What is CVE-2025-10585?

CVE-2025-10585 is a critical-severity vulnerability in Apple macOS, classified under Access of Resource Using Incompatible Type (Type Confusion). CVSS score: 9.8/10. Published 2025-09-24.

How severe is CVE-2025-10585?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2025-10585 known to be exploited?

Yes. CVE-2025-10585 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2025-09-23), indicating it is being actively exploited. 15 public proof-of-concept repositories are indexed.

Vulnerability in Apple macOS

CVE-2025-10585

Type confusion in V8 in Google Chrome prior to 140.0.7339.185 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: High)

Published 2025-09-24 · last modified 2026-07-14.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.054 (92.6th percentile), scored 2026-10-19.

Low probability of exploitation in the next 30 days, but still tracked. 93rd percentile — 92.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.054 · newest: 0.054 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-843 — Access of Resource Using Incompatible Type (Type Confusion)

CISA KEV (Known Exploited Vulnerabilities)

This CVE is on the CISA KEV catalog, added on 2025-09-23. CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.

BOD 22-01 due date: 2025-10-14.

Required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Public proof-of-concept exploits

References

chromereleases.googleblog.com/2025/09/stable-channel-update-for-desktop_17.html (Release Notes, Vendor Advisory)
issues.chromium.org/issues/445380761 (Permissions Required, Issue Tracking)
134c704f-9b21-4f2e-91b3-4a467353bcc0 (US Government Resource)
0b142b55-0307-4c5a-b3c9-f314f3fb7c5e (Third Party Advisory)

Frequently asked questions

What is CVE-2025-10585?: CVE-2025-10585 is a critical-severity vulnerability in Apple macOS, classified under Access of Resource Using Incompatible Type (Type Confusion). CVSS score: 9.8/10. Published 2025-09-24.
How severe is CVE-2025-10585?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2025-10585 known to be exploited?: Yes. CVE-2025-10585 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2025-09-23), indicating it is being actively exploited. 15 public proof-of-concept repositories are indexed.