How severe is CVE-2024-21401?

CVE-2024-21401 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2024-21401 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (70th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-21401?

CVE-2024-21401 affects Microsoft Entra Jira Sso Plugin. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-21401?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2024-21401 have an EU (EUVD) identifier?

Yes. CVE-2024-21401 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-19111.

When was CVE-2024-21401 published?

CVE-2024-21401 was published on 2024-02-13 and last updated on 2026-06-17.

CVE-2024-21401

CVE-2024-21401 is a critical-severity vulnerability in Microsoft Entra Jira Sso Plugin with a CVSS 3.x base score of 9.8. 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-284.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 1% (70th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-19111
Weakness: CWE-284
Affected product: Microsoft Entra Jira Sso Plugin
Published: 2024-02-13
Last modified: 2026-06-17

Description

Microsoft Entra Jira Single-Sign-On Plugin Elevation of Privilege Vulnerability

Frequently asked questions

What is CVE-2024-21401?: Microsoft Entra Jira Single-Sign-On Plugin Elevation of Privilege Vulnerability
How severe is CVE-2024-21401?: CVE-2024-21401 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2024-21401 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (70th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-21401?: CVE-2024-21401 affects Microsoft Entra Jira Sso Plugin. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-21401?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2024-21401 have an EU (EUVD) identifier?: Yes. CVE-2024-21401 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-19111.
When was CVE-2024-21401 published?: CVE-2024-21401 was published on 2024-02-13 and last updated on 2026-06-17.

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-21401

Affected products (1)

cpe:2.3:a:microsoft:entra_jira_sso_plugin:*:*:*:*:*:*:*:*

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