CVE-2025-2857

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2025-2857
Following the recent Chrome sandbox escape (CVE-2025-2783), various Firefox developers identified a similar pattern in our IPC code. A compromised child process could cause the parent process to return an unintentionally powerful handle, leading to a sandbox escape. The original vulnerability was being exploited in the wild. *This only affects Firefox on Windows. Other operating systems are unaffected.* This vulnerability affects Firefox < 136.0.4, Firefox ESR < 128.8.1, and Firefox ESR < 115.21.1.

10.0 /10

CVSS v3 : CRITICAL

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 6.0

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope CHANGED

References
Link Resource
https://bugzilla.mozilla.org/show_bug.cgi?id=1956398 Permissions Required
https://issues.chromium.org/issues/405143032 Permissions Required
https://www.cve.org/CVERecord?id=CVE-2025-2783 Third Party Advisory
https://www.mozilla.org/security/advisories/mfsa2025-19/ Vendor Advisory
Configurations

Configuration 1 (hide)

cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:*

Configuration 2 (hide)

OR cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:*
cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:*
History

01 May 2025, 19:31

Type Values Removed Values Added
CPE cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:*
cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:*
First Time Mozilla
Mozilla firefox
CWE NVD-CWE-noinfo
Summary
  • (es) Tras la reciente fuga de la sandbox de Chrome (CVE-2025-2783), varios desarrolladores de Firefox identificaron un patrón similar en nuestro código IPC. Un proceso secundario comprometido podía provocar que el proceso principal devolviera un identificador involuntariamente potente, lo que provocaba una fuga de la sandbox. La vulnerabilidad original se estaba explotando in situ. *Esto solo afecta a Firefox en Windows. Otros sistemas operativos no se ven afectados.* Esta vulnerabilidad afecta a Firefox &lt; 136.0.4, Firefox ESR &lt; 128.8.1 y Firefox ESR &lt; 115.21.1.
References () https://bugzilla.mozilla.org/show_bug.cgi?id=1956398 - () https://bugzilla.mozilla.org/show_bug.cgi?id=1956398 - Permissions Required
References () https://issues.chromium.org/issues/405143032 - () https://issues.chromium.org/issues/405143032 - Permissions Required
References () https://www.cve.org/CVERecord?id=CVE-2025-2783 - () https://www.cve.org/CVERecord?id=CVE-2025-2783 - Third Party Advisory
References () https://www.mozilla.org/security/advisories/mfsa2025-19/ - () https://www.mozilla.org/security/advisories/mfsa2025-19/ - Vendor Advisory

28 Mar 2025, 16:15

Type Values Removed Values Added
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 10.0

27 Mar 2025, 20:15

Type Values Removed Values Added
Summary (en) Following the sandbox escape in CVE-2025-2783, various Firefox developers identified a similar pattern in our IPC code. Attackers were able to confuse the parent process into leaking handles to unprivileged child processes leading to a sandbox escape. The original vulnerability was being exploited in the wild. *This only affects Firefox on Windows. Other operating systems are unaffected.* This vulnerability affects Firefox < 136.0.4, Firefox ESR < 128.8.1, and Firefox ESR < 115.21.1. (en) Following the recent Chrome sandbox escape (CVE-2025-2783), various Firefox developers identified a similar pattern in our IPC code. A compromised child process could cause the parent process to return an unintentionally powerful handle, leading to a sandbox escape. The original vulnerability was being exploited in the wild. *This only affects Firefox on Windows. Other operating systems are unaffected.* This vulnerability affects Firefox < 136.0.4, Firefox ESR < 128.8.1, and Firefox ESR < 115.21.1.
References
  • () https://www.cve.org/CVERecord?id=CVE-2025-2783 -

27 Mar 2025, 15:16

Type Values Removed Values Added
Summary (en) Following the sanbdox escape in CVE-2025-2783, various Firefox developers identified a similar pattern in our IPC code. Attackers were able to confuse the parent process into leaking handles into unpriviled child processes leading to a sandbox escape. The original vulnerability was being exploited in the wild. *This only affects Firefox on Windows. Other operating systems are unaffected.* This vulnerability affects Firefox < 136.0.4, Firefox ESR < 128.8.1, and Firefox ESR < 115.21.1. (en) Following the sandbox escape in CVE-2025-2783, various Firefox developers identified a similar pattern in our IPC code. Attackers were able to confuse the parent process into leaking handles to unprivileged child processes leading to a sandbox escape. The original vulnerability was being exploited in the wild. *This only affects Firefox on Windows. Other operating systems are unaffected.* This vulnerability affects Firefox < 136.0.4, Firefox ESR < 128.8.1, and Firefox ESR < 115.21.1.

27 Mar 2025, 14:15

Type Values Removed Values Added
New CVE
Information

Published : 2025-03-27 14:15

Updated : 2025-05-01 19:31

NVD link : CVE-2025-2857

Mitre link : CVE-2025-2857

CVE.ORG link : CVE-2025-2857

JSON object : View

Products Affected

mozilla

  • firefox
CWE
NVD-CWE-noinfo