CVE-2021-22894 Ivanti Pulse Connect Secure Collaboration Suite Buffer Overflow
Remote authenticated attackers can execute arbitrary code as root via a buffer overflow in Pulse Connect Secure meeting rooms.
- Exploited in the wild
- Since 3 Nov 2021
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-22894?
CVE-2021-22894 is a high-severity memory corruption vulnerability in Ivanti Connect Secure, published on 27 May 2021. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A buffer overflow vulnerability exists in Pulse Connect Secure before 9.1R11.4 allows a remote authenticated attacker to execute arbitrary code as the root user via maliciously crafted meeting room.
Which versions are affected by CVE-2021-22894?
It affects 1 product.
Products include Ivanti Connect Secure.
How do I fix CVE-2021-22894?
No fix has been published for CVE-2021-22894 yet. Limit exposure of the affected software until one is available. US federal agencies must fix it by 3 May 2022.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2021-22894 being exploited?
Yes. Attackers have exploited CVE-2021-22894 in the wild since at least 3 Nov 2021.
Other vulnerabilities in Ivanti Connect Secure
- CVE-2021-22893 Ivanti Pulse Connect Secure Use-After-Free
- CVE-2019-11510 Ivanti Pulse Connect Secure Arbitrary File Read
- CVE-2024-21887 Ivanti Connect Secure and Policy Secure Command Injection
- CVE-2025-22457 Ivanti Connect Secure, Policy Secure, and ZTA Gateways Stack-Based Buffer Overflow
- CVE-2025-0282 Ivanti Connect Secure, Policy Secure, and ZTA Gateways Stack-Based Buffer Overflow
Sources
Also known as GHSA-2f6h-jr2m-2vpj.