Input Validation Flaw in DevTools in Google Chrome prior to 152.0.7977.65 allowed a remote attacker who had compromised the renderer process to bypass site isolation via a cra…
At a glance
Low rather than Medium: UK relevance is 40 of 100, little UK-specific signal so far.
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 Chrome, and which versions?
- If it is not yet patched, what mitigation is in place, and will the fix be done by 2 Dec?
Next steps
- Confirm whether this affects systems or suppliers in your estate
No technical write-up beyond the summary below yet.
Next steps
- Review the advisory against your asset inventory and patch cadence
Summary
- Exploitation in the wild is not confirmed; treat this as a prioritisation signal.
Read the original reportMicrosoft Security Update Guide RSS(opens in a new tab)
Products and services involved
- Google Chrome93% match confidence · CVE-2026-79203
Part of Multiple Chrome and Adobe vulnerabilities disclosed
- UI misrepresentation in Payments in Google Chrome prior to 155.0.8059.39 allowed a remote attacker leveraging social engineering to spoof UI elements via a crafted HTML page
- Incorrect reference resolution in Browser in Google Chrome on on Mac prior to 155.0.8059.39 allowed a remote attacker leveraging social engineering to obtain sensitive information…
- Use after free in Select in Google Chrome prior to 155.0.8059.39 allowed a remote attacker leveraging social engineering to execute arbitrary code inside the sandbox via a crafted…
- Uninitialized resource in ANGLE in Google Chrome on on Windows prior to 155.0.8059.39 allowed a remote attacker to read memory outside the sandbox via a crafted HTML page
Pulse
Last checked 6d ago · Recheck overdue since 3 Nov 2026, 07:04 UK time
- Story28 Oct 2026, 20:59 UK time · 28 Oct
Linked reporting from Microsoft Security Update Guide RSS (vendor psirt).
Read source (Microsoft Security Update Guide RSS) - Signal2 Nov 2026, 07:04 UK time · 6d ago
in the next 30 days first recorded at 0.3% (lower likelihood signal, not confirmed exploitation).
2 entries so far. The timeline chart appears once this story has more history.
Sources
Chromium: CVE-2026-79203 Improper input validation in DevTools
How we know
Statements extracted from sources. Higher confidence means stronger corroboration.
- ClaimedHeadline60% confidence
Improper input validation in DevTools in Google Chrome prior to 152.0.7977.65 allowed a remote attacker who had compromised the renderer process to bypass site isolation via a cra…
- ConfirmedCVE identifier95% confidence
Event involves CVE-2026-79203