CVE-2025-22457
Ivanti — Ivanti Connect Secure, Policy Secure, and ZTA Gateways Stack-Based Buffer Overflow Vulnerability
Ivanti · CWE-121 — Stack-based buffer overflow | CWE-787 — Out-of-bounds write · in CISA KEV since 2025-04-04
EVRS 95 of 100 Immediate
Out-of-Band / Urgent Remediation
Rank 4 of 2,960 tracked
Why it scores 95
Evidence available: 6 of 7 signalsListed in the CISA KEV catalog, and associated with known ransomware campaigns.
- CISA KEVApplied
- RansomwareApplied
- Vendor exploitationDid not apply
- EPSSApplied
- Microsoft Exploitability IndexNot applicable
- Pre-patch disclosureNo data
- KEV recencyDid not apply
- CVSSApplied
The band answers “how soon”, not “how bad”. No data for: Pre-patch disclosure. Why some signals show no data
Fix
Patch or fixed version identifiedCISA required action
Fixed in
connect secure: update to 22.7 or later | policy secure: update to 22.7 or later | zero trust access gateway: update to 22.8 or later
Affected versions
- connect secure
< 22.722.7 - policy secure
< 22.722.7 - zero trust access gateway
< 22.822.8
Remediation
Apply mitigations as set forth in the CISA instructions linked below.
Fixed versions from NVD.
Evidence
Each value with its source| Measure | Value | Source |
|---|---|---|
| CVSS base scoreHow severe the flaw is in itself. It does not say how likely an attack is. | 9.8 | NVD |
| FIRST EPSSFIRST's estimate of the chance this is exploited in the next 30 days, and how that ranks against all CVEs. | 0.999 (99.98th pctl) | FIRST EPSS |
| Actively exploitedWhether a source of record has confirmed attacks using it in the wild. | Confirmed | CISA KEV |
| Ransomware campaign useWhether CISA has seen ransomware operators use it. | Known | CISA KEV |
| CISA remediation deadlineThe date US federal agencies must have fixed or mitigated it. | 2025-04-11 · KEV since 2025 · listed over a year | CISA KEV |
| Public exploit moduleA module existing is not the same as active exploitation. | Public module exists | Metasploit |
| EUVD cross-referenceENISA's record: CVSS 9.0 (v3.1), assigned by ivanti. | Listed | ENISA EUVD |
Description
NVDA 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.
What CISA says to do
Public module
Metasploit lists a public great-rank module for this CVE: Ivanti Connect Secure Unauthenticated Remote Code Execution via Stack-based Buffer Overflow (linux/http/ivanti_connect_secure_stack_overflow_rce_cve_2025_22457). A module existing is not the same as active exploitation; see metasploit.com.