Arbitrary code execution via memory corruption
Published Jul 9, 2024 · Updated Oct 30, 2025
Memory corruption in Mozilla Firefox and Thunderbird before 128 allows remote attackers to execute arbitrary code through malicious content. Mozilla groups three memory-safety defects under this CVE but has not disclosed the affected functions or faulty operations beyond evidence of memory corruption. Successful exploitation requires user interaction with attacker-controlled content; scripting disabled during ordinary Thunderbird email reading generally prevents that route.
Summary
What happened
Memory corruption in Mozilla Firefox and Thunderbird before 128 allows remote attackers to execute arbitrary code through malicious content. Mozilla groups three memory-safety defects under this CVE but has not disclosed the affected functions or faulty operations beyond evidence of memory corruption. Successful exploitation requires user interaction with attacker-controlled content; scripting disabled during ordinary Thunderbird email reading generally prevents that route.
The record
- CVE
- CVE-2024-6615
- Published
- Jul 9, 2024
- Updated
- Oct 30, 2025
- Vendor
- Mozilla
- Product
- Firefox
- Classifications
- CWE-787, T1203
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jul 9, 2024CVE publishedPublication date reported by the CVE source.
- Oct 30, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=0 <128
- Affected versionversion=unspecified <128
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Public exploit references
No public exploit references are available in this record.
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
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Your stack
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