2-150200.8.209.1
thunderbird (Debian package) - update to 1:128.10.0esr-1~deb12u1
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/mfsa2025-27/
• https://bugzilla.mozilla.org/show_bug.cgi?id=1956379
• https://www.mozilla.org/en-US/security/advisories/mfsa2025-26/

• Multiple vulnerabilities in Mozilla Thunderbird and Thunderbird ESR
• Slackware Linux update for mozilla-thunderbird
• SUSE update for MozillaThunderbird
• Red Hat Enterprise Linux 9 update for thunderbird
• Red Hat Enterprise Linux 8 update for thunderbird
• Debian 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
• Red Hat Enterprise Linux 8 update for thunderbird
• Anolis OS update for thunderbird
• openEuler 24.03 LTS SP2 update for thunderbird
• Ubuntu update for thunderbird