CVE-2026-1736 Details
Description
A security vulnerability has been detected in Open5GS up to 2.7.6. Impacted is the function sgwc_s11_handle_create_indirect_data_forwarding_tunnel_request of the file /src/sgwc/s11-handler.c of the component SGWC. Such manipulation leads to reachable assertion. The attack may be launched remotely. The exploit has been disclosed publicly and may be used. A patch should be applied to remediate this issue. The issue report is flagged as already-fixed.
A denial-of-service vulnerability has been identified in Open5GS versions through 2.7.6, specifically within the SGWC component. The issue arises in the function responsible for handling Create Indirect Data Forwarding Tunnel requests, where an assertion failure can be triggered by a malformed PDN Address Allocation in a Create Session Response. This vulnerability allows for remote exploitation, causing the SGWC process to crash and terminate, which disrupts service availability.
Users are advised to update to the latest version of Open5GS, where this vulnerability has been fixed.
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 Feb 2, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/open5gs/open5gs/ | [email protected] | Product |
| https://github.com/open5gs/open5gs/issues/4270 | [email protected] | ExploitIssue TrackingVendor Advisory |
| https://github.com/open5gs/open5gs/issues/4270#event-21968624624 | [email protected] | Issue Tracking |
| https://github.com/open5gs/open5gs/issues/4270#issue-3795141303 | [email protected] | ExploitIssue TrackingVendor Advisory |
| https://vuldb.com/?ctiid.343635 | [email protected] | Permissions RequiredVDB Entry |
| https://vuldb.com/?id.343635 | [email protected] | Third Party AdvisoryVDB Entry |
| https://vuldb.com/?submit.741191 | [email protected] | Third Party AdvisoryVDB Entry |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-617 | Reachable Assertion | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| open5gs open5gs | <= 2.7.6 |
CPE
Remediation
| |
Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Feb 11, 2026 | Initial Analysis | [email protected] |
| Feb 2, 2026 | New CVE Received | [email protected] |