CVE-2025-8033

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2025-8033
The JavaScript engine did not handle closed generators correctly and it was possible to resume them leading to a nullptr deref. This vulnerability affects Firefox < 141, Firefox ESR < 115.26, Firefox ESR < 128.13, Firefox ESR < 140.1, Thunderbird < 141, Thunderbird < 128.13, and Thunderbird < 140.1.

6.5 /10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 2.8 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References
Link Resource
https://bugzilla.mozilla.org/show_bug.cgi?id=1973990 Permissions Required
https://www.mozilla.org/security/advisories/mfsa2025-56/ Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2025-57/ Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2025-58/ Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2025-59/ Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2025-61/ Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2025-62/ Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2025-63/ Vendor Advisory
Configurations

Configuration 1 (hide)

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

28 Jul 2025, 18:42

Type Values Removed Values Added
References () https://bugzilla.mozilla.org/show_bug.cgi?id=1973990 - () https://bugzilla.mozilla.org/show_bug.cgi?id=1973990 - Permissions Required
References () https://www.mozilla.org/security/advisories/mfsa2025-56/ - () https://www.mozilla.org/security/advisories/mfsa2025-56/ - Vendor Advisory
References () https://www.mozilla.org/security/advisories/mfsa2025-57/ - () https://www.mozilla.org/security/advisories/mfsa2025-57/ - Vendor Advisory
References () https://www.mozilla.org/security/advisories/mfsa2025-58/ - () https://www.mozilla.org/security/advisories/mfsa2025-58/ - Vendor Advisory
References () https://www.mozilla.org/security/advisories/mfsa2025-59/ - () https://www.mozilla.org/security/advisories/mfsa2025-59/ - Vendor Advisory
References () https://www.mozilla.org/security/advisories/mfsa2025-61/ - () https://www.mozilla.org/security/advisories/mfsa2025-61/ - Vendor Advisory
References () https://www.mozilla.org/security/advisories/mfsa2025-62/ - () https://www.mozilla.org/security/advisories/mfsa2025-62/ - Vendor Advisory
References () https://www.mozilla.org/security/advisories/mfsa2025-63/ - () https://www.mozilla.org/security/advisories/mfsa2025-63/ - Vendor Advisory
CPE cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:*
cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:*
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:esr:*:*:*
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:-:*:*:*
First Time Mozilla
Mozilla firefox
Mozilla thunderbird

23 Jul 2025, 14:15

Type Values Removed Values Added
CWE CWE-476
Summary
  • (es) El motor de JavaScript no gestionaba correctamente los generadores cerrados y era posible resumirlos, lo que provocaba una desreferencia nullptr. Esta vulnerabilidad afecta a Firefox &lt; 141, Firefox ESR &lt; 115.26, Firefox ESR &lt; 128.13, Firefox ESR &lt; 140.1, Thunderbird &lt; 141, Thunderbird &lt; 128.13 y Thunderbird &lt; 140.1.
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 6.5

22 Jul 2025, 21:15

Type Values Removed Values Added
New CVE
Information

Published : 2025-07-22 21:15

Updated : 2025-07-28 18:42

NVD link : CVE-2025-8033

Mitre link : CVE-2025-8033

CVE.ORG link : CVE-2025-8033

JSON object : View

Products Affected

mozilla

  • firefox
  • thunderbird
CWE
CWE-476

NULL Pointer Dereference