Skip to content

Ella Core Panics during NAS Authentication Response/Failure with missing IEs

Moderate severity GitHub Reviewed Published Mar 24, 2026 in ellanetworks/core • Updated Mar 27, 2026

Package

gomod github.com/ellanetworks/core (Go)

Affected versions

< 1.7.0

Patched versions

1.7.0

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.

References

@gruyaume gruyaume published to ellanetworks/core Mar 24, 2026
Published to the GitHub Advisory Database Mar 26, 2026
Reviewed Mar 26, 2026
Published by the National Vulnerability Database Mar 27, 2026
Last updated Mar 27, 2026

Severity

Moderate

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Adjacent
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS score

Exploit Prediction Scoring System (EPSS)

This score estimates the probability of this vulnerability being exploited within the next 30 days. Data provided by FIRST.
(7th percentile)

Weaknesses

NULL Pointer Dereference

The product dereferences a pointer that it expects to be valid but is NULL. Learn more on MITRE.

CVE ID

CVE-2026-33907

GHSA ID

GHSA-55q8-2gwx-29pc

Source code

Credits

Loading Checking history
See something to contribute? Suggest improvements for this vulnerability.