Open5GS up to 2.7.6 SMF Diameter Gx Credit-Control-Answer smf_gx_cca_cb denial of service

CVSS Meta Temp Score
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CTI Interest Score
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3.9$0-$5k1.78

Summaryinfo

A vulnerability, which was classified as problematic, has been found in Open5GS up to 2.7.6. The affected element is the function smf_gx_cca_cb of the component SMF Diameter Gx Credit-Control-Answer Handler. This manipulation causes denial of service. This vulnerability appears as CVE-2025-15687. The attack may be initiated remotely. In addition, an exploit is available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability has been found in Open5GS up to 2.7.6 and classified as problematic. Affected by this vulnerability is the function smf_gx_cca_cb of the component SMF Diameter Gx Credit-Control-Answer Handler. The manipulation with an unknown input leads to a denial of service vulnerability. The CWE definition for the vulnerability is CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. As an impact it is known to affect availability.

It is possible to read the advisory at github.com. This vulnerability is known as CVE-2025-15687. The exploitation appears to be easy. The attack can be launched remotely. Technical details and also a public exploit are known. The attack technique deployed by this issue is T1499 according to MITRE ATT&CK.

It is possible to download the exploit at github.com. It is declared as proof-of-concept.

Upgrading to version 2.7.7 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch f23d7a5e959acd8f37b925dc29b85f26b7d391cb is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.3
VulDB Meta Temp Score: 3.9

VulDB Base Score: 4.3
VulDB Temp Score: 3.9
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Denial of service
CWE: CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Open5GS 2.7.7
Patch: f23d7a5e959acd8f37b925dc29b85f26b7d391cb

Timelineinfo

08/09/2026 Advisory disclosed
08/09/2026 +0 days VulDB entry created
08/09/2026 +0 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: 4027
Status: Confirmed
Confirmation: 🔒

CVE: CVE-2025-15687 (🔒)
GCVE (CVE): GCVE-0-2025-15687
GCVE (VulDB): GCVE-100-387283
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 08/09/2026 19:55
Changes: 08/09/2026 19:55 (62)
Complete: 🔍
Submitter: WeiYi
Cache ID: 216::103

Submitinfo

Accepted

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