CVE-2026-33904
Medium
Description
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.
SeverityMedium
CVSS6.5
Exploit probability—
ProductEllanetworks Ella Core
PublishedMar 27, 2026
First seenMar 27, 2026
Weakness typeCWE-833CWE-833
How to fix
Update
- ellanetworks ella_core1.7.0 or later
- github.com/ellanetworks/core1.7.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| ellanetworks ella_core | v < 1.7.0 | 1.7.0 |
| github.com/ellanetworks/coreGo | v < 1.7.0 | 1.7.0 |
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