High severity · published Aug 6, 2024
CVE-2024-7521
Incomplete WebAssembly exception handing could have led to a use-after-free
8.8
CVSS
0.6%
EPSS
No
On KEV
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 vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.6% · higher than 49% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FI
Firefox · Mozilla
before 129.0 · source: NVD
FE
Firefox Esr · Mozilla
before 115.14.0; 128.0 · source: NVD
TH
Thunderbird · Mozilla
before 115.14.0; 128.0.1 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2024-7521
CVE.org
https://www.cve.org/CVERecord?id=CVE-2024-7521
Issue Tracking
https://bugzilla.mozilla.org/show_bug.cgi?id=1904644
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2024-33/
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2024-34/
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2024-35/
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2024-37/
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2024-38/
More from Firefox
10.0
CVE-2019-11708
Mozilla Firefox and Thunderbird Sandbox Escape Vulnerability
9.8
CVE-2024-9680
Mozilla Firefox Use-After-Free Vulnerability
9.8
CVE-2010-3765
Mozilla Multiple Products Remote Code Execution Vulnerability
9.6
CVE-2022-26486
Mozilla Firefox Use-After-Free Vulnerability
8.8
CVE-2023-5217
Google Chromium libvpx Heap Buffer Overflow Vulnerability