CVE-2024-21887
CRITICALCISA KEVEPSS 100th pctlDescription
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 to fix
Actively exploited, no published fix found yet
CISA required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Federal remediation due: 2024-01-22
Known ransomware campaign use
Mitigation guidance may be in the linked vendor advisories in the References section below.
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CVSS v3 Vector
Exploitability
Impact
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Exploit Intelligence
Very high risk: more likely to be exploited than 100% of all known CVEs.
Ivanti Connect Secure and Policy Secure Command Injection Vulnerability
Ivanti Connect Secure (ICS, formerly known as Pulse Connect Secure) and Ivanti Policy Secure contain a command injection vulnerability in the web components of these products, which can allow an authenticated administrator to send crafted requests to execute code on affected appliances. This vulnerability can be leveraged in conjunction with CVE-2023-46805, an authenticated bypass issue.
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Remediation due: 2024-01-22
Associated with ransomware campaigns
References
Related Vulnerabilities
Other CWE-77 (Command Injection) vulnerabilities, ordered by exploit likelihood. View all
| CVE | Severity | CVSS | EPSS | Exploited | Fix |
|---|---|---|---|---|---|
| CVE-2024-3400 | Critical | 10.0 | 100% | KEV + Ransom | - |
| CVE-2023-1671 | Critical | 9.8 | 100% | KEV | Fix |
| CVE-2023-1389 | High | 8.8 | 100% | KEV | Fix |
| CVE-2021-1498 | Critical | 9.8 | 100% | KEV | Fix |
| CVE-2012-1823 | Critical | 9.8 | 100% | KEV | Fix |
| CVE-2024-3273 | High | 7.3 | 100% | KEV | - |
Common questions
How do I fix CVE-2024-21887?
No published fix for CVE-2024-21887 has been found yet. It is on the CISA Known Exploited Vulnerabilities list; federal agencies must remediate by 2024-01-22. Apply the vendor's mitigations per CISA's guidance.
Is CVE-2024-21887 being actively exploited?
Yes. CVE-2024-21887 is listed in the CISA Known Exploited Vulnerabilities catalog, which means exploitation has been observed in the wild. CISA has also linked it to known ransomware campaigns. US federal agencies were required to remediate it by 2024-01-22. Treat it as a priority whatever its CVSS score says.
How severe is CVE-2024-21887?
CVE-2024-21887 has a CVSS v3 base score of 9.1, rated critical. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-08-04.