CVE-2026-33904 json
Ella Core has a Denial of Service via SCTP connection cleanup deadlock
published 2026-03-26 7 mo ago modified 2026-10-26 13 d ago also EUVD-2026-16841 , GHSA-9h59-p45g-445h , GO-2026-4874
- 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 6%
- public exploits
- 0
- none known
Summary
Ella Core is a 5G core designed for private networks. Prior to version 1.7.0, a deadlock in the AMF's SCTP notification handler causes the entire AMF control plane to hang until the process is restarted. An attacker with access to the N2 interface can cause Ella Core to hang, resulting in a denial of service for all subscribers. Version 1.7.0 adds deferred Radio cleanup in serveConn SCTP server so that every connection exit path removes the radio. Remove the stale-entry scan from SCTP Notification 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
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 7 mo ago
Exploit prediction
0.17% chance of exploitation in the next 30 days, higher than 6% 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: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-833 Deadlock
References
-
github.com
/ellanetworks/core/commit/999f606c5cae261471d9e3f063d7ecd1bd754076
web, patch
-
github.com
/ellanetworks/core/security/advisories/GHSA-9h59-p45g-445h
web, vendor-advisory, advisory
-
github.com
/ellanetworks/core/releases/tag/v1.7.0
web, release-notes
-
nvd.nist.gov
/vuln/detail/CVE-2026-33904
advisory
-
github.com
/ellanetworks/core
package
Sources
- CVE List CVE-2026-33904
- GitHub Advisory GHSA-9h59-p45g-445h
- NVD CVE-2026-33904
- OSV GO-2026-4874
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.