CVE-2025-0445Network attack vector

Heap corruption via V8 use-after-free

Published Feb 4, 2025 · Updated Feb 7, 2025

Use-after-free in V8 in Google Chrome before 133.0.6943.53 allows remote attackers to trigger heap corruption via crafted HTML. Chrome identifies the locus only as V8; the restricted issue does not disclose which object is freed or which later operation dereferences it. A user must load attacker-controlled content, and the published record bounds the result to potential heap corruption rather than confirmed sandbox escape or code execution.

CVSS severity5.4
Medium
EPSS probability0.39%
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 V8 in Google Chrome before 133.0.6943.53 allows remote attackers to trigger heap corruption via crafted HTML. Chrome identifies the locus only as V8; the restricted issue does not disclose which object is freed or which later operation dereferences it. A user must load attacker-controlled content, and the published record bounds the result to potential heap corruption rather than confirmed sandbox escape or code execution.

The record

CVE
CVE-2025-0445
Published
Feb 4, 2025
Updated
Feb 7, 2025
Vendor
Google Cloud
Product
Google Chrome
Classifications
CWE-416, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 4, 2025CVE publishedPublication date reported by the CVE source.
  2. Feb 7, 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=133.0.6943.53 <133.0.6943.53

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Google Cloud · Google Chromeversion=133.0.6943.53 <133.0.6943.53

Published CVSS scores

5.4GitHub Advisory DatabaseCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

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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