Description
OvenMediaEngine through 0.21.0 contains a denial of service vulnerability in OvtPacket::LoadHeader() that allows unauthenticated attackers to stall connections by sending payload_length values above 32750. Attackers can send crafted OVT packets to the OVT listener to hold connections open indefinitely and accumulate buffered memory, disrupting origin-to-edge stream relay.
References7
- github.com/OvenMediaLabs/OvenMediaEngine
- github.com/OvenMediaLabs/OvenMediaEngine/blob/v0.21.0/src/modul…
- github.com/OvenMediaLabs/OvenMediaEngine/blob/v0.21.0/src/modul…
- github.com/OvenMediaLabs/OvenMediaEngine/commit/ce316146d668a93…
- github.com/OvenMediaLabs/OvenMediaEngine/issues/2330
- www.vulncheck.com/advisories/ovenmediaengine-through-0.21.0-ovt…
- github.com/OvenMediaLabs/OvenMediaEngine/issues/2330
Metrics
- CVSS 3.1
-
7.5
HIGH
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - CVSS 4.0
-
8.7
HIGH
Score source: CNA
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - EPSS — exploit probability
- 1% percentile: 44 · as of 4 November 2026
- CWE
- CWE-770
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.