Security Digest · Vulnerability record
CVE-2024-21888: Ivanti ICS vulnerability
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.
CVSS 8.8 High EPSS 85.4% · p99.7 Act now
Should you act?
High exploit likelihood
EPSS ranks it in the top 5% of all CVEs for likely exploitation in the next 30 days. This signal is computed from CISA KEV, EPSS and CVSS data; it is not an editorial verdict.
- 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.
Weakness type: CWE-269.
Product: Ivanti ICS · Assigned by: hackerone · Published: 2024-01-31
Affected and fixed versions
| Vendor | Product | Affected versions (per CVE record) |
|---|---|---|
| Ivanti | ICS | 9.1R18 <= 9.1R18, 22.6R2 <= 22.6R2 |
| Ivanti | IPS | 9.1R18 <= 9.1R18, 22.6R1 <= 22.6R1 |
Severity scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| hackerone | 3.0 | 8.8 High | CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
- Attack vector: network (remotely reachable)
- Attack complexity: low
- Privileges required: low (any account)
- User interaction: none
- Scope: unchanged
CVSS measures how bad a flaw is if exploited, not how likely exploitation is. Read it next to the exploitation data below.
Exploitation and urgency
- 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.
Timeline
- — erroneo.us brief: Ivanti Connect Secure Zero-Day Chain: Unauthenticated RCE
- — CVE record published by hackerone
- — CVE record last updated
Sources and references
Original sources first. Version and fix details should always be confirmed against the vendor or project advisory.
Vulnerability records
- CVE.org record CVE-2024-21888 cve.org
- NVD entry CVE-2024-21888 nvd.nist.gov
Other references from the CVE record and advisory
- forums.ivanti.com forums.ivanti.com