Vulnerability · Published Oct 14, 2025 · Assigned by mozilla
CVE-2025-11710Cross-process information leaked due to malicious IPC messages
Critical 9.8
In plain English
A critical-severity information exposure in Firefox from Mozilla. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 37% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)9.8Critical
Exploit odds (30 days)0.4%top 63.3% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
A compromised web process using malicious IPC messages could have caused the privileged browser process to reveal blocks of its memory to the compromised process. This vulnerability was fixed in Firefox 144, Firefox ESR 115.29, Firefox ESR 140.4, Thunderbird 144, and Thunderbird 140.4.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux:10 | firefox | 140.4.0-3.el10_0 | ALSA-2025:18154 |
| AlmaLinux:8 | firefox | 140.4.0-3.el8_10.alma.1 | ALSA-2025:18285 |
| AlmaLinux:9 | firefox | 140.4.0-3.el9_6.alma.1 | ALSA-2025:18155 |
| AlmaLinux:9 | firefox-x11 | 140.4.0-3.el9_6.alma.1 | ALSA-2025:18155 |
| AlmaLinux:10 | thunderbird | 140.4.0-2.el10_0.alma.1 | ALSA-2025:18320 |
| AlmaLinux:8 | thunderbird | 140.4.0-2.el8_10.alma.1 | ALSA-2025:18983 |
| AlmaLinux:9 | thunderbird | 140.4.0-2.el9_6.alma.1 | ALSA-2025:18321 |
| Debian:12 | firefox-esr | 140.4.0esr-1~deb12u1 | DSA-6025-1 |
| Debian:12 | firefox-esr | 140.4.0esr-1~deb12u1 | DEBIAN-CVE-2025-11710 |
| Debian:13 | firefox-esr | 140.4.0esr-1~deb13u1 | DEBIAN-CVE-2025-11710 |
| Debian:13 | firefox-esr | 140.4.0esr-1~deb13u1 | DSA-6025-1 |
| Debian:14 | firefox-esr | 140.4.0esr-1 | DEBIAN-CVE-2025-11710 |
| Debian:12 | thunderbird | 1:140.4.0esr-1~deb12u1 | DSA-6040-1 |
| Debian:12 | thunderbird | 1:140.4.0esr-1~deb12u1 | DEBIAN-CVE-2025-11710 |
| Debian:13 | thunderbird | 1:140.4.0esr-1~deb13u1 | DSA-6040-1 |
| Debian:13 | thunderbird | 1:140.4.0esr-1~deb13u1 | DEBIAN-CVE-2025-11710 |
| Debian:14 | thunderbird | 1:140.4.0esr-1 | DEBIAN-CVE-2025-11710 |
| Rocky Linux:10 | firefox | 0:140.4.0-3.el10_0 | RLSA-2025:18154 |
| Rocky Linux:8 | firefox | 0:140.4.0-3.el8_10 | RLSA-2025:18285 |
| Rocky Linux:9 | firefox | 0:140.4.0-3.el9_6 | RLSA-2025:18155 |
| Rocky Linux:10 | thunderbird | 0:140.4.0-2.el10_0 | RLSA-2025:18320 |
| Rocky Linux:8 | thunderbird | 0:140.4.0-2.el8_10 | RLSA-2025:18983 |
| Rocky Linux:9 | thunderbird | 0:140.4.0-2.el9_6 | RLSA-2025:18321 |
| Ubuntu:22.04:LTS | mozjs102 | no fix listed | UBUNTU-CVE-2025-11710 |
| Ubuntu:24.04:LTS | mozjs102 | no fix listed | UBUNTU-CVE-2025-11710 |
| Ubuntu:24.04:LTS | mozjs115 | no fix listed | UBUNTU-CVE-2025-11710 |
| Ubuntu:22.04:LTS | mozjs78 | no fix listed | UBUNTU-CVE-2025-11710 |
| Ubuntu:22.04:LTS | mozjs91 | no fix listed | UBUNTU-CVE-2025-11710 |
| Ubuntu:22.04:LTS | thunderbird | 1:140.7.1+build1-0ubuntu0.22.04.1 | UBUNTU-CVE-2025-11710 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Mozilla | Firefox | see references |
| Mozilla | Thunderbird | see references |
Weakness: CWE-200 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=1989899
- https://www.mozilla.org/security/advisories/mfsa2025-81/
- https://www.mozilla.org/security/advisories/mfsa2025-82/
- https://www.mozilla.org/security/advisories/mfsa2025-83/
- https://www.mozilla.org/security/advisories/mfsa2025-84/
- https://www.mozilla.org/security/advisories/mfsa2025-85/
- https://lists.debian.org/debian-lts-announce/2025/10/msg00031.html
- https://lists.debian.org/debian-lts-announce/2025/10/msg00015.html