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Description

A vulnerability has been found in Open5GS up to 2.7.6. The affected element is the function sgwc_s11_handle_modify_bearer_request of the file /sgwc/s11-handler.c of the component SGWC. The manipulation leads to denial of service. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. Applying a patch is the recommended action to fix this issue. The issue report is flagged as already-fixed.

PUBLISHED Reserved 2026-01-29 | Published 2026-01-29 | Updated 2026-01-29 | 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

2026-01-29:Advisory disclosed
2026-01-29:VulDB entry created
2026-01-29:VulDB entry last update

Credits

FrankyLin (VulDB User) reporter

References

vuldb.com/?id.343350 (VDB-343350 | Open5GS SGWC s11-handler.c sgwc_s11_handle_modify_bearer_request denial of service) vdb-entry technical-description

vuldb.com/?ctiid.343350 (VDB-343350 | CTI Indicators (IOB, IOC, TTP, IOA)) signature permissions-required

vuldb.com/?submit.738376 (Submit #738376 | Open5GS SGWC v2.7.6 Denial of Service) third-party-advisory

github.com/open5gs/open5gs/issues/4272 issue-tracking

github.com/open5gs/open5gs/issues/4272 issue-tracking

github.com/open5gs/open5gs/issues/4272 exploit issue-tracking

cve.org (CVE-2026-1587)

nvd.nist.gov (CVE-2026-1587)

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