CVE-2026-34761
MediumCVSS 5.8Exploitation Probability (EPSS)
Low risk24th percentile - higher than 24% of all known CVEs
Summary
Ella Core, a 5G core for private networks, prior to version 1.8.0 panics when processing a NGAP handover failure message. An attacker can send such messages via gNodeB, causing service disruption for all connected subscribers.
Risk Assessment
The vulnerability leads to a complete denial of service (DoS) in the 5G network, potentially paralyzing communication in the private network.
Recommendation
Immediately update Ella Core to version 1.8.0 or later, which contains the fix.
Other vulnerabilities in Ella Core
See all- CVE-2026-44473High
Ella Core, designed for private 5G networks, prior to version 1.10.0, allowed a radio with a valid NG Setup to send forged PDUSessionResourceSetupResponse messages. The system did not verify if the message arrived over the correct NG connection, leading to the creation of a GTP tunnel towards that radio.
- CVE-2026-34762Low
In Ella Core prior to version 1.8.0, the PUT /api/v1/subscriber/{imsi} API does not verify that the IMSI from the URL path matches the IMSI from the JSON request body. An authenticated NetworkManager can modify any subscriber's policy while the audit trail records a fabricated IMSI. This is fixed in version 1.8.0.
Original NVD description (English source)
Ella Core is a 5G core designed for private networks. Prior to version 1.8.0, Ella Core panics when processing a NGAP handover failure message. An attacker able to cause a gNodeB to send NGAP handover failure messages to Ella Core can crash the process, causing service disruption for all connected subscribers. This issue has been patched in version 1.8.0.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS