CVE-2025-15687

MEDIUM 4.3

Open5GS SMF Diameter Gx Credit-Control-Answer smf_gx_cca_cb denial of service

CVSS Score

4.3

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-404
Vendor	n/a
Product	open5gs
Published	Aug 12, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

n/a / Open5GS

2.7.0 2.7.1 2.7.2 2.7.3 2.7.4 2.7.5 2.7.6

References

NVD ↗ CVE.org ↗ EPSS Data ↗

vuldb.com: https://vuldb.com/vuln/387283 vuldb.com: https://vuldb.com/vuln/387283/cti vuldb.com: https://vuldb.com/cve/CVE-2025-15687 vuldb.com: https://vuldb.com/submit/867119 github.com: https://github.com/open5gs/open5gs/issues/4027 github.com: https://github.com/open5gs/open5gs/pull/4034 github.com: https://github.com/user-attachments/files/21515527/SMF.crashes.zip github.com: https://github.com/open5gs/open5gs/commit/f23d7a5e959acd8f37b925dc29b85f26b7d391cb github.com: https://github.com/open5gs/open5gs/releases/tag/v2.7.7 github.com: https://github.com/open5gs/open5gs/

Credits

🔍 WeiYi (VulDB User)