CVE-2025-22457: in the CISA KEV catalogue
Ivanti Connect Secure, Policy Secure, and ZTA Gateways Stack-Based Buffer Overflow Vulnerability. CISA added CVE-2025-22457 to the Known Exploited Vulnerabilities catalogue on 2025-04-04 with a default due date of 2025-04-11. Known ransomware campaign use: Known. Forensic triage flag: No.
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. (CISA description)
- Vendor / product
- Ivanti Connect Secure, Policy Secure, and ZTA Gateways
- CWE
- CWE-121
- CISA required action
- Apply mitigations as set forth in the CISA instructions linked below.
- EPSS
- 100%, percentile 99 (scored 2026-11-03)
EPSS puts nearly every time in 100 odds (100%) on exploitation activity being observed in the next 30 days. Its score is higher than or equal to that of 99% of scored CVEs. This is a model estimate about exploitation anywhere, not about your environment.
Vendor and reference links (from CISA)
Your own deadline under CISA BOD 26-04 depends on exposure, automatability and technical impact: work it out with the BOD 26-04 calculator.
Frequently asked questions
Is CVE-2025-22457 in the CISA KEV catalogue?
Yes. CISA added CVE-2025-22457 (Ivanti Connect Secure, Policy Secure, and ZTA Gateways Stack-Based Buffer Overflow Vulnerability) to the Known Exploited Vulnerabilities catalogue on 2025-04-04. CISA's default due date for it is 2025-04-11.
Is CVE-2025-22457 used in ransomware attacks?
CISA marks known ransomware campaign use as Known for CVE-2025-22457.
What should I do about CVE-2025-22457?
CISA's required action: Apply mitigations as set forth in the CISA instructions linked below.
Sources
- CISA, Known Exploited Vulnerabilities Catalog (accessed 2026-11-03)
- FIRST, Exploit Prediction Scoring System (EPSS) (EPSS by FIRST; scores generated by Empirical Security)
- NVD record for CVE-2025-22457