Page generated: 11 Nov 2026, 02:57 UTC
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CVE-2026-87491

Out of bounds write in V8 in Google Chrome prior to 153.0.8010.36 allowed a remote attacker to execute arbitrary code inside the sandbox via a crafted HTML page. (Chromium security severity: Medium)

CVSS 8.8 (HIGH) KEV: KNOWN CATALOG

Attention and evidence

HYPE SCORE
0.0/10
REALITY · THREAT PRIORITY
8.3/10
General review priority; not probability

Evidence confidence: Exploitation recorded

Why this priority?
  • Recorded exploitation baseline: +7.00
  • Technical severity: CVSS 8.8: +1.32
  • Fresh EPSS: 3.51%: +0.02

General review priority, not probability, victim count or asset-specific risk. A range covers missing CVSS/EPSS inputs within the current evidence state.

Sources: 26 documents and public datasets.

Hype components

Headline sample (25%)
0/100
Press, 30 days (60%)
0/100
Grounded branding (15%)
0/100
HYPE TOTAL0/100

Sources and documents

The Hacker News
Press · 23 Sep 2026, 07:00 · Chinese Hackers Exploit Chrome-Windows Zero-Day Chain to Deploy CLEANGULP Malware - The Hacker News
Hong Kong Computer Emergency Response Team Coordination Centre
Press · 16 Sep 2026, 07:00 · Microsoft Edge Multiple Vulnerabilities - Hong Kong Computer Emergency Response Team Coordination Centre
The Hacker News
Press · 15 Sep 2026, 07:00 · China-Linked Hackers Exploit Chrome-Windows Zero-Day Chain to Deploy GRIMWEDGE - The Hacker News
Malwarebytes
Press · 10 Sep 2026, 07:00 · Update Chrome now to protect against an actively exploited vulnerability - Malwarebytes
news.lavx.hu
Press · 10 Sep 2026, 07:00 · Chrome V8 zero-day exploited in the wild enables code execution inside sandbox - news.lavx.hu
See all 26 source documents
Hong Kong Computer Emergency Response Team Coordination Centre
Press · 10 Sep 2026, 07:00 · Google Chrome Multiple Vulnerabilities - Hong Kong Computer Emergency Response Team Coordination Centre
Notebookcheck
Press · 10 Sep 2026, 07:00 · Google Chrome 153 patches a zero-day under active attack, restart required - Notebookcheck
TechloMedia
Press · 09 Sep 2026, 21:57 · Chrome Has Patched Its 7th Zero-Day of 2026, and Hackers Are Already Exploiting It - TechloMedia
Help Net Security
Press · 09 Sep 2026, 07:00 · Google fixes yet another actively exploited Chrome zero-day (CVE-2026-87491) - Help Net Security
Windows Report
Press · 09 Sep 2026, 07:00 · Google Fixes 230 Chrome Vulnerabilities, Including Active Zero-Day - Windows Report
Startup Fortune
Press · 09 Sep 2026, 07:00 · Google Patches Chrome's Seventh Zero-Day of 2026 in Just Two Days - Startup Fortune
CyberInsider
Press · 09 Sep 2026, 07:00 · Google fixes second actively exploited Chrome zero-day in under five days - CyberInsider
Bitdefender
Press · 09 Sep 2026, 07:00 · Google patches Chrome zero-day exploited by hackers – update now! - Bitdefender
The News International
Press · 09 Sep 2026, 07:00 · Google fixes Chrome security flaw already being used against users - The News International
Security Affairs
Press · 09 Sep 2026, 07:00 · Google fixes the seventh actively exploited Chrome zero-day of 2026 - Security Affairs
BleepingComputer
Press · 09 Sep 2026, 07:00 · Google warns of new Chrome zero-day bug exploited in attacks - BleepingComputer
CyberSecurityNews
Press · 09 Sep 2026, 07:00 · Chrome 153 Fixes 230 Vulnerabilities, Including One 0-Day Exploited in the Wild - CyberSecurityNews
Cyber Press
Press · 09 Sep 2026, 07:00 · Google Chrome 153 Fixes 230 Security Flaws Including V8 Bug Exploited in the Wild - Cyber Press
Proofpoint
Press · 09 Sep 2026, 07:00 · Once in a BlueMoon: Multiple State-Aligned Threat Actors Rapidly Adopt Novel Exploit Chain Using Chrome and Windows Zero-Days - Proofpoint
SecNews.gr
Press · 09 Sep 2026, 07:00 · Chrome V8 Zero-Day: Code Execution Inside the Sandbox - SecNews.gr
SOC Prime
Press · 09 Sep 2026, 07:00 · CVE-2026-87491: Chrome V8 Zero-Day Exploited in the Wild Enables Arbitrary Code Execution - SOC Prime
CyberScoop
Press · 09 Sep 2026, 07:00 · Chinese espionage groups swarm to exploit triple-link chain of zero-days - CyberScoop
SecurityWeek
Press · 09 Sep 2026, 07:00 · Chrome 153 Patches Seventh Zero-Day of 2026 - SecurityWeek
GBHackers News
Press · 09 Sep 2026, 07:00 · Google Chrome 153 Released With 230 Security Fixes and Zero-Day Exploited in the Wild - GBHackers News
The Hacker News
Press · 09 Sep 2026, 07:00 · Chrome V8 Zero-Day Exploited in the Wild Enables Code Execution Inside Sandbox - The Hacker News
The Hacker News
Press · 09 Sep 2026, 07:00 · Four Spy Groups Used the Same Chrome and Windows Exploit Kit Within a Week - The Hacker News

Score evolution

● Hype   ● Reality

Earlier evidence-support scores are retained in history; this chart shows only the current priority definition.

First record: hype 0.0 · reality 8.3 (2026-11-02 15:14). The curve appears once the score changes.

Public exploit evidence

0

Public exploit entries / repo candidates

Evidence context and dated references

Reality is general threat/review priority, combining observed exploitation, CVSS severity and fresh EPSS. Evidence confidence is separate. This is not calibrated risk, a victim count or an asset-specific assessment. A range reflects missing numeric inputs.

Evidence in context

Confidence in exploitation evidence
Exploitation recorded
Priority basis
Recorded exploitation; CVSS 8.8; EPSS 3.5%
Attention, last 30 days
0 distinct story titles; 0 press documents; 0 publisher domains.
Technical potential
network access, no prior privileges, user interaction.
Observed activity
Exploitation recorded in CISA KEV.
Known scale
Not quantified.
Evidence confidence basis
Trusted exploitation confirmation

Score evaluated: 2026-11-05 14:00:29.412792+00:00 · EPSS snapshot: 2026-11-05T12:03:04Z

Source event timeline
Added to the CISA KEV catalog
09 Sep 2026, 00:00
Published
09 Sep 2026, 00:09
First press mention
09 Sep 2026, 07:00
Latest press mention
23 Sep 2026, 07:00
Score calculated
05 Nov 2026, 14:00