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CVE-2024-21887

Exploitation: active CVSS 9.1 CRITICAL Ransomware: known use

CVSS base score: 9.1 (Critical) vendor CNA · v3.0

Score assigned by the vendor's own CVE Numbering Authority (CNA); CISA's Vulnrichment program adds a score only when the CNA omits one. Vulnrichment source record →

Ivanti Connect Secure and Policy Secure Command Injection Vulnerability

Vendor: Ivanti   Product: Connect Secure and Policy Secure

Description

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.

Research & News Coverage

No mentions found in monitored research blogs or news feeds.

Referenced in Advisories

DateAdvisoryIssuer
2025-08-27 Countering Chinese State-Sponsored Actors Compromise of Networks Worldwide to Feed Global Espionage System NSA
2025-08-27 Countering Chinese State-Sponsored Actors Compromise of Networks Worldwide to Feed Global Espionage System NSA
2025-08-27 CSA: Countering China State Actors Compromise of Networks NSA
2024-08-28 Iran-based Cyber Actors Enabling Ransomware Attacks on US Organizations CISA
2024-08-28 Iran-Based Cyber Actors Enabling Ransomware Attacks on U.S. Organizations FBI
2024-07-10 CISA and FBI Release Secure by Design Alert on Eliminating OS Command Injection Vulnerabilities CISA
2024-02-29 CISA and Partners Release Advisory on Threat Actors Exploiting Ivanti Connect Secure and Policy Secure Gateways Vulnerabilities CISA
2024-02-29 Threat Actors Exploit Multiple Vulnerabilities in Ivanti Connect Secure and Policy Secure Gateways CISA
2024-02-09 2024-004: Critical Vulnerabilities in Ivanti Connect Secure CERT-EU
2024-01-30 Updated: New Software Updates and Mitigations to Defend Against Exploitation of Ivanti Connect Secure and Policy Secure Gateways CISA
2024-01-10 Ivanti Releases Security Update for Connect Secure and Policy Secure Gateways CISA

Lifecycle Timeline

Each milestone comes from a different source, so gaps between them are gaps in what those sources publish, not evidence that nothing happened. EPSS history for this CVE holds 196 points from 2024-01-20, tracked daily from 2026-09-09; earlier points are weekly, which dates a spike to within a week. Peak probability 100.0% on 2026-06-20.

Published Applicability

CVE List v5 (CNA container) 4 affected · 0 fixed · 0 not affected

Check whether a specific version is affected →

What each source publishes about which product versions carry this vulnerability, kept as written rather than merged. Absence here means no source has published applicability data, not that nothing is affected.

Detection & Exploitation

Scan
Host / SIEM
none published

Coverage across public collections only: Nuclei and OpenVAS NVT (scan); Snort and Suricata ET Open (network); Sigma and YARA (host/SIEM); Metasploit, Exploit-DB, public GitHub repositories and NVD exploit references (exploit). Absence here means nothing public was found, not that detection is impossible.
GitHub PoC repositories are collected automatically by PoC-in-GitHub (CC0) and filtered to repositories that are still online, contain code, and are starred or at least two weeks old. They are still not vetted: some are fakes and some are malware. Treat them as evidence that code was published, not as code to run.
NVD exploit references are links NVD's analysts tag as exploits; they confirm an exploit was referenced but carry no date. This product uses data from the NVD but is not endorsed or certified by the NVD.
OpenVAS coverage derives from the Greenbone Community Feed, made available under the Open Database License (ODbL) v1.0; its individual Vulnerability Tests are licensed GNU GPL v2.

First seenToolEvidenceEarliest reference
2024-01-14 GitHub PoC Unvetted — public repository oways/ivanti-CVE-2024-21887 +7 more
2024-01-16 Metasploit Direct — curated exploit code Ivanti Connect Secure Unauthenticated Remote Code Execution +1 more

Metasploit is dated by the first commit of the module file, Exploit-DB by its publication date, and GitHub repositories by their creation date. GitHub PoC repositories are filtered (still online, contain code, starred or at least two weeks old) but not vetted: some are fakes and some are malware, so they show that code was published, not that it works or is safe to run. Evidence tiers are explained on the About page.

CISA Assessment (Vulnrichment / SSVC)

active
no
total
—
9.1 CRITICAL
CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
CWE-77 — Improper Neutralization of Special Elements used in a Command ('Command Injection')
2025-02-04

Federal Remediation Window (BOD 26-04)

Yes — added 2024-01-10
no
total control
If the asset isRemediate withinTable 1 row
Publicly exposed 3 days + forensic triage 3 of 16
Not publicly exposed 14 days 11 of 16

BOD 26-04 replaced the single KEV deadline of BOD 22-01 with four inputs: whether the asset is publicly exposed, KEV status, whether exploitation is automatable, and technical impact. Exposure belongs to each agency's asset, not to the CVE, so both outcomes are shown. Automatable and technical impact come from the CISA assessment above. Days are calendar days; for KEV entries the clock starts on the date it was added. Agencies make the final exposure call asset by asset, and may set shorter timelines.

D3FEND Countermeasures

Defensive techniques inferred by MITRE D3FEND from the underlying weakness (CWE-77) — general hardening and detection guidance for this weakness class, not a vendor patch for this specific CVE.

External References