In short
- CVE-2026-33907 is a MEDIUM (CVSS 6.5) vulnerability affecting github.com/ellanetworks/core, ella core (ellanetworks).
- Chance of exploitation in the next 30 days (EPSS): 0.25%, higher than 16.1% of all vulnerabilities.
- Fix: update to 1.7.0 or later.
Description
Summary
Ella Core panics when processing Authentication Response and Authentication Failure NAS message missing IEs.
Impact
An attacker able to send crafted NAS messages to Ella Core can crash the process, causing service disruption for all connected subscribers. No authentication is required.
Fix
Added IE presence verification to NAS message handling.
NVD description
Ella Core is a 5G core designed for private networks. Versions prior to 1.7.0 panic when processing Authentication Response and Authentication Failure NAS message missing IEs. An attacker able to send crafted NAS messages to Ella Core can crash the process, causing service disruption for all connected subscribers. No authentication is required. Version 1.7.0 added IE presence verification to NAS message handling.
More vulnerabilities in github.com/ellanetworks/core
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