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Apexward Pulse
Type Vulnerability

Google

Google Chromium V8 Memory Overflow Vulnerability

1 sourceCVE-2026-3910

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

  • Do not treat uncorroborated claims as confirmed breaches.

Questions to ask IT

  • Do we run Google Chromium V8, and is every instance on version 146.0.7680.75 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 16 Nov?

Next steps

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

Summary

  • Google Chromium V8 contains an improper restriction of operations within the bounds of a memory buffer vulnerability that could allow a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page.
  • CVE-2026-3910 is listed in known-exploited catalogue (exploitation in the wild)
  • 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

8 reports

Part of Out-of-bounds write vulnerabilities reported

All 8 reports in this story

Pulse

Last checked 1h ago · Next recheck 10 Nov 2026, 02:04 UK time · 1 quiet check collapsed

Signal
9 Nov 2026, 02:04 UK time · 1h ago

in the next 30 days first recorded at 2.7% (lower likelihood signal, not confirmed exploitation). Suggested changed to 7d.

recorded — watch for changes; not confirmed exploitation.

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

3 quiet checks hidden.

Sources

How we know

Statements extracted from sources. Higher confidence means stronger corroboration.

  • ConfirmedHeadline90% confidence

    Google Chromium V8 Improper Restriction of Operations Within the Bounds of a Memory Buffer Vulnerability

  • ConfirmedSummary fact75% confidence

    Google Chromium V8 contains an improper restriction of operations within the bounds of a memory buffer vulnerability that could allow a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page. This vulnerability could affect multiple web browsers that utilise Chromium, including, but not limited to, Google Chrome, Microsoft Edge, and Opera. Affects Google Chromium V8. Known ransomware campaign use: Unknown.

  • ConfirmedCVE identifier95% confidence

    Event involves CVE-2026-3910

  • ConfirmedKnown-exploited catalogue98% confidence

    CVE-2026-3910 is listed in known-exploited catalogue (exploitation in the wild)