Skip to main content
Apexward Pulse
Type Vulnerability

Dangerous Type · Parser conflict

Google Chromium V8 Type Confusion Vulnerability

1 sourceCVE-2025-10585

At a glance

Medium
7-day window, from the last update
ActiveConfirmed in-the-wild exploitation
Evidence-weighted, not popularity
Signal

Actively exploited in the wild — prioritise confirming exposure.

Why Medium

Medium rather than High: exposure is scored at a default because we cannot see your systems or suppliers. If you run or depend on Google Chromium V8, treat it as High.

Briefing

There is no written leader briefing for this story yet. These questions come from the facts we hold.

Questions to ask IT

  • Do we run Google Chromium V8, and is every instance on version 140.0.7339.185 or later?
  • Is any of it reachable from the internet?
  • Have we checked whether it has already been used against us?
  • If it is not yet patched, what mitigation is in place, and will the fix be done by 11 Nov?

Next steps

  1. Confirm exposure, mitigation status and any service interruption risk.

Summary

  • Google Chromium contains a type confusion vulnerability in the V8 JavaScript and WebAssembly engine.
  • CVE-2025-10585 is listed in known-exploited catalogue (exploitation in the wild)
  • CVE-2025-10585 has estimated attack likelihood 0.0543 (~5.4% estimated chance of exploitation in 30 days; 91.9th percentile) as of 2026-07-31 — probability signal, not confirmed exploitation
  • Authoritative catalogues report active exploitation of this vulnerability.

Why this matters in the UK

  • Known-exploited catalogue reports exploitation in the wild

Products and services involved

3 reports

Part of Google Chromium V8 Type Confusion Vulnerability

Pulse

Last checked 53m ago · Next recheck 10 Nov 2026, 04:06 UK time · 2 quiet checks collapsed

Update
4 Nov 2026, 23:34 UK time · 4d ago

Suggested changed to 7d.

Listed on the — prioritise confirming exposure and patching.

EscalationDe-escalationCritical / liveWhat these mean
Drag to pan · Ctrl / ⌘ + scroll or pinch to zoom8 events

2 quiet checks hidden.

Sources

How we know

Statements extracted from sources. Higher confidence means stronger corroboration.

  • ConfirmedHeadline90% confidence

    Google Chromium V8 Type Confusion Vulnerability

  • ConfirmedSummary fact75% confidence

    Google Chromium contains a type confusion vulnerability in the V8 JavaScript and WebAssembly engine. Affects Google Chromium V8. Known ransomware campaign use: Unknown. 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.

  • ConfirmedCVE identifier95% confidence

    Event involves CVE-2025-10585

  • ConfirmedKnown-exploited catalogue98% confidence

    CVE-2025-10585 is listed in known-exploited catalogue (exploitation in the wild)

  • ConfirmedEstimated attack likelihood95% confidence

    CVE-2025-10585 has estimated attack likelihood 0.0543 (~5.4% estimated chance of exploitation in 30 days; 91.9th percentile) as of 2026-07-31 — probability signal, not confirmed exploitation