Exploited CVEs / Ivanti / CVE-2024-21887
CVE-2024-21887
Ivanti Connect Secure and Policy Secure Command Injection Vulnerability. Exploitation in the wild is confirmed by CISA, not predicted, and the vulnerability is known to be used in ransomware campaigns. Federal agencies were required to remediate by 2024-01-22 (that deadline has passed); treat that date as the outer bound for your own environment. The fix is in the vendor advisory: Ivanti Security Advisories, linked below.
Actively exploited Ivanti Connect Secure and Policy Secure vulnerability, Critical severity, CVSS 9.1. Added to the CISA KEV catalog 2024-01-10.
Risk summary
Updated July 26, 2026. Data refreshed on every build from MSRC, CISA KEV, and FIRST EPSS.
Senserva AI Opinion for CVE-2024-21887
One half of the Ivanti zero-day pair that opened 2024: a command injection in the web components of Connect Secure and Policy Secure that, chained with the CVE-2023-46805 authentication bypass, gave unauthenticated attackers code execution on VPN appliances at scale. The campaign compromised government and enterprise gateways worldwide before patches existed, and ransomware use followed. CVSS 9.1, EPSS 100 percent, KEV since January 10, 2024.
Do this: If any Ivanti Connect Secure appliance ran exposed in early 2024, verify it was factory reset and rebuilt on patched firmware, not merely updated in place.
AI-generated from public data, 2026-07-07. Verify against the vendor advisory before acting.
Senserva AI Opinion and rich prompt for CVE-2024-21887
Copy this prompt into Claude, ChatGPT, or Copilot. The facts are included, sourced from this page.
Full tracking and change history for CVE-2024-21887
Published and last-revised dates are authoritative, from Microsoft MSRC (or the CISA KEV date-added). Senserva additionally records day-to-day changes from 2026-07-07, refreshed several times a day; the change count reflects that forward-only tracking.
CISA required action
Federal (BOD 22-01) remediation due date: 2024-01-22 (past due).
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Official fix for CVE-2024-21887
The authoritative fix and affected-version list are published by the vendor. Find the Connect Secure and Policy Secure advisory on Ivanti Security Advisories.
Common questions about CVE-2024-21887
Is CVE-2024-21887 actively exploited?
Yes. CVE-2024-21887 was added to the CISA Known Exploited Vulnerabilities (KEV) catalog on 2024-01-10, which means exploitation in the wild has been confirmed, not predicted. Its EPSS 30-day exploitation probability is 100%. CISA also reports it is known to be used in ransomware campaigns.
What is the CISA deadline and required action for CVE-2024-21887?
CISA set the federal (BOD 22-01) remediation due date at 2024-01-22, which has passed; treat any unremediated system as overdue. The verbatim required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
What fixes CVE-2024-21887?
The authoritative fix is in the vendor advisory: see Ivanti Security Advisories for the patched Connect Secure and Policy Secure versions and any workarounds. KEV listing makes this a fix-first item: patch it ahead of higher-CVSS issues nobody is exploiting.
Can I ask my own AI about CVE-2024-21887?
Yes. This page includes a free, ready-to-paste AI prompt containing CVE-2024-21887's key facts: severity, CVSS, EPSS, the KEV date, the CISA due date, and the required action. Copy it into Claude, ChatGPT, or Copilot; the data is refreshed twice a day (5 AM and 3 PM US Central).
More exploited Ivanti CVEs
The newest Ivanti entries on the CISA KEV catalog:
All Ivanti exploited CVEs on one page: Ivanti vulnerabilities actively exploited.
Authoritative references
Every actively exploited CVE, searchable with due dates and CSV export: the exploited-CVE tracker. The newest additions: exploited this week.
