Background exploitation KEV catalog Ransomware No authentication

CVE-2025-22457

Ivanti Connect Secure, Policy Secure, and ZTA Gateways Stack-Based Buffer Overflow Vulnerability

A stack-based buffer overflow in Ivanti Connect Secure before version 22.7R2.6, Ivanti Policy Secure before version 22.7R1.4, and Ivanti ZTA Gateways before version 22.8R2.2 allows a remote unauthenticated attacker to achieve remote code…

CheckOps priority index

9.6/10 Patch within 24 h

Severity9.0

Probability10.0

Exploitation5/5

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

EPSS · today 99.98% higher than 99.98% of CVEs

CVSS 3.1 9.0 AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:

Exploited for 578 days 04 Apr 2025

CISA due date 11 Apr 2025 for US federal agencies

Exploitation probability EPSS · FIRST

EPSS probability (%)Percentile among all CVEs

Exploitation signals 5 / 5

KEV catalog (CISA)04 Apr 2025
Exploited in EUVD (ENISA)04 Apr 2025
Used by ransomwareyes
EPSS above 10 %99.98%
No account, over the networkyes

What to do

Fix

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

CISA guidance: Apply mitigations as set forth in the CISA instructions linked below.

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

Neurons for ZTA gatewaysConnect SecurePolicy SecureConnect Secure, Policy Secure, and ZTA Gateways

Affected versions

patch: 22.8R2.2
patch: 22.7R2.6
patch: 22.7R1.4

Weaknesses (CWE)

CWE-121

Open source packages OSV

Affected libraries according to OSV, with fixed versions.

Timeline

03 Apr 2025
Published
04 Apr 2025
Exploitation reported (ENISA)
04 Apr 2025
Added to the KEV catalog
11 Apr 2025
CISA remediation due date
25 Sept 2026
EPSS peak: 99.98%

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