CVE-2025-12439: chrome Weak Crypto — Exploit & Fix

Description

Inappropriate implementation in App-Bound Encryption in Google Chrome on Windows prior to 142.0.7444.59 allowed a local attacker to obtain potentially sensitive information from process memory via a malicious file. (Chromium security severity: Medium)

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CVSS v3.1 Score

5.5

MEDIUM

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

Weakness Type (CWE)

CWE-326 CWE-326

Affected Products

Vendor	Product	Versions
google	chrome	< 142.0.7444.59
microsoft	windows	All

References

Advisories & Patches

https://chromereleases.googleblog.com/2025/10/stable-channel-update-for-desktop_28.html

Exploits

https://issues.chromium.org/issues/382234536

Frequently Asked Questions

What is CVE-2025-12439? +

Inappropriate implementation in App-Bound Encryption in Google Chrome on Windows prior to 142.0.7444.59 allowed a local attacker to obtain potentially sensitive information from process memory via a malicious file. (Chromium security severity: Medium) It has a CVSS v3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2025-12439? +

CVE-2025-12439 has a CVSS v3.1 score of 5.5 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2025-12439? +

CVE-2025-12439 affects products from google, microsoft, specifically: chrome, windows. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-12439? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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