CVE-2025-15686
Open5GS HSS Service fd_msg_sess_get denial of service
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.
INFO
Published Date :
Aug. 12, 2026, 3:16 a.m.
Last Modified :
Aug. 12, 2026, 3:16 a.m.
Remotely Exploit :
Yes !
Source :
[email protected]
Affected Products
The following products are affected by CVE-2025-15686
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 2.0 | MEDIUM | [email protected] | ||||
| CVSS 3.1 | MEDIUM | [email protected] | ||||
| CVSS 4.0 | LOW | [email protected] |
Solution
- Update Open5GS to version 2.7.7 or later.
- Apply vendor-supplied patches for Open5GS.
- Restrict access to the HSS Service component.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2025-15686.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2025-15686 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2025-15686
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2025-15686 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2025-15686 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
New CVE Received by [email protected]
Aug. 12, 2026
Action Type Old Value New Value Added Affected [{'cpes': ['cpe:2.3:a:open5gs:open5gs:*:*:*:*:*:*:*:*'], 'vendor': 'n/a', 'modules': ['HSS Service'], 'product': 'Open5GS', 'versions': [{'status': 'affected', 'version': '2.7.0'}, {'status': 'affected', 'version': '2.7.1'}, {'status': 'affected', 'version': '2.7.2'}, {'status': 'affected', 'version': '2.7.3'}, {'status': 'affected', 'version': '2.7.4'}, {'status': 'affected', 'version': '2.7.5'}, {'status': 'affected', 'version': '2.7.6'}]}] Added 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. Added CVSS V4.0 AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L Added CVSS V2 (AV:N/AC:L/Au:S/C:N/I:N/A:P) Added CWE CWE-404 Added Reference https://github.com/open5gs/open5gs/ Added Reference https://github.com/open5gs/open5gs/issues/4190 Added Reference https://github.com/user-attachments/files/23847497/HSS_ULR_error_poc.pcapng.zip Added Reference https://vuldb.com/cve/CVE-2025-15686 Added Reference https://vuldb.com/submit/867104 Added Reference https://vuldb.com/vuln/387279 Added Reference https://vuldb.com/vuln/387279/cti