CVE-2026-92240
Fixed in a distro release EPSS <1%CVSS 9.1
A malicious or compromised IMAP server can trigger an out-of-bounds read in the IMAP response parser by sending an untagged '* ID' response, crashing Thunderbird. The affected parsing path is reachable before authentication. This vulnerability was fixed in Thunderbird 156, Thunderbird 140.16, and Thunderbird 153.3.
Products: Mozilla Thunderbird
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| AlmaLinux 10 | thunderbird | 140.16.0-1.el10_2.alma.1 |
| AlmaLinux 8 | thunderbird | 140.16.0-1.el8_10.alma.1 |
| AlmaLinux 9 | thunderbird | 140.16.0-1.el9_8.alma.1 |
| Debian 12 | thunderbird | 1:140.16.0esr-1~deb12u1 |
| Debian 13 | thunderbird | 1:140.16.0esr-1~deb13u1 |
| Debian 14 | thunderbird | 1:153.3.0esr-1 |
| Red Hat Enterprise Linux 10.2 | thunderbird | 0:140.16.0-1.el10_2 |
| Red Hat Enterprise Linux 10.2 | thunderbird-debuginfo | 0:140.16.0-1.el10_2 |
| Red Hat Enterprise Linux 10.2 | thunderbird-debugsource | 0:140.16.0-1.el10_2 |
| Red Hat Enterprise Linux 8 | thunderbird | 0:140.16.0-1.el8_10 |
| Red Hat Enterprise Linux 8 | thunderbird-debuginfo | 0:140.16.0-1.el8_10 |
| Red Hat Enterprise Linux 8 | thunderbird-debugsource | 0:140.16.0-1.el8_10 |
| Red Hat Enterprise Linux 9 | thunderbird | 0:140.16.0-1.el9_8 |
| Red Hat Enterprise Linux 9 | thunderbird-debuginfo | 0:140.16.0-1.el9_8 |
| Red Hat Enterprise Linux 9 | thunderbird-debugsource | 0:140.16.0-1.el9_8 |
| Red Hat Enterprise Linux eus 10.0 | thunderbird | 0:140.16.0-1.el10_0 |
| Red Hat Enterprise Linux eus 10.0 | thunderbird-debuginfo | 0:140.16.0-1.el10_0 |
| Red Hat Enterprise Linux eus 10.0 | thunderbird-debugsource | 0:140.16.0-1.el10_0 |
| Red Hat rhel aus 8.4 | thunderbird | 0:140.16.0-1.el8_4 |
| Red Hat rhel aus 8.4 | thunderbird-debuginfo | 0:140.16.0-1.el8_4 |
| Red Hat rhel aus 8.4 | thunderbird-debugsource | 0:140.16.0-1.el8_4 |
| Red Hat rhel aus 8.6 | thunderbird | 0:140.16.0-1.el8_6 |
| Red Hat rhel aus 8.6 | thunderbird-debuginfo | 0:140.16.0-1.el8_6 |
| Red Hat rhel aus 8.6 | thunderbird-debugsource | 0:140.16.0-1.el8_6 |
| Red Hat rhel e4s 8.8 | thunderbird | 0:140.16.0-1.el8_8 |
| Red Hat rhel e4s 8.8 | thunderbird-debuginfo | 0:140.16.0-1.el8_8 |
| Red Hat rhel e4s 8.8 | thunderbird-debugsource | 0:140.16.0-1.el8_8 |
| Red Hat rhel e4s 9.2 | thunderbird | 0:140.16.0-1.el9_2 |
| Red Hat rhel e4s 9.2 | thunderbird-debuginfo | 0:140.16.0-1.el9_2 |
| Red Hat rhel e4s 9.2 | thunderbird-debugsource | 0:140.16.0-1.el9_2 |
| Red Hat rhel e4s 9.4 | thunderbird | 0:140.16.0-1.el9_4 |
| Red Hat rhel e4s 9.4 | thunderbird-debuginfo | 0:140.16.0-1.el9_4 |
| Red Hat rhel e4s 9.4 | thunderbird-debugsource | 0:140.16.0-1.el9_4 |
| Red Hat rhel eus 9.6 | thunderbird | 0:140.16.0-1.el9_6 |
| Red Hat rhel eus 9.6 | thunderbird-debuginfo | 0:140.16.0-1.el9_6 |
| Red Hat rhel eus 9.6 | thunderbird-debugsource | 0:140.16.0-1.el9_6 |
| Red Hat rhel eus long life 8.4 | thunderbird | 0:140.16.0-1.el8_4 |
| Red Hat rhel eus long life 8.4 | thunderbird-debuginfo | 0:140.16.0-1.el8_4 |
| Red Hat rhel eus long life 8.4 | thunderbird-debugsource | 0:140.16.0-1.el8_4 |
| Red Hat rhel eus long life 8.6 | thunderbird | 0:140.16.0-1.el8_6 |
| Red Hat rhel eus long life 8.6 | thunderbird-debuginfo | 0:140.16.0-1.el8_6 |
| Red Hat rhel eus long life 8.6 | thunderbird-debugsource | 0:140.16.0-1.el8_6 |
| Red Hat rhel tus 8.8 | thunderbird | 0:140.16.0-1.el8_8 |
| Red Hat rhel tus 8.8 | thunderbird-debuginfo | 0:140.16.0-1.el8_8 |
| Red Hat rhel tus 8.8 | thunderbird-debugsource | 0:140.16.0-1.el8_8 |
| Rocky Linux 10 | thunderbird | 0:140.16.0-1.el10_2 |
| Rocky Linux 8 | thunderbird | 0:140.16.0-1.el8_10 |
| Rocky Linux 9 | thunderbird | 0:140.16.0-1.el9_8 |
| SUSE Linux Enterprise Module for Package Hub 15 SP7 | MozillaThunderbird | 153.4.0-150400.13.6.1 |
| SUSE Linux Enterprise Workstation Extension 15 SP7 | MozillaThunderbird | 153.4.0-150400.13.6.1 |
| Ubuntu 18.04 LTS | mozjs38 | no fix |
| Ubuntu 18.04 LTS | mozjs52 | no fix |
| Ubuntu 20.04 LTS | mozjs52 | no fix |
| Ubuntu 20.04 LTS | mozjs68 | no fix |
| Ubuntu 22.04 LTS | mozjs102 | no fix |
| Ubuntu 22.04 LTS | mozjs78 | no fix |
| Ubuntu 22.04 LTS | mozjs91 | no fix |
| Ubuntu 22.04 LTS | thunderbird | no fix |
| Ubuntu 24.04 LTS | mozjs102 | no fix |
| Ubuntu 24.04 LTS | mozjs115 | no fix |
| openSUSE Tumbleweed | MozillaThunderbird | 140.16.0-1.1 |