How severe is CVE-2026-2517?

CVE-2026-2517 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-2026-2517 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (39th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-2517?

CVE-2026-2517 affects Open5gs. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-2517?

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

Does CVE-2026-2517 have an EU (EUVD) identifier?

Yes. CVE-2026-2517 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-5828.

When was CVE-2026-2517 published?

CVE-2026-2517 was published on 2026-02-15 and last updated on 2026-06-17.

CVE-2026-2517

CVE-2026-2517 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-404.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
CVSS v2: 5.0
CVSS v4: 5.5
EPSS exploit prediction: 0% (39th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-5828
Weakness: CWE-404
Affected product: Open5gs
Published: 2026-02-15
Last modified: 2026-06-17

Description

A security flaw has been discovered in Open5GS up to 2.7.6. This vulnerability affects the function ogs_gtp2_parse_tft in the library lib/gtp/v2/types.c of the component SMF. Performing a manipulation of the argument pf[0].content.length results in denial of service. The attack is possible to be carried out remotely. The exploit has been released to the public and may be used for attacks. The project was informed of the problem early through an issue report but has not responded yet.

Frequently asked questions

What is CVE-2026-2517?: A security flaw has been discovered in Open5GS up to 2.7.6. This vulnerability affects the function ogs_gtp2_parse_tft in the library lib/gtp/v2/types.c of the component SMF. Performing a manipulation of the argument pf[0].content.length results in denial of service. The attack is possible to be carried out remotely. The exploit has been released to the public and may be used for attacks. The project was informed of the problem early through an issue report but has not responded yet.
How severe is CVE-2026-2517?: CVE-2026-2517 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-2026-2517 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (39th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-2517?: CVE-2026-2517 affects Open5gs. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-2517?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-2517 have an EU (EUVD) identifier?: Yes. CVE-2026-2517 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-5828.
When was CVE-2026-2517 published?: CVE-2026-2517 was published on 2026-02-15 and last updated on 2026-06-17.

References

Affected products (1)

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

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