CVE-2026-33907 json
Ella Core Panics during NAS Authentication Response/Failure with missing IEs
published 7mo ago modified 14d ago also EUVD-2026-16845 , GHSA-55q8-2gwx-29pc , GO-2026-4872
- cvss
- 6.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 16%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- go github.com/ellanetworks/core 1.7.0
- ellanetworks ella_core 1.7.0
- govulncheck-vulndb openSUSE Leap 15.6 0.0.20260402T184258-150000.1.158.1
suse advisories SUSE-SU-2026:1205-1
- govulncheck-vulndb openSUSE Leap 16.0 0.0.20260723T184607-160000.1.1
opensuse advisories openSUSE-SU-2026:21483-1
Is CVE-2026-33907 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 7mo ago
Exploit prediction
0.25% chance of exploitation in the next 30 days, higher than 16% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 6.5 | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| GitHub | 3.1 | 6.5 | CVSS:3.1/AV:A/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 | <1.7.0 |
1.7.0 |
Affected products
- ellanetworks core
Classification
- Weakness
-
- CWE-476 NULL Pointer Dereference
References
-
github.com
/ellanetworks/core/commit/52962660e3bd3e23c7e96b0da270ac1e0e705273
web, patch
-
github.com
/ellanetworks/core/security/advisories/GHSA-55q8-2gwx-29pc
web, vendor-advisory, advisory
-
github.com
/ellanetworks/core/releases/tag/v1.7.0
web, release-notes
-
nvd.nist.gov
/vuln/detail/CVE-2026-33907
advisory
-
github.com
/ellanetworks/core
package
Sources
- CVE List CVE-2026-33907
- GitHub Advisory GHSA-55q8-2gwx-29pc
- NVD CVE-2026-33907
- OSV GO-2026-4872
Fencer Intel 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.