CVE-2026-8250: Denial of Service in Open5GS
CVE-2026-8250 is a medium severity vulnerability in Open5GS versions up to 2.7.7 affecting the SMF component. It arises from a flaw in the function smf_n4_build_qos_flow_to_modify_list, which can be remotely exploited to cause a denial of service. The vulnerability has been publicly disclosed, but no official patch or remediation has been provided by the project as of the publication date. The attack requires no user interaction and has low complexity, but some privileges are needed to execute it.
AI Analysis
Technical Summary
This vulnerability in Open5GS (up to version 2.7.7) impacts the SMF component, specifically the function smf_n4_build_qos_flow_to_modify_list in /src/smf/n4-build.c. Improper handling in this function allows remote attackers to cause a denial of service condition. The vulnerability has a CVSS 4.0 base score of 5.3 (medium severity), with attack vector network, low attack complexity, no user interaction, and requires low privileges. The project was notified early but has not yet responded or issued a fix. No official patch or mitigation guidance is currently available.
Potential Impact
Successful exploitation results in denial of service, potentially disrupting the affected Open5GS SMF component's operation. This could impact network function management relying on Open5GS, leading to service unavailability. There is no evidence of exploitation in the wild at this time.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no official fix or temporary workaround has been announced, users should monitor the Open5GS project for updates. Until a patch is available, consider limiting access to the affected SMF component to trusted networks and applying network-level protections to reduce exposure.
CVE-2026-8250: Denial of Service in Open5GS
Description
CVE-2026-8250 is a medium severity vulnerability in Open5GS versions up to 2.7.7 affecting the SMF component. It arises from a flaw in the function smf_n4_build_qos_flow_to_modify_list, which can be remotely exploited to cause a denial of service. The vulnerability has been publicly disclosed, but no official patch or remediation has been provided by the project as of the publication date. The attack requires no user interaction and has low complexity, but some privileges are needed to execute it.
CVSS v4.0
Score 5.3medium
Affected software
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability in Open5GS (up to version 2.7.7) impacts the SMF component, specifically the function smf_n4_build_qos_flow_to_modify_list in /src/smf/n4-build.c. Improper handling in this function allows remote attackers to cause a denial of service condition. The vulnerability has a CVSS 4.0 base score of 5.3 (medium severity), with attack vector network, low attack complexity, no user interaction, and requires low privileges. The project was notified early but has not yet responded or issued a fix. No official patch or mitigation guidance is currently available.
Potential Impact
Successful exploitation results in denial of service, potentially disrupting the affected Open5GS SMF component's operation. This could impact network function management relying on Open5GS, leading to service unavailability. There is no evidence of exploitation in the wild at this time.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no official fix or temporary workaround has been announced, users should monitor the Open5GS project for updates. Until a patch is available, consider limiting access to the affected SMF component to trusted networks and applying network-level protections to reduce exposure.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulDB
- Date Reserved
- 2026-05-10T14:40:04.579Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a010bf3cbff5d8610025340
Added to database: 5/10/2026, 10:51:31 PM
Last enriched: 5/18/2026, 10:47:39 AM
Last updated: 6/17/2026, 11:44:26 PM
Views: 64
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