What is the CVSS score of CVE-2026-1587?

CVE-2026-1587 has a CVSS 3.1 base score of 5.3 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L. EPSS exploitation probability: 0.1%.

Which versions of Open5gs are affected by CVE-2026-1587?

Organizations using Open5GS should be aware of moderate risk from CVE-2026-1587 rated CVSS 5.3. Exploitation could compromise the security of affected deployments.

Is there a public PoC exploit available for CVE-2026-1587?

Yes, a public proof-of-concept exploit is available for CVE-2026-1587. Prioritise patching immediately. EPSS: 0.1%.

How to fix or mitigate CVE-2026-1587?

Within 30 days: Identify affected systems running Open5GS and apply vendor patches as part of regular patch cycle. Monitor vendor channels for patch availability.

Open5gs CVE-2026-1587

MEDIUM

Improper Resource Shutdown or Release (CWE-404)

2026-01-29 cna@vuldb.com

Denial Of Service Open5gs

5.3

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

5.3 MEDIUM

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

Low

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 22:00 vuln.today

PoC Detected

Feb 23, 2026 - 09:16 vuln.today

Public exploit code

CVE Published

Jan 29, 2026 - 13:15 nvd

MEDIUM 5.3

DescriptionCVE.org

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.

AnalysisAI

Denial of service in Open5GS up to version 2.7.6 allows remote attackers to crash the SGWC service by manipulating the Modify Bearer Request handler in s11-handler.c. Public exploit code exists for this vulnerability and no patch is currently available. Organizations running affected versions should apply updates as they become available and consider network-level mitigations to restrict access to the S11 interface.

Technical ContextAI

Classified as CWE-404 (Improper Resource Shutdown or Release). Affects Open5Gs. 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.