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

- Exploited (CISA KEV): yes, added 2025-04-04, known ransomware use
- Published: 2025-04-03
- CVSS: 9 CRITICAL (v3.1)
- EPSS: 100.0% (100th percentile)
- CWE: CWE-121

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.

## Edge WAF coverage (claimed by vendors, not measured)

| Vendor | Status | First rule | Days after publication |
|---|---|---|---|
| Cloudflare | Rule off by default | 2025-04-22 | 19 |
| AWS | No public claim | — | — |
| Microsoft Azure | No public claim | — | — |
| Google Cloud | No public claim | — | — |
| Fastly | Before feed history | — | — |
| F5 | Rule published | 2025-04-28 | 25 |
| Akamai | No public source | — | — |
| OWASP CRS | No public claim | — | — |

### Cloudflare

- 2025-04-22 · new · rule 5eb7ed601e6844828b9bdb05caa7b208 · default Disabled
  > Ivanti - Buffer Error - CVE:CVE-2025-22457. Previous action: Log. New action: Disabled. This is a New Detection
  Source: https://developers.cloudflare.com/changelog/post/2025-04-22-waf-release/

### F5

- 2025-04-28 · new · rule 200011100
  > Added: signature 200011100 "Ivanti Connect Secure Buffer Overflow (2)" (Buffer Overflow, risk High), systems: Other Web Server. References: CVE-2025-22457.
  Source: https://docs.cloud.f5.com/docs-v2/platform/changelogs/security-details-changelog
- 2025-05-22 · new · rule 200011100
  > Added: signature 200011100 "Ivanti Connect Secure Buffer Overflow (2)" (Buffer Overflow, risk High), systems: Other Web Server. References: CVE-2025-22457.
  Source: https://docs.cloud.f5.com/docs-v2/platform/changelogs/security-details-changelog

"No public claim" means no vendor statement names this CVE; "Before feed history" means the CVE is older than the vendor feed. In both cases generic rules may still block it.

HTML: https://cve.vigilbase.com/cve/CVE-2025-22457 · JSON: https://cve.vigilbase.com/api/v1/cves/CVE-2025-22457