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Status published
High
CVE-2019-11759
An attacker could have caused 4 bytes of HMAC output...
Vulnerability Description
An attacker could have caused 4 bytes of HMAC output to be written past the end of a buffer stored on the stack. This could be used by an attacker to execute arbitrary code or more likely lead to a crash. This vulnerability affects Firefox < 70, Thunderbird < 68.2, and Firefox ESR < 68.2.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
No credits recorded in the NVD database.
References
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CVE-2025-9183
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Affected Vendor
Mozilla
View all reports →Affected Software
Firefox, Thunderbird, Firefox ESR
Vulnerable Versions:
before 70, before 68.2
Timeline
Official Publish:
January 8th, 2020
Last Modified:
August 4th, 2024
Added to House:
July 20th, 2026
CVSS Vectors
V3:
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weaknesses (CWE)
No CWE data available
MITRE ATT&CK TTPs
No associated TTPs found for this vulnerability.