Exploited CVEs / Google / CVE-2025-10585

CVE-2025-10585

Google Chromium V8 Type Confusion Vulnerability. Exploitation in the wild is confirmed by CISA, not predicted. Federal agencies were required to remediate by 2025-10-14 (that deadline has passed); treat that date as the outer bound for your own environment. The fix is in the vendor advisory: Chrome Releases (security updates), linked below.

CriticalCISA KEV

Actively exploited Google Chromium V8 vulnerability, Critical severity, CVSS 9.8. Added to the CISA KEV catalog 2025-09-23.

Senserva AI read on CVE-2025-10585CISA required actionOfficial fix for CVE-2025-10585Admin questions

Risk summary

CVSS base
9.8
EPSS exploit probability
5.4%
Severity
Critical
Added to KEV
2025-09-23
CISA due date
2025-10-14 (past due)
Patch now
Exploited in the wild: confirmed by the CISA KEV catalog, not predicted.
The fix ships from the vendor: Chrome Releases (security updates).
Do this now: Federal remediation deadline 2025-10-14; treat it as your outer bound. Patch now and verify deployment on every exposed device.

Updated July 26, 2026. Data refreshed on every build from MSRC, CISA KEV, and FIRST EPSS.

Senserva AI Opinion for CVE-2025-10585

One of the rare browser bugs rated Critical Severity (CVSS 9.8), this V8 type confusion was exploited in the wild before its September 23, 2025 CISA KEV entry. The elevated score signals impact beyond a routine renderer compromise, and V8 zero-days are typically burned on high-value targets first before spreading to broader campaigns. All Chromium-based browsers, including Edge, carry the flaw until patched.

Do this: Confirm every Chrome and Edge install is past its September 2025 security release, and check browser versions on VDI images that get rebuilt from stale templates.

AI-generated from public data, 2026-07-07. Verify against the vendor advisory before acting.

Senserva AI Opinion and rich prompt for CVE-2025-10585

Copy this prompt into Claude, ChatGPT, or Copilot. The facts are included, sourced from this page.

Full tracking and change history for CVE-2025-10585

Published
2025-09-19
Last revised
2025-09-19
Changes tracked
1

Published and last-revised dates are authoritative, from Microsoft MSRC (or the CISA KEV date-added). Senserva additionally records day-to-day changes from 2026-07-07, refreshed several times a day; the change count reflects that forward-only tracking.

CISA required action

Federal (BOD 22-01) remediation due date: 2025-10-14 (past due).

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

Official fix for CVE-2025-10585

The authoritative fix and affected-version list are published by the vendor. Find the Chromium V8 advisory on Chrome Releases (security updates).

Common questions about CVE-2025-10585

Is CVE-2025-10585 actively exploited?

Yes. CVE-2025-10585 was added to the CISA Known Exploited Vulnerabilities (KEV) catalog on 2025-09-23, which means exploitation in the wild has been confirmed, not predicted. Its EPSS 30-day exploitation probability is 5.4%.

What is the CISA deadline and required action for CVE-2025-10585?

CISA set the federal (BOD 22-01) remediation due date at 2025-10-14, which has passed; treat any unremediated system as overdue. The verbatim 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.

What fixes CVE-2025-10585?

The authoritative fix is in the vendor advisory: see Chrome Releases (security updates) for the patched Chromium V8 versions and any workarounds. KEV listing makes this a fix-first item: patch it ahead of higher-CVSS issues nobody is exploiting.

Can I ask my own AI about CVE-2025-10585?

Yes. This page includes a free, ready-to-paste AI prompt containing CVE-2025-10585's key facts: severity, CVSS, EPSS, the KEV date, the CISA due date, and the required action. Copy it into Claude, ChatGPT, or Copilot; the data is refreshed twice a day (5 AM and 3 PM US Central).

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Lexicon: the terms on this page
CVE
Common Vulnerabilities and Exposures. A unique ID for one publicly known vulnerability, such as CVE-2025-1234.
KB
Microsoft Knowledge Base article. The identifier for a specific Microsoft update.
KEV
CISA Known Exploited Vulnerabilities. CVEs confirmed exploited in the wild. Fix these first.
CVSS
Common Vulnerability Scoring System. A standardized Severity score from 0 to 10.
EPSS
Exploit Prediction Scoring System. The probability a CVE will be exploited in the next 30 days.
MSRC
Microsoft Security Response Center. Microsoft's Patch Tuesday advisories and KB-to-CVE mapping.
NVD
National Vulnerability Database (NIST). Authoritative CVE metadata and CVSS scores.
Ransomware
The vulnerability is linked to known ransomware activity.
Reference: Microsoft CVE and vulnerability management, the full CVE-to-patch lookup ranked by real-world risk, and the Microsoft patching guide, how Intune, Windows Autopatch, Defender, and Azure Update Manager fit together.
Data notice: this page, the feeds, and the API are provided as is, for informational purposes only, without warranty of any kind. Senserva, LLC does not guarantee the accuracy, completeness, or timeliness of third-party data (MSRC, NVD, CISA KEV, EPSS) and accepts no liability for actions taken based on it; verify against the authoritative vendor advisory before acting. Built daily with Senserva Trustworthy AI. All use of this data is subject to the Senserva EULA.