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.

Metrics

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact Low

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact Low

User Interaction None

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact Low

User Interaction None

Access Vector Network

Access Complexity Low

Authentication None

Confidentiality Impact None

Integrity Impact None

Availability Impact Partial

This CVE is not in the KEV list.

Exploitation poc

Automatable yes

Technical Impact partial

Affected Vendors & Products

Vendors Products
Open5gs
  • Open5gs

No data.

No data.

References
Link Providers
https://github.com/open5gs/open5gs/commit/69b53add90a9479d7960b822fc60601d659c328b cve-icon cve-icon
https://github.com/open5gs/open5gs/issues/4268 cve-icon cve-icon
https://github.com/open5gs/open5gs/issues/4268#event-21989483261 cve-icon cve-icon
https://github.com/open5gs/open5gs/issues/4268#issue-3795012861 cve-icon cve-icon
https://vuldb.com/?ctiid.343192 cve-icon cve-icon
https://vuldb.com/?id.343192 cve-icon cve-icon
https://vuldb.com/?submit.738370 cve-icon cve-icon
History

Thu, 29 Jan 2026 10:15:00 +0000

Type Values Removed Values Added
First Time appeared Open5gs
Open5gs open5gs
Vendors & Products Open5gs
Open5gs open5gs

Wed, 28 Jan 2026 17:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Wed, 28 Jan 2026 15:00:00 +0000

Type Values Removed Values Added
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.
Title Open5GS SGWC s5c-handler.c denial of service
Weaknesses CWE-404
References
Metrics cvssV2_0

{'score': 5, 'vector': 'AV:N/AC:L/Au:N/C:N/I:N/A:P/E:POC/RL:OF/RC:C'}

cvssV3_0

{'score': 5.3, 'vector': 'CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C'}

cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C'}

cvssV4_0

{'score': 6.9, 'vector': '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'}
cve-icon MITRE

Status: PUBLISHED

Assigner: VulDB

Published: 2026-01-28T14:32:10.348Z

Updated: 2026-01-28T16:12:00.256Z

Reserved: 2026-01-28T10:11:36.410Z

Link: CVE-2026-1521

cve-icon Vulnrichment

Updated: 2026-01-28T16:11:17.484Z

cve-icon NVD

Status : Undergoing Analysis

Published: 2026-01-28T15:16:17.493

Modified: 2026-01-29T16:31:00.867

Link: CVE-2026-1521

cve-icon Redhat

No data.