EUVD-2025-209598Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
Lifecycle Timeline
5DescriptionCVE.org
An issue in open5gs v.2.7.3 allows a remote attacker to cause a denial of service via a crafted PDU Session Modification Request
AnalysisAI
Remote denial of service in Open5GS 2.7.3 allows unauthenticated attackers to crash the 5G core network by sending malformed PDU Session Modification Request messages. The vulnerability stems from improper input validation (CWE-20) in session management functions. EPSS score of 0.07% indicates low observed exploitation probability, and no active exploitation has been confirmed via CISA KEV. However, the attack requires no authentication or user interaction (AV:N/AC:L/PR:N/UI:N), making it trivially exploitable against exposed 5G core deployments, potentially disrupting mobile network services for enterprise or carrier environments.
Technical ContextAI
Open5GS is an open-source implementation of 5G Core and Evolved Packet Core (EPC) network functions. The vulnerability affects the Session Management Function (SMF) component responsible for handling PDU (Protocol Data Unit) Session lifecycle operations. The PDU Session Modification Request is a 3GPP-defined NAS (Non-Access Stratum) message used to modify established data sessions between user equipment and the 5G core. The root cause is CWE-20 (Improper Input Validation), indicating the SMF fails to properly sanitize or validate fields within incoming modification requests before processing them. CPE data shows 'n/a:n/a' which reflects incomplete vendor enumeration in NVD, but the GitHub issue confirms the specific affected product is Open5GS version 2.7.3. This affects deployments where the SMF interface is exposed to untrusted networks or compromised radio access equipment.
RemediationAI
Primary remediation requires monitoring the Open5GS GitHub repository (https://github.com/open5gs/open5gs) for a patch release addressing issue #3858, as no fixed version number is confirmed in available vendor advisories at time of analysis. Until an official patch is released, implement these specific compensating controls: (1) Deploy network-level filtering to restrict PDU Session Management messages to only trusted 5G RAN equipment using IPsec or TLS mutual authentication on N1/N2 interfaces, accepting the operational overhead of certificate management. (2) Enable strict input validation logging on SMF to detect malformed PDU Session Modification Requests and implement rate-limiting per UE (User Equipment) identifier to contain potential DoS impact, though this may introduce latency during legitimate high-volume session modifications. (3) Deploy SMF instances in high-availability clusters with health monitoring to enable automatic failover if a node crashes, which increases infrastructure cost but maintains service continuity. (4) For lab/test environments, isolate Open5GS deployments from production networks entirely and restrict access to authenticated VPN connections only. Subscribe to security notifications at https://github.com/open5gs/open5gs/security/advisories for official patch announcements.
LibreNMS before 24.10.0 allows a remote attacker to execute arbitrary code via OS command injection involving AboutContr
Reachable assertion in Open5GS up to version 2.7.6 allows remote unauthenticated attackers to crash the Diameter CER han
A Command Injection issue in the payload build page in BYOB (Build Your Own Botnet) 2.0 allows attackers to execute arbi
Denial of service in Open5GS 2.7.6 and earlier allows network-adjacent attackers with low-privilege Diameter Gx peer acc
Denial of service in Open5GS HSS (Home Subscriber Server) versions 2.7.0 through 2.7.6 is triggered remotely by manipula
Remote command injection in Control Web Panel allows unauthenticated attackers to execute arbitrary OS commands as root
LINQPad before 5.52.01 Pro edition is vulnerable to Unsafe Deserialization in LINQPad.AutoRefManager::PopulateFromCache(
Remote code execution in dash-uploader (Python package for Plotly Dash) versions 0.1.0 through 0.7.0a2 allows unauthenti
Command injection in LiteLLM 1.18.10 lets attackers who can configure MCP (Model Context Protocol) servers supply arbitr
SQL injection in AzuraCast's backup restore flow (versions up to and including 0.23.7) lets an attacker achieve privileg
Arbitrary file read in Yu AI Code Mother v4.3 lets anonymous, remote attackers retrieve files outside the intended previ
Remote code execution in APScheduler (all versions through 3.10.x and 4.0.0a5) is achievable when applications deseriali
Same weakness CWE-20 – Improper Input Validation
View allSame technique Denial Of Service
View allShare
External POC / Exploit Code
Leaving vuln.today