How severe is CVE-2026-33283?

CVE-2026-33283 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2026-33283 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (29th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-33283?

CVE-2026-33283 affects Ellanetworks Ella Core. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-33283?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-33283 have an EU (EUVD) identifier?

Yes. CVE-2026-33283 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-14647.

When was CVE-2026-33283 published?

CVE-2026-33283 was published on 2026-03-24 and last updated on 2026-06-17.

CVE-2026-33283

CVE-2026-33283 is a medium-severity vulnerability in Ellanetworks Ella Core with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-476.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
EPSS exploit prediction: 0% (29th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-14647
Weakness: CWE-476
Affected product: Ellanetworks Ella Core
Published: 2026-03-24
Last modified: 2026-06-17

Description

Ella Core is a 5G core designed for private networks. Versions prior to 1.6.0 panic when processing malformed UL NAS Transport NAS messages without a Request Type. 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 1.6.0 adds a guard when receiving an UL NAS Message without a Request Type given no SM Context.

Frequently asked questions

What is CVE-2026-33283?: Ella Core is a 5G core designed for private networks. Versions prior to 1.6.0 panic when processing malformed UL NAS Transport NAS messages without a Request Type. 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 1.6.0 adds a guard when receiving an UL NAS Message without a Request Type given no SM Context.
How severe is CVE-2026-33283?: CVE-2026-33283 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2026-33283 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (29th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-33283?: CVE-2026-33283 affects Ellanetworks Ella Core. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-33283?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-33283 have an EU (EUVD) identifier?: Yes. CVE-2026-33283 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-14647.
When was CVE-2026-33283 published?: CVE-2026-33283 was published on 2026-03-24 and last updated on 2026-06-17.

References

https://github.com/ellanetworks/core/security/advisories/GHSA-3366-gw57-fcm5

Affected products (1)

cpe:2.3:a:ellanetworks:ella_core:*:*:*:*:*:*:*:*

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