CVE-2026-7536: Denial of Service in Open5GS
A vulnerability was determined in Open5GS up to 2.7.7. This vulnerability affects the function bsf_sess_add_by_ip_address of the file /nbsf-management/v1/pcfBindings of the component BSF. Executing a manipulation of the argument ipv4Addr can lead to denial of service. The attack can be launched remotely. The exploit has been publicly disclosed and may be utilized. The project was informed of the problem early through an issue report but has not responded yet.
AI Analysis
Technical Summary
Open5GS versions 2.7.0 through 2.7.7 contain a vulnerability in the BSF component's bsf_sess_add_by_ip_address function, where manipulation of the ipv4Addr argument can trigger a denial of service condition. This vulnerability is remotely exploitable without requiring privileges or user interaction. The issue was reported early to the project but remains unaddressed, and no official fix or workaround has been published. The CVSS 4.0 base score is 6.9, indicating a medium severity impact primarily due to denial of service.
Potential Impact
Successful exploitation results in denial of service of the BSF component in Open5GS, potentially disrupting network functions relying on this service. The vulnerability can be triggered remotely without authentication, increasing the risk of service interruption. However, there are no reports of active exploitation in the wild. The lack of an official fix means affected deployments remain vulnerable.
Mitigation Recommendations
No official patch or remediation is currently available for this vulnerability. Users should monitor the Open5GS project for updates or advisories. Until a fix is released, consider implementing network-level protections such as filtering or rate limiting access to the affected BSF management interface to reduce exposure. Avoid exposing the vulnerable service to untrusted networks where possible.
CVE-2026-7536: Denial of Service in Open5GS
Description
A vulnerability was determined in Open5GS up to 2.7.7. This vulnerability affects the function bsf_sess_add_by_ip_address of the file /nbsf-management/v1/pcfBindings of the component BSF. Executing a manipulation of the argument ipv4Addr can lead to denial of service. The attack can be launched remotely. The exploit has been publicly disclosed and may be utilized. The project was informed of the problem early through an issue report but has not responded yet.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
Open5GS versions 2.7.0 through 2.7.7 contain a vulnerability in the BSF component's bsf_sess_add_by_ip_address function, where manipulation of the ipv4Addr argument can trigger a denial of service condition. This vulnerability is remotely exploitable without requiring privileges or user interaction. The issue was reported early to the project but remains unaddressed, and no official fix or workaround has been published. The CVSS 4.0 base score is 6.9, indicating a medium severity impact primarily due to denial of service.
Potential Impact
Successful exploitation results in denial of service of the BSF component in Open5GS, potentially disrupting network functions relying on this service. The vulnerability can be triggered remotely without authentication, increasing the risk of service interruption. However, there are no reports of active exploitation in the wild. The lack of an official fix means affected deployments remain vulnerable.
Mitigation Recommendations
No official patch or remediation is currently available for this vulnerability. Users should monitor the Open5GS project for updates or advisories. Until a fix is released, consider implementing network-level protections such as filtering or rate limiting access to the affected BSF management interface to reduce exposure. Avoid exposing the vulnerable service to untrusted networks where possible.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulDB
- Date Reserved
- 2026-04-30T18:17:36.611Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69f40aa7cbff5d86100cf5ae
Added to database: 5/1/2026, 2:06:31 AM
Last enriched: 5/1/2026, 2:21:31 AM
Last updated: 5/1/2026, 4:14:47 AM
Views: 5
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