CVE-2026-91855: Denial of Service in Open5GS
A security flaw has been discovered in Open5GS up to 2.7.7. Affected by this vulnerability is an unknown functionality of the file lib/pfcp/handler.c of the component PFCP Message Handler. Performing a manipulation results in denial of service. Remote exploitation of the attack is possible. The exploit has been released to the public and may be used for attacks. The patch is named 028e1dbb5e3271035ccee906ef417a97fc523f71. Applying a patch is the recommended action to fix this issue. CVE-2025-29339 describes a different assertion failure vulnerability in Open5GS UPF.
AI Analysis
Technical Summary
This vulnerability in Open5GS up to version 2.7.7 involves a denial of service condition triggered by manipulating an unknown functionality within the PFCP Message Handler (lib/pfcp/handler.c). The flaw allows remote unauthenticated attackers to cause a denial of service. A patch has been released (commit 028e1dbb5e3271035ccee906ef417a97fc523f71) to remediate this issue. The vulnerability is distinct from CVE-2025-29339, which affects a different component.
Potential Impact
Successful exploitation results in denial of service, potentially disrupting Open5GS network functions. The attack can be performed remotely without privileges or user interaction, increasing the risk of service disruption.
Mitigation Recommendations
Apply the official patch identified by commit 028e1dbb5e3271035ccee906ef417a97fc523f71 to remediate the vulnerability. This is the recommended action to fix the issue.
CVE-2026-91855: Denial of Service in Open5GS
Description
A security flaw has been discovered in Open5GS up to 2.7.7. Affected by this vulnerability is an unknown functionality of the file lib/pfcp/handler.c of the component PFCP Message Handler. Performing a manipulation results in denial of service. Remote exploitation of the attack is possible. The exploit has been released to the public and may be used for attacks. The patch is named 028e1dbb5e3271035ccee906ef417a97fc523f71. Applying a patch is the recommended action to fix this issue. CVE-2025-29339 describes a different assertion failure vulnerability in Open5GS UPF.
CVSS v4.0
Score 6.9medium
Affected software
Open5GS
pkg:github/open5gs/open5gscpe:2.3:a:open5gs:open5gs:*:*:*:*:*:*:*:*Run on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability in Open5GS up to version 2.7.7 involves a denial of service condition triggered by manipulating an unknown functionality within the PFCP Message Handler (lib/pfcp/handler.c). The flaw allows remote unauthenticated attackers to cause a denial of service. A patch has been released (commit 028e1dbb5e3271035ccee906ef417a97fc523f71) to remediate this issue. The vulnerability is distinct from CVE-2025-29339, which affects a different component.
Potential Impact
Successful exploitation results in denial of service, potentially disrupting Open5GS network functions. The attack can be performed remotely without privileges or user interaction, increasing the risk of service disruption.
Mitigation Recommendations
Apply the official patch identified by commit 028e1dbb5e3271035ccee906ef417a97fc523f71 to remediate the vulnerability. This is the recommended action to fix the issue.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulDB
- Date Reserved
- 2026-09-15T09:10:03.977Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6aa97a1355bf5e2cf51ed0a9
Added to database: 09/15/2026, 17:02:11 UTC
Last enriched: 09/15/2026, 17:17:15 UTC
Last updated: 09/15/2026, 18:02:11 UTC
Views: 7
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