CVE-2024-7520
HIGH
8.8
CVSS Score
Published: August 6, 2024 at 12:38 PM UTC
Updated: June 17, 2026 at 08:20 AM UTC
3 products affected across 1 vendorFirefoxThunderbirdFirefox ESR
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Severity
HIGH8.8
Exploit prediction
EPSS 0.6%
SSVC
No known exploit
Description
A type confusion bug in WebAssembly could be leveraged by an attacker to potentially achieve code execution. This vulnerability affects Firefox < 129, Firefox ESR < 128.1, and Thunderbird < 128.1.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
v < 129
Affected range stops below 129, so it looks safe — our inference, not a vendor statement
Affected range stops below 129.0, so it looks safe — our inference, not a vendor statement
v < 128.1
Affected range stops below 128.1, so it looks safe — our inference, not a vendor statement
Affected range stops below 128.1.0, so it looks safe — our inference, not a vendor statement
v < 128.1
Affected range stops below 128.1, so it looks safe — our inference, not a vendor statement
Affected range stops below 128.1.0, so it looks safe — our inference, not a vendor statement
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
References (4)
Issue TrackingPermissions Required
Source: [email protected]
https://bugzilla.mozilla.org/show_bug.cgi?id=1903041SSVC — Action Prioritization
SSVCNo known exploitNot automatableTotal impact
SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.
CVSS
8.8HIGHCISA-ADP
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- REQUIRED
- Scope
- UNCHANGED
- Confidentiality
- HIGH
- Integrity
- HIGH
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-843CWE-94
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