---
title: "CVE-2024-21888: Ivanti ICS vulnerability"
url: https://erroneo.us/security/cve/CVE-2024-21888/
description: "CVE-2024-21888 (Ivanti ICS): A privilege escalation vulnerability in web component of Ivanti Connect Secure (9.x, 22.x) and Ivanti Policy Secure (9.x, 22.x)…"
type: vulnerability-record
section: "Security Digest"
date_published: 2024-01-31
date_modified: 2026-10-21
publisher: erroneo.us
author: erroneo.us Security Desk
cve: "CVE-2024-21888"
kev: false
cvss: 8.8
epss: 0.85418
license: All rights reserved. Quote with attribution and a link.
---

# CVE-2024-21888: Ivanti ICS vulnerability

**Signal:** High exploit likelihood. EPSS ranks it in the top 5% of all CVEs for likely exploitation in the next 30 days. (Computed from CISA KEV, EPSS and CVSS; not an editorial verdict.)

## Should you act?

- No confirmed exploitation. It is not in CISA’s KEV catalog and CISA’s SSVC assessment records no known exploitation. That can change quickly after a public write-up; re-check if you are affected.
- EPSS 85.4% , percentile 99.7: FIRST’s model estimates a 85.4% chance of exploitation activity in the next 30 days, higher than 99.7% of all scored CVEs (very high). EPSS is a probability, not a verdict.
- Needs an account (low (any account)). Exposure depends on who can log in.
- Editorial verdict: Act now. Ivanti Connect Secure Zero-Day Chain: Unauthenticated RCE — This chain was exploited as a zero-day by a suspected nation-state actor and then mass-exploited; any unpatched appliance should be assumed compromised, not just patched.

## What it is

A privilege escalation vulnerability in web component of Ivanti Connect Secure (9.x, 22.x) and Ivanti Policy Secure (9.x, 22.x) allows a user to elevate privileges to that of an administrator.

## Affected products (CVE record)

- Ivanti ICS: 9.1R18 <= 9.1R18, 22.6R2 <= 22.6R2
- Ivanti IPS: 9.1R18 <= 9.1R18, 22.6R1 <= 22.6R1

## Severity

- hackerone CVSS 3.0: 8.8 `CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`

## Exploitation

- CISA KEV: not listed (no confirmed in-the-wild exploitation known to CISA).
- CISA SSVC assessment: exploitation none , automatable no , technical impact total .
- FIRST EPSS (model of 2026-10-21): 85.42% probability of exploitation activity in the next 30 days; percentile 99.7.

## Sources

- [CVE.org record CVE-2024-21888](https://www.cve.org/CVERecord?id=CVE-2024-21888)
- [NVD entry CVE-2024-21888](https://nvd.nist.gov/vuln/detail/CVE-2024-21888)
- [forums.ivanti.com](https://forums.ivanti.com/s/article/CVE-2024-21888-Privilege-Escalation-for-Ivanti-Connect-Secure-and-Ivanti-Policy-Secure?language=en_US)

---
Source page: https://erroneo.us/security/cve/CVE-2024-21888/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt