CVE-2025-15686
Open5GS HSS Service fd_msg_sess_get denial of service
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- Low
Exploit likelihood
What each source reports
CVE List Score used
Open5GS HSS Service fd_msg_sess_get denial of service
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.
- Record
CVE-2025-15686- CVSS 4.0
- 5.3 Medium
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P - CVSS 3.1
- 4.3 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R - CVSS 3.0
- 4.3 Medium
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R - CVSS 2.0
- 4.0
AV:N/AC:L/Au:S/C:N/I:N/A:P/E:POC/RL:ND/RC:UR - Weakness
- CWE-404
- Updated
- 2026-11-02
EUVDEUVD-2025-210703
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.
- Record
EUVD-2025-210703- CVSS 4.0
- 5.3 Medium
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-hwwm-2gq7-f4rr
A vulnerability has been found in Open5GS up to 2.7.6. Affected by this issue is the function...
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.
- Record
GHSA-hwwm-2gq7-f4rr- CVSS 4.0
- 2.1 Low
CVSS:4.0/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 - CVSS 3.1
- 4.3 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L - Weakness
- CWE-404
- Updated
- 2026-11-02
NVD
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.
- Record
CVE-2025-15686- CVSS 4.0
- 2.1 Low
CVSS:4.0/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 - CVSS 3.1
- 4.3 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L - CVSS 2.0
- 4.0 Medium
AV:N/AC:L/Au:S/C:N/I:N/A:P - Weakness
- CWE-404
- Updated
- 2026-11-02
OSV
Open5GS HSS Service fd_msg_sess_get denial of service
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.
- Record
CVE-2025-15686- CVSS 4.0
- 2.1 Low
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P - Weakness
- CWE-404
- Updated
- 2026-11-02
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2025-15686 is a medium vulnerability (CVSS 5.3), published August 12, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.53%, the 45th percentile. No source names a fixed version.