How severe is CVE-2023-21719?

CVE-2023-21719 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-2023-21719 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (75th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-21719?

CVE-2023-21719 affects Microsoft Edge Chromium. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-21719?

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

When was CVE-2023-21719 published?

CVE-2023-21719 was published on 2023-01-24 and last updated on 2026-06-17.

CVE-2023-21719

CVE-2023-21719 is a medium-severity vulnerability in Microsoft Edge Chromium 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. The underlying weakness is classified as CWE-863.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
EPSS exploit prediction: 2% (75th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-863
Affected product: Microsoft Edge Chromium
Published: 2023-01-24
Last modified: 2026-06-17

Description

Microsoft Edge (Chromium-based) Security Feature Bypass Vulnerability

Frequently asked questions

What is CVE-2023-21719?: Microsoft Edge (Chromium-based) Security Feature Bypass Vulnerability
How severe is CVE-2023-21719?: CVE-2023-21719 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-2023-21719 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (75th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-21719?: CVE-2023-21719 affects Microsoft Edge Chromium. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-21719?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-21719 published?: CVE-2023-21719 was published on 2023-01-24 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:microsoft:edge_chromium:*:*:*:*:*:*:*:*

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