Background exploitation KEV catalog Ransomware No authentication

CVE-2024-21893

Ivanti Connect Secure, Policy Secure, and Neurons Server-Side Request Forgery (SSRF) Vulnerability

A server-side request forgery vulnerability in the SAML component of Ivanti Connect Secure (9.x, 22.x) and Ivanti Policy Secure (9.x, 22.x) and Ivanti Neurons for ZTA allows an attacker to access certain restricted resources without…

CheckOps priority index

9.3/10 Patch within 24 h

Severity8.2

Probability10.0

Exploitation5/5

Severity = CVSS. Probability = EPSS (FIRST). Exploitation = public signals: KEV, EUVD, ransomware, EPSS above 10 %, no account required.

EPSS · today 100.00% higher than 100.00% of CVEs

CVSS 3.0 8.2 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:

Exploited for 1,007 days 31 Jan 2024

CISA due date 02 Feb 2024 for US federal agencies

Exploitation probability EPSS · FIRST

EPSS probability (%)Percentile among all CVEs

Exploitation signals 5 / 5

KEV catalog (CISA)31 Jan 2024
Exploited in EUVD (ENISA)31 Jan 2024
Used by ransomwareyes
EPSS above 10 %100.00%
No account, over the networkyes

What to do

Fix

Apply the vendor’s fix as soon as it is available.

CISA guidance: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Meanwhile

Take the service off the internet or restrict access to it, watch the logs and look for signs of compromise.

Manufacturers (CRA)

Exploited vulnerability in your product: early warning to ENISA within 24 h, then notification within 72 h (Article 14 of the Cyber Resilience Act). The CRA explained

Description ENISA EUVD

Affected products

ICSIPSConnect Secure, Policy Secure, and Neurons

Affected versions

9.1R18 ≤9.1R18
22.6R2 ≤22.6R2
22.6R1 ≤22.6R1

Weaknesses (CWE)

CWE-918

Open source packages OSV

Affected libraries according to OSV, with fixed versions.

Timeline

31 Jan 2024
Published
31 Jan 2024
Exploitation reported (ENISA)
31 Jan 2024
Added to the KEV catalog
02 Feb 2024
CISA remediation due date
26 Sept 2026
EPSS peak: 100.00%

References

Other exploited vulnerabilities from the same vendor

CVE-2026-118527Ivanti Connect Secure Generation of Predictable Numbers or Identifiers Vulnerability
1.0 · Rising fast
CVE-2026-111357Ivanti Connect Secure Missing Authentication for Critical Function Vulnerability
4.0 · Rising fast
CVE-2026-104935Ivanti Connect Secure Authentication Bypass by Spoofing Vulnerability
8.4 · Rising fast
CVE-2026-10520Ivanti Sentry OS Command Injection Vulnerability
9.4 · Actively exploited
CVE-2026-6973Ivanti Endpoint Manager Mobile (EPMM) Improper Input Validation Vulnerability
5.7 · Actively exploited
CVE-2026-1603Ivanti Endpoint Manager (EPM) Authentication Bypass Vulnerability
8.5 · Background exploitation