# Stack overflow in Ivanti gateways allows unauthenticated RCE

Published: 2026-06-09 · Severity: high · Sectors: government-national
Canonical: https://vorant.io/reports/88534857-1ef1-5be9-a4df-ba2c1ab3069e/stack-overflow-in-ivanti-gateways-allows-unauthenticated-rce

> Remote unauthenticated attackers can exploit a stack buffer overflow in Ivanti Connect Secure, Policy Secure, and ZTA Gateways for remote code execution; limited in-the-wild exploitation reported.

A stack-based buffer overflow vulnerability (CVE-2025-22457) affecting Ivanti Connect Secure, Policy Secure, and ZTA Gateways allows unauthenticated remote attackers to achieve remote code execution on vulnerable appliances. Ivanti has confirmed exploitation of Ivanti Connect Secure 22.7R2.5 or earlier and end-of-support Pulse Connect Secure 9.1x in a limited number of customer environments at the time of disclosure. Successful exploitation runs in system context, potentially enabling attackers to install programs, view, modify, or delete data depending on system privileges.

Affected versions include Pulse Connect Secure 9.1R18.9 and prior (end-of-support), Ivanti Connect Secure 22.7R2.5 and prior, Ivanti Policy Secure 22.7R1.3 and prior, and ZTA Gateways 22.8R2 and prior. Ivanti has released patched versions: Connect Secure 22.7R2.6, Policy Secure 22.7R1.4, and ZTA Gateways 22.8R2.2. The vulnerability is exploitable without authentication, making it immediately actionable for any organization running affected versions of these internet-facing security gateways.

## Mentioned in this report

- Vulnerabilities: CVE-2025-22457 (KEV)

Source reporting: https://www.cisecurity.org/advisory/a-vulnerability-in-ivanti-products-could-allow-for-remote-code-execution_2025-034

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