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Report · Reddit InfoSec NewsAbout CVE-2025-10585Published

CVE-2025-10585 is the sixth actively exploited Chrome zero-day patched by Google in 2025

Affects Google Chromium V8Source Reddit InfoSec News

0
Authoritative record:CVE-2025-10585· High 8.8

Exploited in the wild · KEV due 14 Oct 2025 · 8% EPSS : upgrade to 140.0.7339.185 now.

Data as of 27 Oct 2026, 17:11 UTC

CVSS 3.1 base score
8.8High
How severe the flaw is on the 0–10 CVSS scale.
KEV deadline
 US federal agencies must patch by this date; a sensible deadline for everyone else. Other KEV due dates
EPSS
8.9% chance of exploitation in 30 days – higher than 95% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 140.0.7339.185
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Exploitation evidence

t = 0 is the CVE’s publication on cve.org

  1. Disclosed: evidence found.

    CVE published 24 Sep 2025

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: evidence found.

    Listed in CISA KEV 1 day before disclosure

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

Timeline

  1. , 1 day before disclosure

  2. CVE published

    on cve.org

    , t = 0

  3. KEV remediation due

    US federal deadline

    , 20 days after disclosure

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), CISA KEV (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

What to do

Upgrade Chrome to 140.0.7339.185.

Affected software

ProductAffectedFixed in
GoogleChromeAffected
  • >=140.0.7339.185 <140.0.7339.185
Fixed in
  • 140.0.7339.185

Description

CVE-2025-10585 is a critical zero-day vulnerability in the Google Chrome browser's V8 JavaScript and WebAssembly engine, involving a type confusion flaw. This vulnerability has been actively exploited in the wild in 2025 and was discovered by Google's Threat Analysis Group. It allows attackers to corrupt memory, potentially leading to arbitrary code execution, unauthorized access, or service disruption. Google has released patches in Chrome version 140.0.7339.185/.186 and later to address this and other zero-day vulnerabilities. The vulnerability is part of a series of actively exploited Chrome zero-days in 2025. Immediate patching is strongly recommended to mitigate the risk. The vulnerability poses a critical threat due to its active exploitation and potential impact on user security. There is no detailed public technical information about the exploit methods or affected Chrome versions prior to the patch. No specific countries are confirmed as targeted, though European countries with heavy Chrome usage were noted as at elevated risk.

References

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