CVE-2026-33281 json
Ella Core panics on invalid PDU Session IDs in NGAP messages
published 2026-03-19 7 mo ago modified 2026-06-17 4 mo ago also EUVD-2026-14644 , GHSA-q669-4gmv-g8mf , GO-2026-4783
- cvss
- 6.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 35%
- public exploits
- 0
- none known
Summary
Ella Core is a 5G core designed for private networks. Versions prior to 1.6.0 panic when processing NGAP messages with invalid PDU Session IDs outside of 1-15. 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. Version 1.6.0 added PDU Session ID validations during NGAP message handling.
Patch / fix
- go github.com/ellanetworks/core 1.6.0
- ellanetworks ella_core 1.6.0
- govulncheck-vulndb openSUSE Leap 15.6 0.0.20260326T203309-150000.1.155.2
suse advisories SUSE-SU-2026:1135-1
- govulncheck-vulndb openSUSE Leap 16.0 0.0.20260723T184607-160000.1.1
opensuse advisories openSUSE-SU-2026:21483-1
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 7 mo ago
Exploit prediction
0.41% chance of exploitation in the next 30 days, higher than 35% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
| GitHub | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
| NVD | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| go | github.com/ellanetworks/core | <1.6.0 |
1.6.0 |
Affected products
- ellanetworks core
Classification
- Weakness
-
- CWE-129 Improper Validation of Array Index
References
-
github.com
/ellanetworks/core/security/advisories/GHSA-q669-4gmv-g8mf
web, vendor-advisory, advisory
-
nvd.nist.gov
/vuln/detail/CVE-2026-33281
advisory
-
github.com
/ellanetworks/core
package
Sources
- CVE List CVE-2026-33281
- GitHub Advisory GHSA-q669-4gmv-g8mf
- NVD CVE-2026-33281
- OSV GO-2026-4783
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.