Free5GC SMF datapath.go ResolveNodeIdToIp denial of service

published 2026-02-06 9 mo ago modified 2026-06-17 4 mo ago also EUVD-2026-5604

cvss: 5.3; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.6%; EPSS 0.6% chance of exploitation in 30 days, percentile 48%
public exploits: 0; none known

A vulnerability was identified in Free5GC up to 4.1.0. This affects the function ResolveNodeIdToIp of the file internal/sbi/processor/datapath.go of the component SMF. The manipulation leads to denial of service. Remote exploitation of the attack is possible. The exploit is publicly available and might be used. It is recommended to apply a patch to fix this issue.

Patch / fix

links 1

github.com/free5gc/smf#189 pull request

CISA SSVC

Exploitation: Proof of concept is public
Automatable: yes
Technical impact: partial
Assessed: 9 mo ago (2026-02-06)

Exploit prediction

0.59% chance of exploitation in the next 30 days, higher than 48% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

github.com https://github.com/free5gc/free5gc/issues/816#issue-3832055233 referenced PoC, tagged "exploit" by a source, unverified
vuldb.com https://vuldb.com/?submit.743237 referenced PoC, tagged "exploit" by a source, unverified
github.com https://github.com/free5gc/free5gc/issues/816 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CNA	4.0	6.9	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
CNA	3.1	5.3	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C
CNA	3.0	5.3	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C
CNA	2.0	5.0	AV:N/AC:L/Au:N/C:N/I:N/A:P/E:POC/RL:OF/RC:C
CNA	4.0	5.5	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
CNA	3.1	5.3	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
NVD	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CNA	2.0	5.0	AV:N/AC:L/Au:N/C:N/I:N/A:P

Affected products

n/a Free5GC

Classification

Weakness

CWE-404 Improper Resource Shutdown or Release

References

github.com /free5gc/smf/pull/189
issue-tracking, patch
github.com /free5gc/free5gc/issues/816#issue-3832055233
exploit, issue-tracking, vendor-advisory
vuldb.com /?submit.743237
third-party-advisory, exploit, vdb-entry
github.com /free5gc/free5gc/issues/816
issue-tracking, exploit, vendor-advisory
vuldb.com /?id.344496
vdb-entry, technical-description, third-party-advisory
vuldb.com /?ctiid.344496
signature, permissions-required, vdb-entry
github.com /free5gc/free5gc/
product

Sources

CVE List CVE-2026-1974
NVD CVE-2026-1974

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary