CVE-2026-1522 Details
Description
A weakness has been identified in Open5GS up to 2.7.6. This vulnerability affects the function sgwc_s5c_handle_modify_bearer_response of the file src/sgwc/s5c-handler.c of the component SGWC. Executing a manipulation can lead to denial of service. The attack can be launched remotely. The exploit has been made available to the public and could be used for attacks. This patch is called b19cf6a. Applying a patch is advised to resolve 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 'sgwc_s5c_handle_modify_bearer_response' function of 'src/sgwc/s5c-handler.c'. When a 'ModifyBearerResponse' is received on the S5-C interface after the corresponding S11 transaction has timed out, the absence of a valid S11 transaction causes the application to crash. This vulnerability can be exploited remotely, leading to a process abort and a core dump, which disrupts service.
Users are advised to update to Open5GS version 2.7.7 or later, 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 Jan 28, 2026References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/open5gs/open5gs/ | [email protected] | |
| https://github.com/open5gs/open5gs/commit/b19cf6a | [email protected] | Patch |
| https://github.com/open5gs/open5gs/issues/4266 | [email protected] | ExploitIssue TrackingPatchVendor Advisory |
| https://github.com/open5gs/open5gs/issues/4266#event-21968568116 | [email protected] | ExploitIssue TrackingPatch |
| https://github.com/open5gs/open5gs/issues/4266#issue-3794991595 | [email protected] | ExploitIssue TrackingPatchVendor Advisory |
| https://vuldb.com/?ctiid.343193 | [email protected] | Permissions RequiredVDB Entry |
| https://vuldb.com/?id.343193 | [email protected] | Third Party AdvisoryVDB Entry |
| https://vuldb.com/?submit.738371 | [email protected] | ExploitThird Party AdvisoryVDB Entry |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-404 | Improper Resource Shutdown or Release | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| open5gs open5gs | <= 2.7.6 |
CPE
Remediation
| |
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 |
| Feb 23, 2026 | CVE Modified | [email protected] |
| Feb 2, 2026 | Initial Analysis | [email protected] |
| Jan 28, 2026 | New CVE Received | [email protected] |