CVE-2026-92005

Invalid memory access via Web Codecs use-after-free

Published Sep 15, 2026 · Updated Sep 15, 2026

Use-after-free in Mozilla Firefox and Firefox ESR Web Codecs allows attackers to access freed memory via unspecified vectors. The advisory source identifies the Audio/Video: Web Codecs component but does not disclose which object is released prematurely or which later operation dereferences it. The required attacker position, trigger conditions, and consequence beyond invalid memory access remain undisclosed.

CVSS severityUnavailable
Unscored
EPSS probability0.16%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use-after-free in Mozilla Firefox and Firefox ESR Web Codecs allows attackers to access freed memory via unspecified vectors. The advisory source identifies the Audio/Video: Web Codecs component but does not disclose which object is released prematurely or which later operation dereferences it. The required attacker position, trigger conditions, and consequence beyond invalid memory access remain undisclosed.

The record

CVE
CVE-2026-92005
Published
Sep 15, 2026
Updated
Sep 15, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
Unavailable
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Sep 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 15, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorUnavailable in this record.
Required privilegesUnavailable in this record.

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

No CVSS assessment is available in this record.

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
VectorUnavailable
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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