Remote unauthenticated code execution in Ivanti Connect Secure

1) Stack-based buffer overflow

EUVDB-ID: #VU106969

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 - Stack-based buffer overflow

Exploit availability: No

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

CPE2.3

• cpe:2.3:a:ivanti:pulse_connect_secure:9.0R1:*:*:*:*:*:*:*
• cpe:2.3:a:ivanti:pulse_connect_secure:9.0R2:*:*:*:*:*:*:*
• cpe:2.3:a:ivanti:pulse_connect_secure:9.0R2.1:*:*:*:*:*:*:*

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

Q & A

Can this vulnerability be exploited remotely?

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

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

Yes. This vulnerability is being exploited in the wild.