CVE-2025-15687

2.1 lowEPSS 0.6%

Low (2.1). EPSS 0.6% chance of exploitation in the next 30 days.

A security flaw has been discovered in Open5GS up to 2.7.6. Impacted is the function smf_gx_cca_cb of the component SMF Diameter Gx Credit-Control-Answer Handler. The manipulation results in denial of service. The attack can be launched remotely. The exploit has been released to the public and may be used for attacks. Upgrading to version 2.7.7 is recommended to address this issue. The patch is identified as f23d7a5e959acd8f37b925dc29b85f26b7d391cb. Upgrading the affected component is advised.

Severity

CVSS 4.0

2.1 low

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P

CVSS 3.1

4.3 medium

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

EPSS: 0.6% chance of exploitation in the next 30 days; higher than 50% of CVEs (scores of 2026-10-31)
CWE: CWE-404
Published: 2026-08-12
Modified: 2026-09-29
Record from: the NVD, synced 2026-10-19

References

https://github.com/open5gs/open5gs/
https://github.com/open5gs/open5gs/commit/f23d7a5e959acd8f37b925dc29b85f26b7d391cb
https://github.com/open5gs/open5gs/issues/4027
https://github.com/open5gs/open5gs/pull/4034
https://github.com/open5gs/open5gs/releases/tag/v2.7.7

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