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MEDIUM

CVE-2021-21177

CVSS v3

6.5

MEDIUM

EPSS Score

17.3 %

exploit probability, as of 2026-10-19

CISA KEV

No

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Vendor advisories

  • CVE-2021-21177 Red Hat Product Security

    chromium-browser: Insufficient policy enforcement in Autofill

Full record on NVD

Description

Insufficient policy enforcement in Autofill in Google Chrome prior to 89.0.4389.72 allowed a remote attacker to obtain potentially sensitive information from process memory via a crafted HTML page.

Technical details

Published
2021-03-09

Frequently asked questions

What is CVE-2021-21177?

Insufficient policy enforcement in Autofill in Google Chrome prior to 89.0.4389.72 allowed a remote attacker to obtain potentially sensitive information from process memory via a crafted HTML page.

Is CVE-2021-21177 actively exploited?

Active exploitation of CVE-2021-21177 has not been confirmed. Its EPSS score was 17.3% on 2026-10-19, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2021-21177?

CVE-2021-21177 has a CVSS v3 base score of 6.5 (MEDIUM severity).

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