Medium severity · published Aug 12, 2026
CVE-2025-15686
Open5GS HSS Service fd_msg_sess_get denial of service
4.3
CVSS
0.5%
EPSS
No
On KEV
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 vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
None
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 45% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
OP
Open5GS · Open5gs
2.7.0; 2.7.1; 2.7.2; 2.7.3; 2.7.4; 2.7.5; +1 more · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-15686
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-15686
github.com
https://github.com/open5gs/open5gs/
github.com
https://github.com/open5gs/open5gs/issues/4190
github.com
https://github.com/user-attachments/files/23847497/HSS_ULR_error_poc.pcapng.zip
vuldb.com
https://vuldb.com/cve/CVE-2025-15686
vuldb.com
https://vuldb.com/submit/867104
vuldb.com
https://vuldb.com/vuln/387279
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