DaystoPatch

GoogleExploited incident

Google Chromium V8 Type Confusion Vulnerability

CVE-2025-10585High, CVSS 8.8In CISA's Known Exploited Vulnerabilities catalog since 23 Sep 2025

Automated timeline. Not yet checked by a researcher, so it doesn't count toward any grade.

FixedFixed for every supported version on the day it became public.

Response

Silence
0h
First public report to first vendor statement
Exposure
0h
First public report to first fixUnverified source
Follow-through
0h
First public report to a fix for every supported versionUnverified source
  • Vendor silent
  • Vendor statement, no fix
  • Fixed for some versions
  • Fixed when disclosed
  • Date only, no time of day

Timeline and evidence

Open a moment to see its source and archived quote.

  1. First public report

    Google advisory chrome-5889235098647486089/CVE-2025-10585ClaimedQuote verified

    The Stable channel has been updated to 140.0.7339.185/.186 for Windows/Mac, and 140.0.7339.185 for Linux which will roll out over the coming days/weeks. A full list of changes in this build is

    The vendor's own disclosure.

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    4 more sources for this moment
    Bluesky postClaimedQuote not checked yet17 Sep 2025, 23:21 UTC

    This release includes upstream security fixes for several CVEs, including CVE-2025-10585. Google is aware of an exploit for CVE-2025-10585 that exists in the wild.

    Earliest third-party post we hold.

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    Bluesky post social
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    Mastodon postClaimedQuote not checked yet18 Sep 2025, 07:44 UTC

    before you even knew it was happening. Are you up to date? https:// thedefendopsdiaries.com/chrome s-sixth-zero-day-of-2025-cve-2025-10585-highlights-ongoing-security-challenges/ # chromezeroday # cve202510585 # browsersecurity # cybersecuritytrends # patchmanagement

    Earliest third-party post we hold.

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    Mastodon post social
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    CISA KEV (CVE-2025-10585)ClaimedQuote verified23 Sep 2025

    Google Chromium V8 Type Confusion Vulnerability

    Added to CISA's KEV catalog on 2025-09-23.

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    CVE.org record CVE-2025-10585ClaimedQuote verified24 Sep 2025, 16:17 UTC

    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)

    CVE record published.

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  2. Vendor statement

    at disclosure

    Google advisory chrome-5889235098647486089/CVE-2025-10585ClaimedQuote verified

    The Stable channel has been updated to 140.0.7339.185/.186 for Windows/Mac, and 140.0.7339.185 for Linux which will roll out over the coming days/weeks. A full list of changes in this build is

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    1 more source for this moment
    Google advisory chrome-811289162989664502ClaimedQuote verified18 Sep 2025, 22:47 UTC

    The ChromeOS Stable channel is being updated to OS version 16371.49.0 (Browser version 140.0.7339.201 ) for most ChromeOS devices.

    From the advisory's revision history.

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  3. First workaround

    No official mitigation found yet.

  4. First fix

    at disclosureUnverified: quote not found in the archived copy

    Google advisory chrome-5889235098647486089/CVE-2025-10585ClaimedQuote not found in archive

    The Stable channel has been updated to 140.0.7339.185/.186 for Windows/Mac, and 140.0.7339.185 for Linux which will roll out over the coming days/weeks.

    Stable Channel Update for Desktop: build fixing the listed CVEs (one candidate per channel/platform)

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    1 more source for this moment
    Google advisory chrome-811289162989664502ClaimedQuote verified18 Sep 2025, 22:47 UTC

    The ChromeOS Stable channel is being updated to OS version 16371.49.0 (Browser version 140.0.7339.201 ) for most ChromeOS devices.

    Stable Channel Update for ChromeOS / ChromeOS Flex: build fixing the listed CVEs (one candidate per channel/platform)

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  5. Fixed for all versions

    at disclosureUnverified: derived by rule, not read from a source

    Google advisory chrome-5889235098647486089/CVE-2025-10585Inferred

    The Stable channel has been updated to 140.0.7339.185/.186 for Windows/Mac, and 140.0.7339.185 for Linux which will roll out over the coming days/weeks. A full list of changes in this build is

    Patch-day rule: Google ships fixes in the advisory that discloses a bug, and this advisory states that fixed versions exist. So the vendor statement, first fix and fix for all versions all take the advisory's publication time.

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Send this to your boss

No brief for this incident yet. We write one for every open incident and every critical bug exploited before a fix.

Affected products

  • Chromium V8
  • Chrome

Related

Google report card