Ivanti Connect Secure / Policy Secure Command Injection
A command-injection vulnerability in the web components of Ivanti Connect Secure and Policy Secure lets an authenticated administrator send specially crafted requests to execute arbitrary commands. Chained with CVE-2023-46805's auth bypass for unauthenticated RCE in the wild.
- Vendor
- Ivanti
- Product
- Connect Secure and Policy Secure
- CVSS
- 9.1
- EPSS (exploit probability)
- 100.0%
- Status
- kevransomware use
- CISA patch-by (BOD 22-01)
- Published
Is CVE-2024-21887 being exploited?
Yes. CISA added CVE-2024-21887 to its Known Exploited Vulnerabilities catalog on . CISA only lists a CVE when it has reliable evidence of exploitation in the wild. CISA marks it as known to be used in ransomware campaigns.
FIRST's EPSS model puts the probability of exploitation activity in the next 30 days at 100.0% (scored October 14, 2026).
- CISA KEV[ LISTED ]
- ENISA EUVD (exploited)[ — ]
- CIRCL KEV[ — ]
Catalog snapshot 2026-11-13. Full cross-catalog view: /kev-comparison
CVE-2024-21887 timeline
- Added to CISA KEV-2d (before NVD)
- Published to NVD
- First 0dayNews coverage+896d
Every event links to its source. Catalog dates are each catalog's own; day offsets count from NVD publication. Data: JSON
What to do
US federal civilian agencies must remediate by (12 days after listing) under BOD 22-01. Everyone else: that deadline is a sensible upper bound, not a target. Vendor guidance and the NVD record are linked under Source above.
CVE-2024-21887 is a command-injection vulnerability in Ivanti Connect Secure and Policy Secure that, on its own, requires administrative authentication to exploit. Its real-world danger comes from being chained with CVE-2023-46805 — an authentication-bypass flaw in the same product line — which removes the authentication requirement entirely.
The chain gives a remote, unauthenticated attacker arbitrary command execution on the appliance. Mandiant attributed early exploitation to a suspected China-nexus espionage actor it tracks as UNC5221, observed deploying custom web shells and credential-harvesting tooling against Ivanti gateways before a patch was public.
Why it mattered
This pairing is a textbook example of a “vulnerability chain” — two flaws that are individually serious but together are catastrophic, turning a managed VPN gateway into a fully remote-exploitable foothold. Both CVEs were added to the CISA KEV catalog simultaneously, and CISA’s emergency directive required disconnecting affected appliances from federal networks pending mitigation.
See the NVD record above and Ivanti’s security advisory for the full chain analysis and patched versions.
Other Ivanti Connect Secure CVEs we track
| CVE / Vulnerability | Severity | CVSS | EPSS | Added to KEV |
|---|---|---|---|---|
| CVE-2026-118527 Ivanti Connect Secure Predictable Identifier File Uploadwrite-up | [ UNKNOWN ] | — | 0.8% | |
| CVE-2026-111357 Ivanti Connect Secure Missing Authentication for Critical Function Vulnerabilitywrite-up | [ HIGH ] | 7.0 | 0.5% | |
| CVE-2026-104935 Ivanti Connect Secure Authentication Bypass by Spoofingwrite-up | [ HIGH ] | 8.6 | 88.9% | |
| CVE-2025-22457 Ivanti Connect Secure, Policy Secure, and ZTA Gateways Stack-Based Buffer Overflow Vulnerabilityransomware use | [ CRITICAL ] | 9.0 | 100.0% | |
| CVE-2025-0282 Ivanti Connect Secure, Policy Secure, and ZTA Gateways Stack-Based Buffer Overflow Vulnerabilityransomware use | [ CRITICAL ] | 9.0 | 100.0% | |
| CVE-2024-21893 Ivanti Connect Secure, Policy Secure, and Neurons Server-Side Request Forgery (SSRF) Vulnerabilityransomware use | [ HIGH ] | 8.2 | 100.0% | |
| CVE-2023-46805 Ivanti Connect Secure / Policy Secure Authentication Bypassransomware usewrite-up | [ HIGH ] | 8.2 | 100.0% | |
| CVE-2021-22900 Ivanti Pulse Connect Secure Unrestricted File Upload Vulnerability | [ HIGH ] | 7.2 | 14.1% |
