Unspecified impact via undisclosed memory corruption
Published Sep 1, 2026 · Updated Sep 3, 2026
Memory corruption in Mozilla Thunderbird 154, ESR 153.1, and ESR 140.14 allows remote attackers to cause unspecified impact via network input. Mozilla groups multiple internally found defects under this identifier but does not disclose their components or the operations that mishandle input. No authentication or user interaction is required according to CISA’s assessment, although ordinary email reading generally does not expose the defects because scripting is disabled.
Summary
What happened
Memory corruption in Mozilla Thunderbird 154, ESR 153.1, and ESR 140.14 allows remote attackers to cause unspecified impact via network input. Mozilla groups multiple internally found defects under this identifier but does not disclose their components or the operations that mishandle input. No authentication or user interaction is required according to CISA’s assessment, although ordinary email reading generally does not expose the defects because scripting is disabled.
The record
- CVE
- CVE-2026-84143
- Published
- Sep 1, 2026
- Updated
- Sep 3, 2026
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-200
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Sep 1, 2026CVE publishedPublication date reported by the CVE source.
- Sep 3, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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What is affected?
Affected products and versions are unavailable in this record.
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
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Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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