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VulnerabilityCVE-2020-16040Published 2021-01-08

CVE-2020-16040 — Google Chrome

mediumPublic exploit1 PoC repo

As of 2024-08-04, CVE-2020-16040 is a MEDIUM-severity vulnerability in Google Chrome, CVSS v3.1 6.5, EPSS 99.5% (99.9th percentile). Threadlinqs Intelligence links 1 tracked threat campaign to CVE-2020-16040, most recently “PeckBirdy JScript C2 Framework Hides China-Aligned APT Infrastructure Inside a Casino-Site Network (CVE-2020-16040)”.

CVSS v3.1
6.5/10Medium
EPSS
99.5%Higher than 99.9% of scored CVEs
CISA KEV
NoNot in the KEV catalog
Tracked threats
1Campaigns referencing it
Priority
9.2/10Threadlinqs triage score
Published
Updated 2024-08-04
CVSS v3.1 6.5 (MEDIUM) · EPSS 99.5% (higher than 99.9% of all scored CVEs) · Priority 9.2/10 · Published 2021-01-08

Last updated:

What is CVE-2020-16040?

Insufficient data validation in V8 in Google Chrome prior to 87.0.4280.88 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.

The record classifies CVE-2020-16040 under weakness classes CWE-20, CWE-190, CWE-787. Its CVSS v3 base vector states that the flaw is reachable remotely over the network, needs no prior authentication, needs a user to take an action first, and has high impact on availability. 1 affected-product entry is recorded, across 1 vendor, listed below. The identifier was first published 2096 days ago.

Severity and exploitation probability

CVSS v3.1 base score
6.5 — MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
EPSS (FIRST)
99.5% probability of exploitation in the next 30 days, higher than 99.9% of all scored CVEs
CISA KEV
Not listed in the CISA Known Exploited Vulnerabilities catalog
Threadlinqs priority
9.2/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
Published
2021-01-08, last modified 2024-08-04

Is CVE-2020-16040 being exploited?

Weaponised exploit code for CVE-2020-16040 is publicly available. 1 public proof-of-concept repository is tracked for this identifier.

Affected products and versions

How to fix CVE-2020-16040

The record marks a vendor fix as available for CVE-2020-16040. Patch reference: https://crbug.com/1150649. Vendor advisory: https://chromereleases.googleblog.com/2020/12/stable-channel-update-for-desktop.html. Apply the vendor fix referenced above to every affected product listed in this record, then confirm the running version against the vendor advisory.

Threat activity tracking CVE-2020-16040

1 tracked threat in the Threadlinqs corpus references CVE-2020-16040, either in the campaign’s CVE list or as an indicator on the campaign record.

Sources

Enriched from CVE.org, NVD, FIRST EPSS, GitHub Security Advisories, public proof-of-concept repositories. Last verified by Threadlinqs on . This product uses the NVD API but is not endorsed or certified by the NVD.

Other references