CVE-2026-2517: Open5GS SMF types.c ogs_gtp2_parse_tft denial of service

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.6% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2026-02-15 · updated 2026-06-17
Weakness: CWE-404

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.

Affected products

Open5GS: through 2.7.6

References

https://github.com/open5gs/open5gs/
https://github.com/open5gs/open5gs/issues/4281
https://github.com/open5gs/open5gs/issues/4281#issue-3807802287
https://vuldb.com/?ctiid.346108
https://vuldb.com/?id.346108
https://vuldb.com/?submit.738332

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