CVE-2025-15539 Details
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.
A denial-of-service vulnerability has been identified in Open5GS versions through 2.7.6, specifically within the SGW-C component. The issue arises in the 'sgwc_s11_handle_downlink_data_notification_ack' function, located in 'src/sgwc/s11-handler.c'. This vulnerability can be exploited remotely, causing the SGW-C process to crash by asserting a null or stale bearer reference, which is a known issue that has already been fixed in the codebase.
Users are advised to update to the latest version of Open5GS, where this issue has been fixed.
Metrics
CVSS 4.0 Severity and Vector Strings:
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Jan 20, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/open5gs/open5gs/ | [email protected] | |
| https://github.com/open5gs/open5gs/commit/b4707272c1caf6a7d4dca905694ea55557a0545f | [email protected] | Patch |
| https://github.com/open5gs/open5gs/issues/4230 | [email protected] | ExploitIssue TrackingVendor Advisory |
| https://github.com/open5gs/open5gs/issues/4230#issue-3774173079 | [email protected] | ExploitIssue TrackingVendor Advisory |
| https://vuldb.com/?ctiid.341732 | [email protected] | Permissions RequiredVDB Entry |
| https://vuldb.com/?id.341732 | [email protected] | Third Party AdvisoryVDB Entry |
| https://vuldb.com/?submit.735339 | [email protected] | Third Party AdvisoryVDB Entry |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-404 | Improper Resource Shutdown or Release | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| open5gs open5gs | <= 2.7.6 |
CPE
Remediation
| |
Change History
5 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Feb 23, 2026 | CVE Modified | [email protected] |
| Feb 10, 2026 | Initial Analysis | [email protected] |
| Jan 19, 2026 | New CVE Received | [email protected] |