CVE-2026-33904
MEDIUMElla Core has a Denial of Service via SCTP connection cleanup deadlock
Title source: cnaDescription
Ella Core is a 5G core designed for private networks. Prior to version 1.7.0, a deadlock in the AMF's SCTP notification handler causes the entire AMF control plane to hang until the process is restarted. An attacker with access to the N2 interface can cause Ella Core to hang, resulting in a denial of service for all subscribers. Version 1.7.0 adds deferred Radio cleanup in serveConn SCTP server so that every connection exit path removes the radio. Remove the stale-entry scan from SCTP Notification handling.
Scores
CVSS v3
6.5
EPSS
0.0002
EPSS Percentile
6.8%
Attack Vector
ADJACENT_NETWORK
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-833
Status
published
Products (3)
ellanetworks/core
0 - 1.7.0Go
ellanetworks/core
< 1.7.0
ellanetworks/ella_core
< 1.7.0
Published
Mar 27, 2026
Tracked Since
Mar 29, 2026