CVE-2026-36499 Denial of service in n/a
An attacker with OVSDB write access can cause denial of service by requesting excessive threads due to a missing upper-bound check.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-36499?
CVE-2026-36499 is a medium-severity denial of service vulnerability in n/a, published on 4 Jun 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A missing upper-bound check in the udpif_set_threads() function of Open vSwitch v3.6.90 allows an attacker with OVSDB write access to request an excessive number of handler or revalidation threads. This can cause a denial of service (DoS) via resource exhaustion.
Weakness: CWE-770
Which versions are affected by CVE-2026-36499?
How do I fix CVE-2026-36499?
No fix has been published for CVE-2026-36499 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-36499 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-36499 exists.
Sources
Also known as DEBIAN-CVE-2026-36499, GHSA-87x4-f37w-27p2, UBUNTU-CVE-2026-36499.