๐Ÿ›ก๏ธ CVE-2026-33064
๐ŸŸ  CVSS 8.0 โ€” High โœ… No Known Exploit CWE-476 NVD
8.0
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Free5GC is an open-source Linux Foundation project for 5th generation (5G) mobile core networks. Versions prior to 1.4.2 are vulnerable to procedure panic caused by Nil Pointer Dereference in the /sdm-subscriptions endpoint. A remote attacker can cause the UDM service to panic and crash by sending a crafted POST request to the /sdm-subscriptions endpoint with a malformed URL path containing path traversal sequences (../) and a large JSON payload. The DataChangeNotificationProcedure function in notifier.go attempts to access a nil pointer without proper validation, causing a complete service crash with "runtime error: invalid memory address or nil pointer dereference". Exploitation would result in UDM functionality disruption until recovery by restart. This issue has been fixed in version 1.4.2.

Details

Severity HIGH
CVSS Score 8.0
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE CWE-476
Public Exploit โœ… No
Source NVD
Published 2026-03-18
Updated 2026-06-15
Modified 2026-03-23

Affected Packages

Software From version Fixed in
github.com/free5gc/udm โ€” โ€”
udm โ€” 1.4.2

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