CVE WatchOct 23, 2026

CVE-2023-4050

In some cases, an untrusted input stream was copied to a stack buffer without checking its size. This resulted in a potentially exploitable

CVSS

7.5

High

EPSS

12.6%

p96

KEV

—

Exploit Today

0-100

Published: Aug 1, 2023 · Last modified: Oct 23, 2026 · CWE-787

EPSS · 30d

12.6%EPSS · 30 days12.6%

2026-09-282026-10-25

Technical description

In some cases, an untrusted input stream was copied to a stack buffer without checking its size. This resulted in a potentially exploitable crash which could have led to a sandbox escape. This vulnerability affects Firefox < 116, Firefox ESR < 102.14, and Firefox ESR < 115.1.

Official references

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