How severe is CVE-2026-2522?

CVE-2026-2522 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-2026-2522 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (46th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-2522?

CVE-2026-2522 affects Open5gs. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-2522?

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

Does CVE-2026-2522 have an EU (EUVD) identifier?

Yes. CVE-2026-2522 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-6139.

When was CVE-2026-2522 published?

CVE-2026-2522 was published on 2026-02-16 and last updated on 2026-06-17.

CVE-2026-2522

CVE-2026-2522 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-119.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
CVSS v2: 5.0
CVSS v4: 5.5
EPSS exploit prediction: 1% (46th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-6139
Weakness: CWE-119
Affected product: Open5gs
Published: 2026-02-16
Last modified: 2026-06-17

Description

A security vulnerability has been detected in Open5GS up to 2.7.6. Impacted is an unknown function of the file /src/mme/esm-build.c of the component MME. The manipulation leads to memory corruption. It is possible to initiate the attack remotely. The exploit has been disclosed publicly 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-2026-2522?: A security vulnerability has been detected in Open5GS up to 2.7.6. Impacted is an unknown function of the file /src/mme/esm-build.c of the component MME. The manipulation leads to memory corruption. It is possible to initiate the attack remotely. The exploit has been disclosed publicly 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-2026-2522?: CVE-2026-2522 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-2026-2522 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (46th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-2522?: CVE-2026-2522 affects Open5gs. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-2522?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-2522 have an EU (EUVD) identifier?: Yes. CVE-2026-2522 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-6139.
When was CVE-2026-2522 published?: CVE-2026-2522 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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