CVE-2025-15539

MEDIUM

open5gs < 2.7.6 - Denial of Service in sgwc_s11_handle_downlink_data_notification_ack

Title source: llm
STIX 2.1

Description

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.

References (7)

Core 7
Core References
Third Party Advisory, VDB Entry vdb-entry technical-description
https://vuldb.com/?id.341732
Permissions Required, VDB Entry signature permissions-required
https://vuldb.com/?ctiid.341732
Third Party Advisory, VDB Entry third-party-advisory
https://vuldb.com/?submit.735339
Exploit, Issue Tracking, Vendor Advisory issue-tracking
https://github.com/open5gs/open5gs/issues/4230
Exploit, Issue Tracking, Vendor Advisory exploit issue-tracking
https://github.com/open5gs/open5gs/issues/4230#issue-3774173079
Various Sources product
https://github.com/open5gs/open5gs/

Scores

CVSS v3 5.3
EPSS 0.0068
EPSS Percentile 47.5%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

CISA SSVC

Vulnrichment
Exploitation poc
Automatable yes
Technical Impact partial

Details

CWE
CWE-404
Status published
Products (1)
open5gs/open5gs < 2.7.6
Published Jan 19, 2026
Tracked Since Feb 18, 2026