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CVE WatchJul 21, 2026

CVE-2026-16359

Incorrect boundary conditions in the Audio/Video: GMP component. This vulnerability was fixed in Firefox 153, Firefox ESR 115.38, and Firefo

CVSS

9.1

Critical

EPSS

—

KEV

—

Exploit Today

0

0-100

Published: Jul 21, 2026 · Last modified: Jul 21, 2026 · CWE-119

EPSS · 30d

Not enough EPSS history yet.

Technical description

Incorrect boundary conditions in the Audio/Video: GMP component. This vulnerability was fixed in Firefox 153, Firefox ESR 115.38, and Firefox ESR 140.13.

Official references
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CVECVSSEPSSKEVRExploitTitleMod.
CVE-2026-164129.8 CRI
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——0Memory safety bugs present in Firefox ESR 140.12 and Firefox 152. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 153 and Firefox ESR 140.13.26mCVE-2026-164119.8 CRI
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——0Memory safety bugs present in Firefox 152. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 153.26mCVE-2026-163619.8 CRI
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——0Memory safety bugs present in Firefox ESR 115.37 and Firefox ESR 140.12. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox ESR 115.38 and Firefox ESR 140.13.1hCVE-2026-162488.8 HIG
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