How severe is CVE-2021-4324?

CVE-2021-4324 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2021-4324 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (41st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-4324?

CVE-2021-4324 affects Google Chrome. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-4324?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-4324 published?

CVE-2021-4324 was published on 2023-07-29 and last updated on 2026-06-17.

CVE-2021-4324

CVE-2021-4324 is a medium-severity vulnerability in Google Chrome with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
EPSS exploit prediction: 1% (41st percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Google Chrome
Published: 2023-07-29
Last modified: 2026-06-17

Description

Insufficient policy enforcement in Google Update in Google Chrome prior to 90.0.4430.93 allowed a remote attacker to read arbitrary files via a malicious file. (Chromium security severity: Medium)

Frequently asked questions

What is CVE-2021-4324?: Insufficient policy enforcement in Google Update in Google Chrome prior to 90.0.4430.93 allowed a remote attacker to read arbitrary files via a malicious file. (Chromium security severity: Medium)
How severe is CVE-2021-4324?: CVE-2021-4324 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2021-4324 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (41st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-4324?: CVE-2021-4324 affects Google Chrome. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-4324?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-4324 published?: CVE-2021-4324 was published on 2023-07-29 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*

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