CVE-2025-8880Network attack vector

Sandboxed code execution via V8 race

Published Aug 13, 2025 · Updated Feb 26, 2026

Race condition in V8 in Google Chrome before 139.0.7258.127 allows remote attackers to execute code in the sandbox via a crafted HTML page. Google identifies the affected locus only as V8 and keeps the underlying issue details restricted, so the racing operations and corrupted state are undisclosed. A target must load the attacker-controlled page; the published impact is code execution inside Chrome's sandbox, not a documented sandbox escape.

CVSS severity8.8
High
EPSS probability0.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Race condition in V8 in Google Chrome before 139.0.7258.127 allows remote attackers to execute code in the sandbox via a crafted HTML page. Google identifies the affected locus only as V8 and keeps the underlying issue details restricted, so the racing operations and corrupted state are undisclosed. A target must load the attacker-controlled page; the published impact is code execution inside Chrome's sandbox, not a documented sandbox escape.

The record

CVE
CVE-2025-8880
Published
Aug 13, 2025
Updated
Feb 26, 2026
Vendor
Google Cloud
Product
Google Chrome
Classifications
CWE-362, T1189
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 13, 2025CVE publishedPublication date reported by the CVE source.
  2. Feb 26, 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?

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

  1. Affected versionversion=139.0.7258.127 <139.0.7258.127

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Google Cloud · Google Chromeversion=139.0.7258.127 <139.0.7258.127

Published CVSS scores

8.8UbuntuCVSS: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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-362Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
T1189Drive-by Compromise

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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