High severity · published Nov 13, 2023
CVE-2023-47346
Buffer Overflow vulnerability in free5gc 3.3.0, UPF 1.2.0, and SMF 1.2.0 allows attackers to cause a denial of service via crafted PFCP messages
7.5
CVSS
0.8%
EPSS
No
On KEV
Description
Buffer Overflow vulnerability in free5gc 3.3.0, UPF 1.2.0, and SMF 1.2.0 allows attackers to cause a denial of service via crafted PFCP messages.
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)0.8% · higher than 56% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FR
Free5gc · Free5gc
3.3.0 · source: NVD
SM
Smf · Free5gc
1.2.0 · source: NVD
UP
Upf · Free5gc
1.2.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-47346
CVE.org
https://www.cve.org/CVERecord?id=CVE-2023-47346
Exploit
https://github.com/free5gc/free5gc/issues/482
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