CVE-2023-6856 - CVE House
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Status published Unknown CVE-2023-6856

The WebGL `DrawElementsInstanced` method was susceptible to a heap buffer...

Vulnerability Description

The WebGL `DrawElementsInstanced` method was susceptible to a heap buffer overflow when used on systems with the Mesa VM driver. This issue could allow an attacker to perform remote code execution and sandbox escape. This vulnerability affects Firefox ESR < 115.6, Thunderbird < 115.6, and Firefox < 121.

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

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • DoHyun Lee

References

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Affected Vendor

Affected Software

Firefox ESR, Thunderbird, Firefox
Vulnerable Versions:
unspecified

Timeline

Official Publish: December 19th, 2023
Last Modified: February 13th, 2025
Added to House: July 22nd, 2026

CVSS Vectors

No vector data available

Weaknesses (CWE)

No CWE data available

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.