CVE-2026-7707 Details
Description
A vulnerability was found in Open5GS up to 2.7.7. Impacted is the function udr_nudr_dr_handle_subscription_context of the file /src/udr/nudr-handler.c of the component UDR. The manipulation of the argument pei results in denial of service. The attack can be launched remotely. The exploit has been made public and could be used. The project was informed of the problem early through an issue report but has not responded yet.
A denial-of-service vulnerability has been identified in Open5GS versions through 2.7.7, specifically within the UDR component. The issue arises in the function 'udr_nudr_dr_handle_subscription_context' located in 'nudr-handler.c'. The vulnerability is triggered by manipulating the 'pei' argument, leading to a crash of the UDR process. This issue can be exploited remotely, causing the container to restart automatically after the crash.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed May 3, 2026CISA-ADP
Assessed May 5, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/open5gs/open5gs/issues/4410 | CISA-ADP | ExploitIssue TrackingTechnical DescriptionVendor |
| https://vuldb.com/submit/805699 | CISA-ADP | Permission Required |
| https://vuldb.com/submit/805700 | CISA-ADP | Permission Required |
| https://github.com/open5gs/open5gs/ | [email protected] | Vendor |
| https://github.com/open5gs/open5gs/issues/4410 | [email protected] | ExploitIssue TrackingTechnical DescriptionVendor |
| https://github.com/open5gs/open5gs/issues/4411 | [email protected] | ExploitIssue TrackingTechnical DescriptionVendor |
| https://vuldb.com/submit/805699 | [email protected] | Permission Required |
| https://vuldb.com/submit/805700 | [email protected] | Permission Required |
| https://vuldb.com/vuln/360883 | [email protected] | AdvisoryPermission Required |
| https://vuldb.com/vuln/360883/cti | [email protected] | Content Wall |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-404 | Improper Resource Shutdown or Release | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| Open5GS | <= 2.7.7 (semver) |
CPE
Remediation
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Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| May 5, 2026 | CVE Modified | CISA-ADP |
| May 3, 2026 | New CVE Received | [email protected] |