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CVE-2018-20066

26
FAUCET Score

CVE-2018-20066 describes an incorrect object lifecycle vulnerability in Google Chrome versions prior to 71.0.3578.80. This flaw allowed a remote attacker to potentially exploit heap corruption through a specially crafted HTML page. With a CVSS score of 8.8 (High), successful exploitation could lead to high impact on confidentiality, integrity, and availability, requiring user interaction but with low attack complexity. There is no evidence of active exploitation (not in KEV), and no public exploit code is available in Metasploit, Nuclei, or ExploitDB. Community discussion and media coverage are minimal, suggesting limited public attention to this specific CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 71.0.3578.80CPE matchmatch criteria
cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

8.8HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.60%
Probability of exploitation in next 30 days
EPSS Percentile
45.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0060 is in the 46th percentile among its peer group of 14,875 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.1 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

chromereleases.googleblog.com / 2018/12/stable-channel-update-for-desktop.html
crbug.com / 856135