THREATPORT/VULNERABILITY/CVE-2021-21141
MEDIUM SEVERITY

CVE-2021-21141

Chrome vulnerability

CVSS
6.5
EPSS
5.4%
EPSS pct
92th
Exploited
No known
Insufficient policy enforcement in File System API in Google Chrome prior to 88.0.4324.96 allowed a remote attacker to bypass file extension policy via a crafted HTML page.
Affected vendor
Google
Affected product
Chrome
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
Weakness type (CWE)
Published
2021-02-09

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no privileges, user interaction. Successful exploitation leads to high impact to integrity.

Its EPSS score of 5.4% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 92% of all scored CVEs.

Check your external exposure to CVE-2021-21141

  • Confirm whether Google Chrome is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2021-21141.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2021-21141

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2021-21141 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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Are you exposed to CVE-2021-21141?

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