CVE-2025-15686: Denial of Service in Open5GS
A vulnerability has been found in Open5GS up to 2.7.6. Affected by this issue is the function fd_msg_sess_get of the component HSS Service. Such manipulation of the argument Session-Id leads to denial of service. The attack may be performed from remote. The exploit has been disclosed to the public and may be used. The project locked and limited conversation to collaborators.
AI Analysis
Technical Summary
This vulnerability in Open5GS up to version 2.7.6 involves improper handling of the Session-Id argument in the fd_msg_sess_get function of the HSS Service component. An attacker can remotely manipulate this argument to trigger a denial of service condition, disrupting service availability. The vulnerability has a CVSS 4.0 base score of 5.3, indicating medium severity. Although exploit code has been publicly disclosed, there is no vendor advisory or patch information available at this time.
Potential Impact
Successful exploitation results in denial of service, impacting the availability of the Open5GS HSS Service. The attack can be performed remotely without authentication or user interaction, potentially causing service disruption to affected deployments.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, consider implementing network-level protections to restrict access to the vulnerable service and monitor for unusual Session-Id manipulations if possible.
CVE-2025-15686: Denial of Service in Open5GS
Description
A vulnerability has been found in Open5GS up to 2.7.6. Affected by this issue is the function fd_msg_sess_get of the component HSS Service. Such manipulation of the argument Session-Id leads to denial of service. The attack may be performed from remote. The exploit has been disclosed to the public and may be used. The project locked and limited conversation to collaborators.
CVSS v4.0
Score 5.3medium
Affected software
Open5GS
pkg:github/open5gs/open5gscpe:2.3:a:open5gs:open5gs:*:*:*:*:*:*:*:*Run on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability in Open5GS up to version 2.7.6 involves improper handling of the Session-Id argument in the fd_msg_sess_get function of the HSS Service component. An attacker can remotely manipulate this argument to trigger a denial of service condition, disrupting service availability. The vulnerability has a CVSS 4.0 base score of 5.3, indicating medium severity. Although exploit code has been publicly disclosed, there is no vendor advisory or patch information available at this time.
Potential Impact
Successful exploitation results in denial of service, impacting the availability of the Open5GS HSS Service. The attack can be performed remotely without authentication or user interaction, potentially causing service disruption to affected deployments.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, consider implementing network-level protections to restrict access to the vulnerable service and monitor for unusual Session-Id manipulations if possible.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulDB
- Date Reserved
- 2026-08-09T17:45:29.753Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6a7bdd68bf8831d539d5ca0e
Added to database: 08/12/2026, 02:41:44 UTC
Last enriched: 08/12/2026, 03:01:13 UTC
Last updated: 09/25/2026, 01:47:38 UTC
Views: 57
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.