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.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
None
No data leak
Integrity
None
No data modification
Availability
Low
Partial disruption
CVSS Vector v4.0
Weakness Type (CWE)
Vulnerable Products
n/a:open5gs
References 7
https://github.com/open5gs/open5gs/
cna@vuldb.com
https://github.com/open5gs/open5gs/commit/028e1dbb5e3271035ccee906ef417a97fc523…
cna@vuldb.com
https://github.com/open5gs/open5gs/issues/4699
cna@vuldb.com
https://vuldb.com/cve/CVE-2026-91855
cna@vuldb.com
https://vuldb.com/submit/933834
cna@vuldb.com
https://vuldb.com/vuln/404086
cna@vuldb.com
https://vuldb.com/vuln/404086/cti
cna@vuldb.com