CVE-2026-90823 Memory corruption in IPVPN
Unauthenticated remote attackers can execute arbitrary code as root via a stack buffer overflow in the management interface, which requires manual enablement.
- 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-2026-90823?
CVE-2026-90823 is a critical memory corruption vulnerability in FatPipe Networks IPVPN, published on 17 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
FatPipe MPVPN, WARP, and IPVPN appliances running the end-of-life firmware version 10.1.2r60p100 contain a stack-based buffer overflow in /usr/sbin/auth_user_pass. An unauthenticated remote attacker with access to the affected management interface can submit a crafted authentication request that reaches an unchecked copy into a fixed-size stack buffer, potentially allowing arbitrary code execution as root.
The affected management interface is disabled by default and must be affirmatively enabled by the customer before the endpoint becomes reachable. FatPipe recommends restricting management access to trusted administrative networks and using WAN access control lists to limit access to trusted sources.
Customers running the affected end-of-life firmware can contact FatPipe Support for help confirming their firmware version and upgrading to a current supported release at https://www.fatpipeinc.com/support/support, [email protected], or +1 800-724-8521 (option 3).
Weakness: CWE-121
Which versions are affected by CVE-2026-90823?
How do I fix CVE-2026-90823?
No fix has been published for CVE-2026-90823 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-2026-90823 being exploited?
There is no known exploitation of CVE-2026-90823 in the wild and no public exploit code.
Sources
Also known as GHSA-32q2-w7qg-44p8.