CVE-2025-15539CWE-404

Open5GS sgwc s11-handler.c sgwc_s11_handle_downlink_data_notification_ack denial of service

Medium · published January 18, 2026

CVSS v4.0
6.9
EPSS
1%
Percentile
54.2
In the wild
Unconfirmed
What it is

A vulnerability was determined in Open5GS up to 2.7.6. Impacted is the function sgwc_s11_handle_downlink_data_notification_ack of the file src/sgwc/s11-handler.c of the component sgwc. This manipulation causes denial of service. The attack can be initiated remotely. The exploit has been publicly disclosed and may be utilized. Patch name: b4707272c1caf6a7d4dca905694ea55557a0545f. To fix this issue, it is recommended to deploy a patch. The issue report is flagged as already-fixed.

The record
Technical detail
CVSS v4.0
6.9 · MEDIUM
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
EPSS
0.00743 · 54.2th percentile
Weakness
CWE-404 · Improper Resource Shutdown or Release
Published
2026-01-18T23:32Z
EPSS history
Timeline
  • 18 JAN 23:32Z
    Open5GS sgwc s11-handler.c sgwc_s11_handle_downlink_data_notification_ack denial of service
    cvelistv5