High severity · published Feb 6, 2026
CVE-2026-1974
Free5GC SMF datapath.go ResolveNodeIdToIp denial of service
7.5
CVSS
0.6%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.6% · higher than 48% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FR
Free5GC · Free5gc
4.0; 4.1.0 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-1974
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-1974
Product
https://github.com/free5gc/free5gc/
Exploit
https://github.com/free5gc/free5gc/issues/816
Exploit
https://github.com/free5gc/free5gc/issues/816#issue-3832055233
Issue Tracking
https://github.com/free5gc/smf/pull/189
Permissions Required
https://vuldb.com/?ctiid.344496
Third Party Advisory
https://vuldb.com/?id.344496
More from Free5GC
10.0
CVE-2026-44327
free5GC: NEF nnef-oam route group is unauthenticated; no-token requests reach the OAM handler
10.0
CVE-2026-44329
free5GC: SMF UPI management interface lacks auth middleware; unauthenticated topology read/write requests reach handlers
10.0
CVE-2026-44330
free5GC: NEF nnef-pfdmanagement API is unauthenticated; forged bearer tokens can read PFD data and create/delete PFD subscriptions
9.4
CVE-2026-44315
free5GC: NEF 3gpp-pfd-management API is unauthenticated; forged bearer tokens can create, read, and delete PFD transactions
9.4
CVE-2026-44326
free5GC: NEF 3gpp-traffic-influence API is unauthenticated; missing or forged bearer tokens can create, read, patch, and delete subscriptions