CVE-2026-1976
Last modified
CVE-2026-1976 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. A weakness has been identified in Free5GC up to 4.1.0. Affected is the function SessionDeletionResponse of the component SMF. EPSS estimates a 0.53% chance of exploitation in the next 30 days.
Description
A weakness has been identified in Free5GC up to 4.1.0. Affected is the function SessionDeletionResponse of the component SMF. This manipulation causes null pointer dereference. The attack is possible to be carried out remotely. The exploit has been made available to the public and could be used for attacks. It is suggested to install a patch to address this issue.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/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
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Free5gc | Free5gc | <= 4.1.0 |
References
- https://github.com/free5gc/free5gc/issues/817Exploit, Issue Tracking, Vendor Advisory
- https://github.com/free5gc/free5gc/issues/817#issue-3832188092Exploit, Issue Tracking, Vendor Advisory
- https://github.com/free5gc/smf/pull/189Issue Tracking
- https://vuldb.com/?ctiid.344498Permissions Required, VDB Entry
- https://vuldb.com/?id.344498Third Party Advisory, VDB Entry
- https://vuldb.com/?submit.743239Exploit, Third Party Advisory, VDB Entry
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
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