Open5GS up to 2.7.6 HSS Service fd_msg_sess_get Session-Id denial of service

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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3.9$0-$5k2.94

Summaryinfo

A vulnerability marked as problematic has been reported in Open5GS up to 2.7.6. This affects the function fd_msg_sess_get of the component HSS Service. Performing a manipulation of the argument Session-Id results in denial of service. This vulnerability is cataloged as CVE-2025-15686. It is possible to initiate the attack remotely. Furthermore, there is an exploit available. The project locked and limited conversation to collaborators.

Detailsinfo

A vulnerability classified as problematic has been found in Open5GS up to 2.7.6. This affects the function fd_msg_sess_get of the component HSS Service. The manipulation of the argument Session-Id with an unknown input leads to a denial of service vulnerability. CWE is classifying the issue as CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. This is going to have an impact on availability.

It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2025-15686. The exploitability is told to be easy. It is possible to initiate the attack remotely. Technical details and a public exploit are known. The attack technique deployed by this issue is T1499 according to MITRE ATT&CK.

The exploit is shared for download at github.com. It is declared as proof-of-concept. The project locked and limited conversation to collaborators.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Name

Version

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: no mitigation known
Status: 🔍

0-Day Time: 🔒

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: 4190
Status: Not defined

CVE: CVE-2025-15686 (🔒)
GCVE (CVE): GCVE-0-2025-15686
GCVE (VulDB): GCVE-100-387279
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 08/09/2026 19:50
Changes: 08/09/2026 19:50 (58)
Complete: 🔍
Submitter: WeiYi
Cache ID: 216::103

Submitinfo

Accepted

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