CVE-2025-24946 Denial of service in picoquic
Remote attackers can cause server CPU exhaustion via Hash DoS by exploiting a weak hash function in the connection management table.
- 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-2025-24946?
CVE-2025-24946 is a medium-severity denial of service vulnerability in privateoctopus picoquic, published on 20 Feb 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The hash table used to manage connections in picoquic before b80fd3f uses a weak hash function, allowing remote attackers to cause a considerable CPU load on the server (a Hash DoS attack) by initiating connections with colliding Source Connection IDs (SCIDs).
Weakness: CWE-407
Which versions are affected by CVE-2025-24946?
How do I fix CVE-2025-24946?
No fix has been published for CVE-2025-24946 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-2025-24946 being exploited?
There is no known exploitation of CVE-2025-24946 in the wild and no public exploit code.
Sources
Also known as GHSA-m6hh-vp2v-rm5m.