How severe is CVE-2026-33907?

CVE-2026-33907 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2026-33907 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (14th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-33907?

CVE-2026-33907 affects Ellanetworks Ella Core. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-33907?

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

Does CVE-2026-33907 have an EU (EUVD) identifier?

Yes. CVE-2026-33907 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-16845.

When was CVE-2026-33907 published?

CVE-2026-33907 was published on 2026-03-27 and last updated on 2026-06-17.

CVE-2026-33907

CVE-2026-33907 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% (14th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-16845
Weakness: CWE-476
Affected product: Ellanetworks Ella Core
Published: 2026-03-27
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2026-33907?: 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.
How severe is CVE-2026-33907?: CVE-2026-33907 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2026-33907 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (14th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-33907?: CVE-2026-33907 affects Ellanetworks Ella Core. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-33907?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-33907 have an EU (EUVD) identifier?: Yes. CVE-2026-33907 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-16845.
When was CVE-2026-33907 published?: CVE-2026-33907 was published on 2026-03-27 and last updated on 2026-06-17.

References

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-2026-33904 — 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…
CVE-2026-33283 — Medium (CVSS 6.5): Ella Core is a 5G core designed for private networks. Versions prior to 1.6.0 panic when processing malformed UL NAS…

All CVEs affecting Ellanetworks Ella Core →

Other CWE-476 (NULL Pointer Dereference) vulnerabilities

CVE-2022-36648 — Critical (CVSS 10.0): The hardware emulation in the of_dpa_cmd_add_l2_flood of rocker device model in QEMU, as used in 7.0.0 and earlier,…
CVE-2020-14500 — Critical (CVSS 10.0): Secomea GateManager all versions prior to 9.2c, An attacker can send a negative value and overwrite arbitrary data.
CVE-2010-2495 — Critical (CVSS 10.0): The pppol2tp_xmit function in drivers/net/pppol2tp.c in the L2TP implementation in the Linux kernel before 2.6.34 does…
CVE-2026-46195 — Critical (CVSS 9.8): In the Linux kernel, the following vulnerability has been resolved: smb: client: validate dacloffset before building…
CVE-2026-31657 — Critical (CVSS 9.8): In the Linux kernel, the following vulnerability has been resolved: batman-adv: hold claim backbone gateways by…
CVE-2026-31436 — Critical (CVSS 9.8): In the Linux kernel, the following vulnerability has been resolved: dmaengine: idxd: fix possible wrong descriptor…

Browse all CWE-476 (NULL Pointer Dereference) vulnerabilities →