CVE-2024-7521 : Incomplete WebAssembly exception handing could have led to a use-after-free. Thi

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.

Published 2024-08-06 13:15:57

Updated 2024-08-12 16:05:11

Source Mozilla Corporation

View at NVD, CVE.org

Vulnerability category: Memory Corruption

Products affected by CVE-2024-7521

Mozilla » Firefox
Versions before (<) 129.0
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
Matching versions
Mozilla » Thunderbird
Versions before (<) 115.14.0
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*
Matching versions
Mozilla » Thunderbird » Version: 128.0.1
cpe:2.3:a:mozilla:thunderbird:128.0.1:*:*:*:*:*:*:*
Matching versions
Mozilla » Firefox Esr
Versions before (<) 115.14.0
cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*
Matching versions
Mozilla » Firefox Esr » Version: 128.0
cpe:2.3:a:mozilla:firefox_esr:128.0:*:*:*:*:*:*:*
Matching versions

Exploit prediction scoring system (EPSS) score for CVE-2024-7521

EPSS FAQ

0.38%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 58 %

Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2024-7521

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source	First Seen
9.8	CRITICAL	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	3.9	5.9	134c704f-9b21-4f2e-91b3-4a467353bcc0	2024-08-06
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: High Integrity: High Availability: High
8.8	HIGH	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H	2.8	5.9	NIST	2024-08-12
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: Required Scope: Unchanged Confidentiality: High Integrity: High Availability: High

CWE ids for CVE-2024-7521

CWE-755 Improper Handling of Exceptional Conditions

The product does not handle or incorrectly handles an exceptional condition.
Assigned by:
- 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)
- nvd@nist.gov (Primary)

References for CVE-2024-7521

https://www.mozilla.org/security/advisories/mfsa2024-37/

Security Vulnerabilities fixed in Thunderbird 128.1 — Mozilla
Vendor Advisory

CVEs referencing this url
https://www.mozilla.org/security/advisories/mfsa2024-38/

Security Vulnerabilities fixed in Thunderbird 115.14 — Mozilla
Vendor Advisory

CVEs referencing this url
https://www.mozilla.org/security/advisories/mfsa2024-35/

Security Vulnerabilities fixed in Firefox ESR 128.1 — Mozilla
Vendor Advisory

CVEs referencing this url
https://bugzilla.mozilla.org/show_bug.cgi?id=1904644

Access Denied
Issue Tracking;Permissions Required
https://www.mozilla.org/security/advisories/mfsa2024-34/

Security Vulnerabilities fixed in Firefox ESR 115.14 — Mozilla
Vendor Advisory

CVEs referencing this url
https://www.mozilla.org/security/advisories/mfsa2024-33/

Security Vulnerabilities fixed in Firefox 129 — Mozilla
Vendor Advisory

CVEs referencing this url

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Vulnerability Details : CVE-2024-7521

Products affected by CVE-2024-7521

Exploit prediction scoring system (EPSS) score for CVE-2024-7521

CVSS scores for CVE-2024-7521

CWE ids for CVE-2024-7521

References for CVE-2024-7521