CVE-2023-6704Network attack vector

Heap corruption via libavif use-after-free

Published Dec 14, 2023 · Updated Feb 13, 2025

Use-after-free in libavif in Google Chrome before 120.0.6099.109 allows remote attackers to corrupt heap memory via a crafted image. Google identifies libavif as the affected component but has not disclosed the object-lifetime error or call path that leaves freed memory reachable. User interaction is required to render the image, and the documented outcome is heap corruption rather than guaranteed process takeover.

CVSS severity8.8
High
EPSS probability0.66%
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 libavif in Google Chrome before 120.0.6099.109 allows remote attackers to corrupt heap memory via a crafted image. Google identifies libavif as the affected component but has not disclosed the object-lifetime error or call path that leaves freed memory reachable. User interaction is required to render the image, and the documented outcome is heap corruption rather than guaranteed process takeover.

The record

CVE
CVE-2023-6704
Published
Dec 14, 2023
Updated
Feb 13, 2025
Vendor
Google Cloud
Product
Google Chrome
Classifications
CWE-416, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 14, 2023CVE publishedPublication date reported by the CVE source.
  2. Feb 13, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=120.0.6099.109 <120.0.6099.109

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Google Cloud · Google Chromeversion=120.0.6099.109 <120.0.6099.109

Published CVSS scores

8.8NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-416Use After Free
T1203Exploitation for Client Execution

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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