CVE-2025-15539

MEDIUM EPSS 47.9%
Published Jan 19, 20265mo ago · Modified Jun 17, 20261w ago
5.5 CVSS 4.0
Medium
Find Similar
Published Jan 19, 2026 5mo ago
Last Modified Jun 17, 2026 1w ago

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.

CVSS Details

Base Score
5.5
Exploitability
—
Impact
—
Vector string
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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope X

Threat Intelligence

EPSS Exploit Probability
47.9% percentile
Exploit & Patch Status
Public Exploit Known
Patch Available

Weaknesses 1

CWE-404

Affected Products 1

VendorProductVersionRange
open5gsopen5gs* ≤2.7.6

References 7

  • github.com https://github.com/open5gs/open5gs/
  • github.com https://github.com/open5gs/open5gs/commit/b4707272c1caf6a7d4dca905694ea55557a0545f
    Patch
  • github.com https://github.com/open5gs/open5gs/issues/4230
    ExploitIssue TrackingVendor Advisory
  • github.com https://github.com/open5gs/open5gs/issues/4230#issue-3774173079
    ExploitIssue TrackingVendor Advisory
  • vuldb.com https://vuldb.com/?ctiid.341732
    Permissions RequiredVDB Entry
  • vuldb.com https://vuldb.com/?id.341732
    Third Party AdvisoryVDB Entry
  • vuldb.com https://vuldb.com/?submit.735339
    Third Party AdvisoryVDB Entry

Remediation

  • github.com https://github.com/open5gs/open5gs/commit/b4707272c1caf6a7d4dca905694ea55557a0545f
    Patch