CVE-2025-12431Network attack vector

Navigation bypass via unconditional download resumption

Published Nov 10, 2025 · Updated Nov 12, 2025

Access control bypass in Extensions in Google Chrome before 142.0.7444.59 allows remote attackers to bypass navigation restrictions. The downloads API resume path treats paused downloads as resumable and returns true without performing the intended canResume check. Exploitation requires a user to install a crafted extension; the public record does not explain how the faulty resume decision crosses navigation controls.

CVSS severity6.5
Medium
EPSS probability0.19%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Access control bypass in Extensions in Google Chrome before 142.0.7444.59 allows remote attackers to bypass navigation restrictions. The downloads API resume path treats paused downloads as resumable and returns true without performing the intended canResume check. Exploitation requires a user to install a crafted extension; the public record does not explain how the faulty resume decision crosses navigation controls.

The record

CVE
CVE-2025-12431
Published
Nov 10, 2025
Updated
Nov 12, 2025
Vendor
Google Cloud
Product
Google Chrome
Classifications
CWE-288, T1176
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 10, 2025CVE publishedPublication date reported by the CVE source.
  2. Nov 12, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=142.0.7444.59 <142.0.7444.59

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Google Cloud · Google Chromeversion=142.0.7444.59 <142.0.7444.59

Published CVSS scores

6.5UbuntuCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
6.5OSVCVSS:3.1/AV:N/AC:L/PR:N/UI:N/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-288Authentication Bypass Using an Alternate Path or Channel
T1176Browser Extensions

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

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo