CVE-2025-22457: Ivanti Connect Secure, Policy Secure, and ZTA Gateways Stack-Based Buffer Overflow Vulnerability
Vulnerability summary
CVE-2025-22457 is a critical (CVSS 9.8) Stack-based Buffer Overflow vulnerability in Ivanti Connect Secure, Policy Secure, and ZTA Gateways. It is known to be exploited: CISA and ENISA list it, first on 04-04-2025. It has been used in ransomware campaigns. EPSS estimates a 99.98% chance of exploitation in the next 30 days, higher than 99.9% of scored vulnerabilities. 1 public exploit is recorded.
Timeline
- 03-04-2025PublishedVulnerability first disclosed.
- 04-04-2025Added to CISA KEVIvanti Connect Secure, Policy Secure, and ZTA Gateways Stack-Based Buffer Overflow Vulnerability
- 11-04-2025CISA remediation dueApply mitigations as set forth in the CISA instructions linked below.
- 08-04-2026Added to ENISA KEVAdded to the ENISA known exploited vulnerabilities catalog.
- 04-08-2026Last modifiedVulnerability information updated.
Description
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.
CVSS metrics
2 scores · 2 sources · 1 version- CVE.orgCNA9.0CriticalCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:HDiffers
EPSS trend
Probability
99.98%
Chance of exploitation in the next 30 days
Percentile
100%
Versus all other CVEs
30-day change
0.00 pp
From 99.98% on 21-09-2026
Known exploited
Compare KEV catalogs
CISA KEVListed- Added
- 04-04-2025
- Federal due date
- 11-04-2025
ENISA CNWListed- Added
- 08-04-2026
CISA required action
Apply mitigations as set forth in the CISA instructions linked below. nvd.nist.gov/vuln/detail/CVE-2025-22457
Public exploits
1 foundIvanti Connect Secure Unauthenticated Remote Code Execution via Stack-based Buffer Overflow
exploit/linux/http/ivanti_connect_secure_stack_overflow_rce_cve_2025_22457
Maturity: weaponized
Weaknesses
CWE · root cause- CWE-121Stack-based Buffer OverflowA stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).
- CWE-787Out-of-bounds WriteThe product writes data past the end, or before the beginning, of the intended buffer.
Affected systems
Ivanti3 products
- connect_secure< 22.7 | 22.7 | 22.7:r1 | 22.7:r1.1 | 22.7:r1.2 | 22.7:r1.3 | 22.7:r1.4 | 22.7:r1.5 | 22.7:r2 | 22.7:r2.1 | 22.7:r2.2 | 22.7:r2.3 | 22.7:r2.4 | 22.7:r2.5
- policy_secure< 22.7 | 22.7 | 22.7:r1 | 22.7:r1.1 | 22.7:r1.2 | 22.7:r1.3
- zero_trust_access_gateway< 22.8 | 22.8 | 22.8:r2.1
1 vendor · 3 products
References
2 links- forums.ivanti.com/s/…Vendor Advisory
- www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-22457Government ResourceUS Government Resource