How severe is CVE-2026-33281?

CVE-2026-33281 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-2026-33281 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (31st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-33281?

CVE-2026-33281 affects Ellanetworks Ella Core. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-33281?

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

Does CVE-2026-33281 have an EU (EUVD) identifier?

Yes. CVE-2026-33281 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-14644.

When was CVE-2026-33281 published?

CVE-2026-33281 was published on 2026-03-24 and last updated on 2026-06-17.

CVE-2026-33281

CVE-2026-33281 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-129.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
EPSS exploit prediction: 0% (31st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-14644
Weakness: CWE-129
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 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.

Frequently asked questions

What is CVE-2026-33281?: 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.
How severe is CVE-2026-33281?: CVE-2026-33281 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-2026-33281 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (31st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-33281?: CVE-2026-33281 affects Ellanetworks Ella Core. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-33281?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-33281 have an EU (EUVD) identifier?: Yes. CVE-2026-33281 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-14644.
When was CVE-2026-33281 published?: CVE-2026-33281 was published on 2026-03-24 and last updated on 2026-06-17.

References

https://github.com/ellanetworks/core/security/advisories/GHSA-q669-4gmv-g8mf

Affected products (1)

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

More vulnerabilities in Ellanetworks Ella Core

CVE-2026-33282 — High (CVSS 7.5): Ella Core is a 5G core designed for private networks. Versions prior to 1.6.0 panic when processing a malformed NGAP…
CVE-2026-32319 — High (CVSS 7.5): Ella Core is a 5G core designed for private networks. Prior to 1.5.1, Ella Core panics when processing a malformed…
CVE-2026-33906 — High (CVSS 7.2): Ella Core is a 5G core designed for private networks. Prior to version 1.7.0, the NetworkManager role was granted…
CVE-2026-33907 — Medium (CVSS 6.5): Ella Core is a 5G core designed for private networks. Versions prior to 1.7.0 panic when processing Authentication…
CVE-2026-33904 — Medium (CVSS 6.5): Ella Core is a 5G core designed for private networks. Prior to version 1.7.0, a deadlock in the AMF's SCTP notification…
CVE-2026-33903 — Medium (CVSS 6.5): Ella Core is a 5G core designed for private networks. Versions prior to 1.7.0 panic when processing a specially crafted…

All CVEs affecting Ellanetworks Ella Core →

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