How severe is CVE-2026-2523?

CVE-2026-2523 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.

Is CVE-2026-2523 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (40th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-2523?

CVE-2026-2523 affects Open5gs. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-2523?

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

Does CVE-2026-2523 have an EU (EUVD) identifier?

Yes. CVE-2026-2523 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-6136.

When was CVE-2026-2523 published?

CVE-2026-2523 was published on 2026-02-16 and last updated on 2026-06-17.

CVE-2026-2523

CVE-2026-2523 is a medium-severity vulnerability in Open5gs with a CVSS 3.x base score of 5.3. 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-617.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
CVSS v2: 5.0
CVSS v4: 5.5
EPSS exploit prediction: 1% (40th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-6136
Weakness: CWE-617
Affected product: Open5gs
Published: 2026-02-16
Last modified: 2026-06-17

Description

A vulnerability was detected in Open5GS up to 2.7.6. The affected element is the function smf_gn_handle_create_pdp_context_request of the file /src/smf/gn-handler.c of the component SMF. The manipulation results in reachable assertion. It is possible to launch the attack remotely. The exploit is now public and may be used. The project was informed of the problem early through an issue report but has not responded yet.

Frequently asked questions

What is CVE-2026-2523?: A vulnerability was detected in Open5GS up to 2.7.6. The affected element is the function smf_gn_handle_create_pdp_context_request of the file /src/smf/gn-handler.c of the component SMF. The manipulation results in reachable assertion. It is possible to launch the attack remotely. The exploit is now public and may be used. The project was informed of the problem early through an issue report but has not responded yet.
How severe is CVE-2026-2523?: CVE-2026-2523 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.
Is CVE-2026-2523 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (40th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-2523?: CVE-2026-2523 affects Open5gs. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-2523?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-2523 have an EU (EUVD) identifier?: Yes. CVE-2026-2523 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-6136.
When was CVE-2026-2523 published?: CVE-2026-2523 was published on 2026-02-16 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:open5gs:open5gs:*:*:*:*:*:*:*:*

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