CVE-2024-7521

HIGH EPSS 43.4%
Published Aug 6, 20241y ago · Modified Jun 17, 20261w ago
8.8 CVSS 3.1
High
Find Similar
Published Aug 6, 2024 1y ago
Last Modified Jun 17, 2026 1w ago

Description

Incomplete WebAssembly exception handing could have led to a use-after-free. This vulnerability affects Firefox < 129, Firefox ESR < 115.14, Firefox ESR < 128.1, Thunderbird < 128.1, and Thunderbird < 115.14.

CVSS Details

Base Score
8.8
Exploitability
2.8
Impact
5.9
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction Required
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
43.4% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-755

Affected Products 5

VendorProductVersionRange
mozillafirefox* <129.0
mozillafirefox_esr* <115.14.0
mozillafirefox_esr128.0any
mozillathunderbird* <115.14.0
mozillathunderbird128.0.1any

References 6

  • bugzilla.mozilla.org https://bugzilla.mozilla.org/show_bug.cgi?id=1904644
    Issue TrackingPermissions Required
  • mozilla.org https://www.mozilla.org/security/advisories/mfsa2024-33/
    Vendor Advisory
  • mozilla.org https://www.mozilla.org/security/advisories/mfsa2024-34/
    Vendor Advisory
  • mozilla.org https://www.mozilla.org/security/advisories/mfsa2024-35/
    Vendor Advisory
  • mozilla.org https://www.mozilla.org/security/advisories/mfsa2024-37/
    Vendor Advisory
  • mozilla.org https://www.mozilla.org/security/advisories/mfsa2024-38/
    Vendor Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.