CVE-2024-21887: in the CISA KEV catalogue

Ivanti Connect Secure and Policy Secure Command Injection Vulnerability. CISA added CVE-2024-21887 to the Known Exploited Vulnerabilities catalogue on 2024-01-10 with a default due date of 2024-01-22. Known ransomware campaign use: Known. Forensic triage flag: No.

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. (CISA description)

Vendor / product: Ivanti Connect Secure and Policy Secure
CWE: CWE-77
CISA required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
EPSS: 100%, percentile 99 (scored 2026-11-03)

EPSS puts nearly every time in 100 odds (100%) on exploitation activity being observed in the next 30 days. Its score is higher than or equal to that of 99% of scored CVEs. This is a model estimate about exploitation anywhere, not about your environment.

Vendor and reference links (from CISA)

Your own deadline under CISA BOD 26-04 depends on exposure, automatability and technical impact: work it out with the BOD 26-04 calculator.

Data dates. CISA KEV catalogue version 2026.11.03, released 2026-11-03, 1,767 entries (checked 2026-11-03). EPSS model v2026.06.15, scored 2026-11-03, 399,388 CVEs. Sources: CISA and FIRST (EPSS by FIRST; scores generated by Empirical Security). Copied to our own database and refreshed automatically; if a refresh fails, the previous copy keeps serving with its own date.

Frequently asked questions

Is CVE-2024-21887 in the CISA KEV catalogue?

Yes. CISA added CVE-2024-21887 (Ivanti Connect Secure and Policy Secure Command Injection Vulnerability) to the Known Exploited Vulnerabilities catalogue on 2024-01-10. CISA's default due date for it is 2024-01-22.

Is CVE-2024-21887 used in ransomware attacks?

CISA marks known ransomware campaign use as Known for CVE-2024-21887.

What should I do about CVE-2024-21887?

CISA's required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Sources

CISA, Known Exploited Vulnerabilities Catalog (accessed 2026-11-03)
FIRST, Exploit Prediction Scoring System (EPSS) (EPSS by FIRST; scores generated by Empirical Security)
NVD record for CVE-2024-21887