Description
A flaw has been found in Open5GS up to 2.7.5. This affects the function decode_ipv6_header/ogs_pfcp_pdr_rule_find_by_packet of the file lib/pfcp/rule-match.c of the component PFCP Session Establishment Request Handler. Executing a manipulation can lead to reachable assertion. It is possible to launch the attack remotely. The exploit has been published and may be used. This patch is called b72d8349980076e2c033c8324f07747a86eea4f8. Applying a patch is advised to resolve this issue.
Affected products
open5gs: open5gs
References8
- github.com/open5gs/open5gs/commit/b72d8349980076e2c033c8324f077… Patch
- github.com/open5gs/open5gs/issues/4180 ExploitIssue Tracking
- github.com/open5gs/open5gs/issues/4180#issue-3666760066 ExploitIssue Tracking
- github.com/open5gs/open5gs/issues/4180#issuecomment-3615555671 ExploitIssue Tracking
- vuldb.com/?submit.719830 ExploitThird Party AdvisoryVDB Entry
- github.com/open5gs/open5gs/
- vuldb.com/?ctiid.338561 Permissions RequiredVDB Entry
- vuldb.com/?id.338561 Third Party AdvisoryVDB Entry
Metrics
- CVSS 3.1
-
7.5
HIGH
Score source: NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - CVSS 4.0
-
5.5
MEDIUM
Score source: CNA
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - EPSS — exploit probability
- 1% percentile: 50 · as of 11 November 2026
- CWE
- CWE-617
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.