CVE-2025-0434Network attack vector

Heap corruption via V8 out-of-bounds access

Published Jan 15, 2025 · Updated Mar 14, 2025

Out-of-bounds memory access in V8 in Google Chrome before 132.0.6834.83 allows remote attackers to corrupt heap memory via crafted HTML. Google identifies V8 as the locus but keeps the technical issue restricted, so the exact operation that crosses the memory boundary is undisclosed. The required gate is a user loading attacker-controlled HTML; successful exploitation corrupts heap memory within Chrome's sandbox.

CVSS severity8.8
High
EPSS probability5.91%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds memory access in V8 in Google Chrome before 132.0.6834.83 allows remote attackers to corrupt heap memory via crafted HTML. Google identifies V8 as the locus but keeps the technical issue restricted, so the exact operation that crosses the memory boundary is undisclosed. The required gate is a user loading attacker-controlled HTML; successful exploitation corrupts heap memory within Chrome's sandbox.

The record

CVE
CVE-2025-0434
Published
Jan 15, 2025
Updated
Mar 14, 2025
Vendor
Google Cloud
Product
Google Chrome
Classifications
CWE-122, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 15, 2025CVE publishedPublication date reported by the CVE source.
  2. Mar 14, 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=132.0.6834.83 <132.0.6834.83

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Google Cloud · Google Chromeversion=132.0.6834.83 <132.0.6834.83

Published CVSS scores

8.8CISA ADP VulnrichmentCVSS: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-122Heap-based Buffer Overflow
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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