#VU106969 Stack-based buffer overflow in Ivanti Connect Secure (formerly Pulse Connect Secure) - CVE-2025-22457

Vulnerability identifier: #VU106969

Vulnerability risk: Critical

CVSSv4.0: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:A/U:Red]

CVE-ID: CVE-2025-22457

CWE-ID: CWE-121

Exploitation vector: Network

Exploit availability: Yes

Vulnerable software:
Ivanti Connect Secure (formerly Pulse Connect Secure)
Server applications / Remote access servers, VPN

Vendor: Ivanti

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error when handling network requests. A remote unauthenticated attacker can send specially crafted packets to the device, trigger a stack-based buffer overflow and execute arbitrary code on the target system.

Note, the vulnerability is being actively exploited in the wild.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Ivanti Connect Secure (formerly Pulse Connect Secure): 9.0R1 - 22.7R2.5

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External links
https://www.ivanti.com/blog/security-update-pulse-connect-secure-ivanti-connect-secure-policy-secure-and-neurons-for-zta-gateways
https://forums.ivanti.com/s/article/April-Security-Advisory-Ivanti-Connect-Secure-Policy-Secure-ZTA-Gateways-CVE-2025-22457

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

Yes. This vulnerability is being exploited in the wild.