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Known exploited vulnerability · CISA KEV

CVE-2025-22457: Ivanti Connect Secure, Policy Secure, and ZTA Gateways Stack-Based Buffer Overflow Vulnerability

Ivanti Connect Secure, Policy Secure, and ZTA Gateways contains a stack-based buffer overflow vulnerability that allows a remote unauthenticated attacker to achieve remote code execution.

CVE-2025-22457

Exploited in the wild. Fix this first.

CISA added it to the Known Exploited Vulnerabilities catalog on 2025-04-04: attackers are using it right now. It is known to be used in ransomware campaigns.

CISA KEV
Listed
Added 2025-04-04 · federal fix-by 2025-04-11
EPSS (30 days)
over 99.9%
Higher than 99.9% of CVEs · 2026-11-01
CVSS v3.1
9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

What CISA says

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

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

NVD description · published 2025-04-03

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 execution.

Full record on NVD

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How to check if you are exposed to CVE-2025-22457

  1. Find every Ivanti Connect Secure, Policy Secure, and ZTA Gateways system you or your clients run, including ones exposed to the internet. Those come first: CISA only lists flaws attackers are already using.
  2. Compare each version with the fixed versions in the vendor advisory below. Where no fix exists yet, apply the vendor’s mitigation or take the system off the internet.
  3. Run a credentialed vulnerability scan to catch the systems you missed, then check that the next scan no longer reports CVE-2025-22457.

US federal agencies had to fix this by 2025-04-11. Everyone else should treat that deadline as a guide: if it has passed, this is overdue.

Affected versions

Versions the National Vulnerability Database lists as vulnerable to CVE-2025-22457. Check the vendor advisory for the exact fixed builds before you sign anything off.

ProductVulnerable versions
Ivanti Connect Securebefore 22.7; 22.7; 22.7-r1; 22.7-r1.1; 22.7-r1.2; 22.7-r1.3 and 8 more
Ivanti Policy Securebefore 22.7; 22.7; 22.7-r1; 22.7-r1.1; 22.7-r1.2; 22.7-r1.3
Ivanti Zero Trust Access Gatewaybefore 22.8; 22.8; 22.8-r2.1

Timeline

  1. · Published in the National Vulnerability Database
  2. · Added to CISA's Known Exploited Vulnerabilities catalog, 1 day after it was published
  3. · Fix-by date for US federal agencies, passed 569 days ago

Vendor advisories and fixes

Weakness type

More exploited Ivanti vulnerabilities

CISA lists 38 exploited Ivanti vulnerabilities. The closest matches:

Keep going

Sources: CISA Known Exploited Vulnerabilities catalog (version 2026.10.30); EPSS data from FIRST.org; CVSS and descriptions from the NIST National Vulnerability Database. Checked 2026-11-01. This product uses the NVD API but is not endorsed or certified by the NVD.

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