CVE-2024-21894 Memory corruption in Connect Secure
Unauthenticated attackers can trigger a heap overflow in Ivanti Connect Secure and Policy Secure, causing service crashes or arbitrary code execution.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2024-21894?
CVE-2024-21894 is a high-severity memory corruption vulnerability in Ivanti Connect Secure, published on 4 Apr 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A heap overflow vulnerability in IPSec component of Ivanti Connect Secure (9.x, 22.x) and Ivanti Policy Secure allows an unauthenticated malicious user to send specially crafted requests in-order-to crash the service thereby causing a DoS attack. In certain conditions this may lead to execution of arbitrary code
Which versions are affected by CVE-2024-21894?
It affects 2 products.
Products include Ivanti Connect Secure, Ivanti Policy Secure.
How do I fix CVE-2024-21894?
No fix has been published for CVE-2024-21894 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2024-21894 being exploited?
There is no known exploitation of CVE-2024-21894 in the wild and no public exploit code.
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-3mvj-7p7p-x4x5.