Page generated: 10 Nov 2026, 20:23 UTC
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CVE-2021-4102

Use after free in V8 in Google Chrome prior to 96.0.4664.110 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.

CVSS 8.8 (HIGH) KEV: KNOWN CATALOG

Attention and evidence

HYPE SCORE
0.0/10
REALITY · THREAT PRIORITY
8.4/10
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: 7.84%: +0.04

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

Sources: 9 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

Qualys
Press · 22 Feb 2022, 08:00 · Managing CISA Known Exploited Vulnerabilities with Qualys VMDR - Qualys
The Indian Express
Press · 15 Dec 2021, 08:00 · Google Chrome releases emergency update to fix multiple security vulnerabilities - The Indian Express
Liverpool Echo
Press · 15 Dec 2021, 08:00 · Anyone with Google Chrome told to make urgent check - Liverpool Echo
India Today
Press · 15 Dec 2021, 08:00 · Google Chrome rolls out critical security update, users urged to download immediately - India Today
PCWorld
Press · 14 Dec 2021, 08:00 · Update Chrome now, because hackers are attacking it - PCWorld
See all 9 source documents
gHacks
Press · 14 Dec 2021, 08:00 · Google releases critical security update for Chrome that fixes a 0-day vulnerability - gHacks
Forbes
Press · 14 Dec 2021, 08:00 · Google Confirms 16th Zero-Day Chrome Hack, Issues Critical Update - Forbes
BleepingComputer
Press · 13 Dec 2021, 08:00 · Google pushes emergency Chrome update to fix zero-day used in attacks - BleepingComputer
Cisco Talos Blog
Press · 10 Dec 2021, 08:00 · Threat Source Newsletter (Dec. 16, 2021) - Cisco Talos Blog

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 8.4 (2026-11-02 15:12). 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 7.8%
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 13:58:31.036516+00:00 · EPSS snapshot: 2026-11-05T12:03:04Z

Source event timeline
First press mention
10 Dec 2021, 08:00
Added to the CISA KEV catalog
15 Dec 2021, 00:00
Published
11 Feb 2022, 22:55
Latest press mention
22 Feb 2022, 08:00
Score calculated
05 Nov 2026, 13:58