Description
A flaw has been found in Open5GS up to 2.7.7. The affected element is the function nssf_nnrf_nsselection_handle_get_from_amf_or_vnssf of the file /src/nssf/nnssf-handler.c of the component NSSF. Executing a manipulation can lead to denial of service. The attack can be executed remotely. The exploit has been published and may be used. The project was informed of the problem early through an issue report but has not responded yet.
References (5)
Core 5
Core References
Vdb Entry, Technical Description vdb-entry
technical-description
VDB-361907 | Open5GS NSSF nnssf-handler.c denial of service
https://vuldb.com/vuln/361907
Signature, Permissions Required signature
permissions-required
VDB-361907 | CTI Indicators (IOB, IOC, TTP, IOA)
https://vuldb.com/vuln/361907/cti
Third Party Advisory third-party-advisory
Submit #808421 | Open5gs NSSF v2.7.7 Denial of Service
https://vuldb.com/submit/808421
Exploit exploit
issue-tracking
https://github.com/open5gs/open5gs/issues/4432
Product product
https://github.com/open5gs/open5gs/
Scores
CVSS v3
4.3
EPSS
0.0037
EPSS Percentile
28.8%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
no
Technical Impact
partial
Details
CWE
CWE-404
Status
published
Products (9)
None/Open5GS
2.7.0
None/Open5GS
2.7.1
None/Open5GS
2.7.2
None/Open5GS
2.7.3
None/Open5GS
2.7.4
None/Open5GS
2.7.5
None/Open5GS
2.7.6
None/Open5GS
2.7.7
open5gs/open5gs
< 2.7.7
Published
May 08, 2026
Tracked Since
May 08, 2026