How severe is CVE-2024-21887?

CVE-2024-21887 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2024-21887 being actively exploited?

Yes. CVE-2024-21887 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2024-01-10, which means active exploitation has been confirmed. It should be prioritised for remediation.

What products are affected by CVE-2024-21887?

CVE-2024-21887 primarily affects Ivanti Connect Secure. In total, 81 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2024-21887?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Because this CVE is known to be actively exploited, treat remediation as urgent — CISA KEV typically sets a short remediation deadline.

Does CVE-2024-21887 have an EU (EUVD) identifier?

Yes. CVE-2024-21887 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-19498. It is also flagged as exploited in the EUVD (since 2024-01-10).

When was CVE-2024-21887 published?

CVE-2024-21887 was published on 2024-01-12 and last updated on 2026-08-04.

CVE-2024-21887

CVE-2024-21887 is a critical-severity vulnerability in Ivanti Connect Secure with a CVSS 3.x base score of 9.1. It is listed in CISA's Known Exploited Vulnerabilities (KEV) catalog, confirming it has been exploited in the wild (added 2024-01-10). The underlying weakness is classified as CWE-77.

Key facts

Severity: Critical (CVSS 3.x base score 9.1)
EPSS exploit prediction: 100% (100th percentile)
Actively exploited: Yes — listed in CISA KEV (added 2024-01-10)
EU (EUVD) id: EUVD-2024-19498
EU exploitation: Flagged exploited in the ENISA EU Vulnerability Database (since 2024-01-10)
Weakness: CWE-77
Affected product: Ivanti Connect Secure
Published: 2024-01-12
Last modified: 2026-08-04

Description

A command injection vulnerability in web components of Ivanti Connect Secure (9.x, 22.x) and Ivanti Policy Secure (9.x, 22.x) allows an authenticated administrator to send specially crafted requests and execute arbitrary commands on the appliance.

Frequently asked questions

What is CVE-2024-21887?: A command injection vulnerability in web components of Ivanti Connect Secure (9.x, 22.x) and Ivanti Policy Secure (9.x, 22.x) allows an authenticated administrator to send specially crafted requests and execute arbitrary commands on the appliance.
How severe is CVE-2024-21887?: CVE-2024-21887 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2024-21887 being actively exploited?: Yes. CVE-2024-21887 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2024-01-10, which means active exploitation has been confirmed. It should be prioritised for remediation.
What products are affected by CVE-2024-21887?: CVE-2024-21887 primarily affects Ivanti Connect Secure. In total, 81 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2024-21887?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Because this CVE is known to be actively exploited, treat remediation as urgent — CISA KEV typically sets a short remediation deadline.
Does CVE-2024-21887 have an EU (EUVD) identifier?: Yes. CVE-2024-21887 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-19498. It is also flagged as exploited in the EUVD (since 2024-01-10).
When was CVE-2024-21887 published?: CVE-2024-21887 was published on 2024-01-12 and last updated on 2026-08-04.

References

Affected products (81)

cpe:2.3:a:ivanti:connect_secure:9.0:*:*:*:*:*:*:*
cpe:2.3:a:ivanti:connect_secure:9.1:r1:*:*:*:*:*:*
cpe:2.3:a:ivanti:connect_secure:9.1:r10:*:*:*:*:*:*
cpe:2.3:a:ivanti:connect_secure:9.1:r11:*:*:*:*:*:*
cpe:2.3:a:ivanti:connect_secure:9.1:r11.3:*:*:*:*:*:*
cpe:2.3:a:ivanti:connect_secure:9.1:r11.4:*:*:*:*:*:*
cpe:2.3:a:ivanti:connect_secure:9.1:r11.5:*:*:*:*:*:*
cpe:2.3:a:ivanti:connect_secure:9.1:r12:*:*:*:*:*:*
cpe:2.3:a:ivanti:connect_secure:9.1:r12.1:*:*:*:*:*:*
cpe:2.3:a:ivanti:connect_secure:9.1:r13:*:*:*:*:*:*
cpe:2.3:a:ivanti:connect_secure:9.1:r13.1:*:*:*:*:*:*
cpe:2.3:a:ivanti:connect_secure:9.1:r14:*:*:*:*:*:*
cpe:2.3:a:ivanti:connect_secure:9.1:r15:*:*:*:*:*:*
cpe:2.3:a:ivanti:connect_secure:9.1:r15.2:*:*:*:*:*:*
cpe:2.3:a:ivanti:connect_secure:9.1:r16:*:*:*:*:*:*
cpe:2.3:a:ivanti:connect_secure:9.1:r16.1:*:*:*:*:*:*
cpe:2.3:a:ivanti:connect_secure:9.1:r17:*:*:*:*:*:*
cpe:2.3:a:ivanti:connect_secure:9.1:r17.1:*:*:*:*:*:*
cpe:2.3:a:ivanti:connect_secure:9.1:r18:*:*:*:*:*:*
cpe:2.3:a:ivanti:connect_secure:9.1:r2:*:*:*:*:*:*
cpe:2.3:a:ivanti:connect_secure:9.1:r3:*:*:*:*:*:*
cpe:2.3:a:ivanti:connect_secure:9.1:r4:*:*:*:*:*:*
cpe:2.3:a:ivanti:connect_secure:9.1:r4.1:*:*:*:*:*:*
cpe:2.3:a:ivanti:connect_secure:9.1:r4.2:*:*:*:*:*:*
cpe:2.3:a:ivanti:connect_secure:9.1:r4.3:*:*:*:*:*:*
cpe:2.3:a:ivanti:connect_secure:9.1:r5:*:*:*:*:*:*
cpe:2.3:a:ivanti:connect_secure:9.1:r6:*:*:*:*:*:*
cpe:2.3:a:ivanti:connect_secure:9.1:r7:*:*:*:*:*:*
cpe:2.3:a:ivanti:connect_secure:9.1:r8:*:*:*:*:*:*
cpe:2.3:a:ivanti:connect_secure:9.1:r8.1:*:*:*:*:*:*
cpe:2.3:a:ivanti:connect_secure:9.1:r8.2:*:*:*:*:*:*
cpe:2.3:a:ivanti:connect_secure:9.1:r9:*:*:*:*:*:*
cpe:2.3:a:ivanti:connect_secure:9.1:r9.1:*:*:*:*:*:*
cpe:2.3:a:ivanti:connect_secure:22.1:r1:*:*:*:*:*:*
cpe:2.3:a:ivanti:connect_secure:22.1:r6:*:*:*:*:*:*
cpe:2.3:a:ivanti:connect_secure:22.2:-:*:*:*:*:*:*
cpe:2.3:a:ivanti:connect_secure:22.2:r1:*:*:*:*:*:*
cpe:2.3:a:ivanti:connect_secure:22.3:r1:*:*:*:*:*:*
cpe:2.3:a:ivanti:connect_secure:22.4:r1:*:*:*:*:*:*
cpe:2.3:a:ivanti:connect_secure:22.4:r2.1:*:*:*:*:*:*

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