CVE-2026-8120 Details
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.
A denial-of-service vulnerability has been identified in Open5GS versions through 2.7.7, specifically within the NSSF component. The issue arises in the function 'nssf_nnrf_nsselection_handle_get_from_amf_or_vnssf' in 'nnssf-handler.c'. When a client sends a request that includes 'home-plmn-id' and 'homeSnssai' slice information, and the local NSSF configuration lacks a serving PLMN ID, the NSSF process crashes. This occurs because the handler asserts that at least one serving PLMN is configured before processing the request, leading to an assertion failure and process termination. The vulnerability can be exploited remotely, causing a crash of the NSSF service.
Metrics
CVSS 4.0 Severity and Vector Strings:
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed May 8, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://vuldb.com/submit/808421 | CISA-ADP | ExploitThird Party AdvisoryVDB Entry |
| https://github.com/open5gs/open5gs/ | [email protected] | Product |
| https://github.com/open5gs/open5gs/issues/4432 | [email protected] | ExploitIssue Tracking |
| https://vuldb.com/submit/808421 | [email protected] | ExploitThird Party AdvisoryVDB Entry |
| https://vuldb.com/vuln/361907 | [email protected] | Third Party AdvisoryVDB Entry |
| https://vuldb.com/vuln/361907/cti | [email protected] | Permissions RequiredVDB Entry |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-404 | Improper Resource Shutdown or Release | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| open5gs open5gs | <= 2.7.7 |
CPE
Remediation
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Change History
5 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| May 11, 2026 | Initial Analysis | [email protected] |
| May 8, 2026 | CVE Modified | CISA-ADP |
| May 8, 2026 | New CVE Received | [email protected] |