CVE-2026-1521 | THREATINT

Description

A security flaw has been discovered in Open5GS up to 2.7.6. This affects the function sgwc_s5c_handle_bearer_resource_failure_indication of the file src/sgwc/s5c-handler.c of the component SGWC. Performing a manipulation results in denial of service. The attack can be initiated remotely. The exploit has been released to the public and may be used for attacks. The patch is named 69b53add90a9479d7960b822fc60601d659c328b. It is recommended to apply a patch to fix this issue.

PUBLISHED Reserved 2026-01-28 | Published 2026-01-28 | Updated 2026-02-23 | Assigner VulDB

MEDIUM: 6.9CVSS: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

MEDIUM: 5.3CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C

MEDIUM: 5.3CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C

5.0AV:N/AC:L/Au:N/C:N/I:N/A:P/E:POC/RL:OF/RC:C

Problem types

Denial of Service

Timeline

2026-01-28:	Advisory disclosed
2026-01-28:	VulDB entry created
2026-02-03:	VulDB entry last update

Credits

LinZiyu (VulDB User) reporter

References

vuldb.com/?id.343192 (VDB-343192 | Open5GS SGWC s5c-handler.c denial of service) vdb-entry technical-description

vuldb.com/?ctiid.343192 (VDB-343192 | CTI Indicators (IOB, IOC, TTP, IOA)) signature permissions-required

vuldb.com/?submit.738370 (Submit #738370 | Open5GS SGWC v2.7.6 Denial of Service) third-party-advisory

github.com/open5gs/open5gs/issues/4268 issue-tracking

github.com/open5gs/open5gs/issues/4268 exploit issue-tracking

github.com/...ommit/69b53add90a9479d7960b822fc60601d659c328b patch

github.com/open5gs/open5gs/ product

cve.org (CVE-2026-1521)

nvd.nist.gov (CVE-2026-1521)

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