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Description
Summary
Ella Core panics when processing NGAP messages with invalid PDU Session IDs outside of 1-15.
Impact
An attacker able to send crafted NGAP messages to Ella Core can crash the process, causing service disruption for all connected subscribers. No authentication is required.
Fix
Added PDU Session ID validations during NGAP message handling.
Basic information
Type
reviewed
Severity
medium Advisory on GitHub
Open advisory ↗ Repository advisory
Open repository advisory ↗ Source code
Browse source ↗ Published (advisory)
2026-03-19 17:47:01 UTC
Updated
2026-03-25 20:49:11 UTC
GitHub reviewed
2026-03-19 17:47:01 UTC
NVD published
2026-03-23
EPSS Score
Score
Percentile
0.02%
3.87%
CVSS Scores
Base score
Version
Severity
Vector
6.5
3.1
—
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
CWEs
CWE id
Name
CWE-129
Improper Validation of Array Index
Affected packages (1)
Vulnerable version ranges and first patched releases as published by GitHub.
Ecosystem
Package
Vulnerable range
First patched
Vulnerable functions
go
github.com/ellanetworks/core < 1.6.0
1.6.0
—
cvelogic
Threat Intelligence