HIGH 8.8 Microsoft

CVE-2023-6858

Firefox was susceptible to a heap buffer overflow in `nsTextFragment` due to insufficient OOM handling. This vulnerability affects Firefox ESR < 115.6, Thunderbird < 115.6, and Firefox < 121.

Microsoft Security Update 2023-Dec: Firefox was susceptible to a heap buffer overflow in `nsTextFragment` due to insufficient OOM handling. This vulnerability affects Firefox ESR < 115.6, Thunderbird < 115.6, and Firefox < 121.

Affected Products

azl3 mozjs 102.15.1-1 on Azure Linux 3.0

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-6858
https://nvd.nist.gov/vuln/detail/CVE-2023-6858

Published: 2023-12-12 · Source: Microsoft · Feed updated: 2026-09-03

This high severity vulnerability with a CVSS score of 8.8 was published on 2023-12-12 via Microsoft. Affected: azl3 mozjs 102.15.1-1 on Azure Linux 3.0.

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