Vulnerability · Published May 27, 2026 · Assigned by GitHub_M

CVE-2026-44473Ella Core: UE Downlink Redirection via Forged PDUSessionResourceSetupResponse

High 7.1

In plain English

A high-severity incorrect authorization in core from ellanetworks. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 6% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.1High

Exploit odds (30 days)0.2%top 94.1% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

Ella Core is a 5G core designed for private networks. Prior to 1.10.0, a radio with a valid NG Setup can send a forged PDUSessionResourceSetupResponse carrying any UE's AMF-UE-NGAP-ID. Ella Core does not verify the message arrived on the SCTP association bound to that UE's logical NG-connection, then creates a GTP tunnel towards that radio. This vulnerability is fixed in 1.10.0.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Go	github.com/ellanetworks/core	1.10.0	GHSA-qfxw-v8qx-vj3v
Go	github.com/ellanetworks/core	1.10.0	GO-2026-5581

Affected products (as reported)

Vendor	Product	Versions
ellanetworks	core	< 1.10.0

Weakness: CWE-358, CWE-863 · Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H

References

https://github.com/ellanetworks/core/security/advisories/GHSA-qfxw-v8qx-vj3v x_refsource_CONFIRM