CVE-2026-8251: Denial of Service in Open5GS
CVE-2026-8251 is a medium severity vulnerability in Open5GS versions up to 2. 7. 7 affecting the SMF component's function update_authorized_pcc_rule_and_qos. It allows a remote attacker to cause a denial of service by manipulating this function. The vulnerability has a CVSS 4. 0 base score of 5. 3, indicating a medium impact. Although the issue was reported early, the Open5GS project has not yet responded or released a patch. No official remediation or fix is currently available, and no known exploits are reported in the wild.
AI Analysis
Technical Summary
This vulnerability exists in Open5GS up to version 2.7.7 within the SMF component, specifically in the update_authorized_pcc_rule_and_qos function in /src/smf/npcf-handler.c. A remote attacker can manipulate this function to cause a denial of service condition. The vulnerability requires no user interaction and has low attack complexity, with no privileges required. The project has been informed but has not issued a fix or official response as of the publication date.
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 the SMF. The medium CVSS score reflects the moderate impact and ease of attack. No evidence of active exploitation in the wild has been reported.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since the project has not responded or released a fix, users should monitor official Open5GS channels for updates. In the meantime, consider limiting exposure of the affected SMF service to untrusted networks to reduce risk.
CVE-2026-8251: Denial of Service in Open5GS
Description
CVE-2026-8251 is a medium severity vulnerability in Open5GS versions up to 2. 7. 7 affecting the SMF component's function update_authorized_pcc_rule_and_qos. It allows a remote attacker to cause a denial of service by manipulating this function. The vulnerability has a CVSS 4. 0 base score of 5. 3, indicating a medium impact. Although the issue was reported early, the Open5GS project has not yet responded or released a patch. No official remediation or fix is currently available, and no known exploits are reported in the wild.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability exists in Open5GS up to version 2.7.7 within the SMF component, specifically in the update_authorized_pcc_rule_and_qos function in /src/smf/npcf-handler.c. A remote attacker can manipulate this function to cause a denial of service condition. The vulnerability requires no user interaction and has low attack complexity, with no privileges required. The project has been informed but has not issued a fix or official response as of the publication date.
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 the SMF. The medium CVSS score reflects the moderate impact and ease of attack. No evidence of active exploitation in the wild has been reported.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since the project has not responded or released a fix, users should monitor official Open5GS channels for updates. In the meantime, consider limiting exposure of the affected SMF service to untrusted networks to reduce risk.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulDB
- Date Reserved
- 2026-05-10T14:40:06.984Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a011314cbff5d8610067e1a
Added to database: 5/10/2026, 11:21:56 PM
Last enriched: 5/10/2026, 11:36:19 PM
Last updated: 5/11/2026, 12:31:54 AM
Views: 4
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