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.
The record classifies CVE-2024-21887 under weakness class CWE-77. Its CVSS v3 base vector states that the flaw is reachable remotely over the network, needs high-privilege credentials, needs no user interaction, and has high impact on confidentiality, integrity, availability. 81 affected-product entries are recorded, across 1 vendor, listed below. The identifier was first published 1020 days ago.
Severity and exploitation probability
- CVSS v3.1 base score
- 9.1 — CRITICAL
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H - EPSS (FIRST)
- 99.9% probability of exploitation in the next 30 days, higher than 99.9% of all scored CVEs
- CISA KEV
- Listed since 2024-01-10, federal remediation deadline 2024-01-22 — used in known ransomware campaigns
- Threadlinqs priority
- 10/10 — CISA lists it as used in ransomware, which Threadlinqs scores at the maximum
- Published
- 2024-01-12, last modified 2026-08-04
Is CVE-2024-21887 being exploited?
CISA added CVE-2024-21887 to the Known Exploited Vulnerabilities catalog on 2024-01-10, which means the agency holds evidence of exploitation in the wild; US federal civilian agencies had to remediate it by 2024-01-22 under BOD 22-01. CISA flags the vulnerability as one used in known ransomware campaigns. Weaponised exploit code for CVE-2024-21887 is publicly available. 9 public proof-of-concept repositories are tracked for this identifier. A ProjectDiscovery Nuclei detection template exists (http/cves/2024/CVE-2024-21887.yaml). It currently carries a trending score of 60 in the Threadlinqs vulnerability feed.
- Chocapikk/CVE-2024-21887 (github)
- duy-31/CVE-2023-46805_CVE-2024-21887 (github)
- seajaysec/Ivanti-Connect-Around-Scan (github)
- oways/ivanti-CVE-2024-21887 (github)
- raminkarimkhani1996/CVE-2023-46805_CVE-2024-21887 (github)
- Hexastrike/Ivanti-Connect-Secure-Logs-Parser (github)
- rxwx/pulse-meter (github)
- pwniel/ivanti_shell (github)
Affected products and versions
- Ivanti: Connect Secure 9.0, Connect Secure 9.1, Connect Secure 22.1, Connect Secure 22.2, Connect Secure 22.3, Connect Secure 22.4, Connect Secure 22.5, Connect Secure 22.6, Policy Secure 9.0, Policy Secure 9.1, Policy Secure 22.1, Policy Secure 22.2, Policy Secure 22.3, Policy Secure 22.4, Policy Secure 22.5, Policy Secure 22.6
Showing 16 of 81 recorded product entries.
How to fix CVE-2024-21887
The record marks a vendor fix as available for CVE-2024-21887. Patch reference: https://forums.ivanti.com/s/article/CVE-2023-46805-Authentication-Bypass-CVE-2024-21887-Command-Injection-for-Ivanti-Connect-Secure-and-Ivanti-Policy-Secure-Gateways. Vendor advisory: https://forums.ivanti.com/s/article/CVE-2023-46805-Authentication-Bypass-CVE-2024-21887-Command-Injection-for-Ivanti-Connect-Secure-and-Ivanti-Policy-Secure-Gateways?language=en_US. Because CVE-2024-21887 is KEV-listed, US federal civilian agencies were required to apply the vendor fix, or stop using the product, by 2024-01-22. Apply the vendor fix referenced above to every affected product listed in this record, then confirm the running version against the vendor advisory.
Threat activity tracking CVE-2024-21887
12 tracked threats in the Threadlinqs corpus reference CVE-2024-21887, either in the campaign’s CVE list or as an indicator on the campaign record.
- Operation Escaneo: MexicanMafia (PanchoVilla) Intrusion Campaign Against Mexican Government Agencies and Latin American Financial Institutions — HIGH · 2026-10-23
- ARMORY CASTLE Zero-Day Exploitation of BeyondTrust Remote Support (CVE-2026-102764) with SAWFLY Webshell and BARECLAW Tunneler — CRITICAL · 2026-10-15
- FBI/DOJ Seize Microscan Vulnerability Scanner and FishHub Spear-Phishing Infrastructure Operated by China-Based Integrity Technology Group (Flax Typhoon-linked) — HIGH · 2026-10-09
- ClingSTUN Linux Backdoor Turns Unpatched IoT Devices Into Proxy Nodes via Public STUN Infrastructure — HIGH · 2026-10-05
- Cling IoT botnet masquerades as Google STUN traffic for C2, exploiting Realtek Jungle SDK CVE-2021-35394 — CRITICAL · 2026-10-03
- Nation-State Intrusions into Telecom Infrastructure via SS7, BGP Hijacking, and Router Compromise (Salt Typhoon) — HIGH · 2026-09-25
- DragonForce Ransomware Attack on RubberMill, Inc. — ~340GB Data Exfiltration Including PII, Credentials, CAD Files with Defense Mil-Spec References — CRITICAL · 2026-09-06
- Sen. Wyden Urges Binding Federal Mandate to Purge Internet-Facing Legacy VPNs for Zero-Trust Remote Access — MEDIUM · 2026-07-27
- APT35 (Charming Kitten) GCC Pre-Positioning Cyber Reconnaissance Campaign Enabling Kinetic Targeting — CRITICAL · 2026-04-09
- Storm-1175 Medusa Ransomware Zero-Day Exploitation Campaign (CVE-2026-23760, CVE-2025-10035) — CRITICAL · 2026-04-06
- BRICKSTORM Backdoor: UNC5221 PRC-Nexus APT Targeting VMware vSphere Infrastructure — CRITICAL · 2026-04-02
- Ivanti EPMM Pre-Auth Remote Code Execution (CVE-2026-1281 / CVE-2026-1340) — CRITICAL · 2026-01-29
Sources
Enriched from CVE.org, FIRST EPSS, CISA KEV, GitHub Security Advisories, public proof-of-concept repositories, ProjectDiscovery Nuclei. Last verified by Threadlinqs on .