PT-2025-52289 · Unknown · Omec-Project Upf

Linziyuu · Published 2025-12-18 · Updated 2025-12-20 · CVE-2025-65565

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions omec-project UPF version 2.1.3-dev

Description A denial-of-service issue exists in the omec-project UPF (pfcpiface component). Specifically, when a PFCP Session Establishment Request is sent to the UPF’s N4/PFCP endpoint without the mandatory F-SEID Information Element, it is not properly validated. This causes the session establishment handler to call IE.FSEID() on a nil pointer, resulting in a panic and termination of the UPF process. An attacker can exploit this by repeatedly sending malformed PFCP Session Establishment Request messages, causing the UPF to crash and disrupting user-plane services. The affected API endpoint is the N4/PFCP endpoint. The vulnerable parameter is the F-SEID Information Element within the PFCP Session Establishment Request.

Recommendations Update to a newer version of omec-project UPF that addresses this issue. As a temporary workaround, implement strict input validation for PFCP Session Establishment Request messages to ensure the presence of the mandatory F-SEID Information Element before processing.

Exploit

Fix

DoS

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

CVE-2025-65565

Affected Products

Omec-Project Upf

References · 5

• 🔥 https://github.com/omec-project/upf/issues/957 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2025-65565 · Security Note
• https://osv.dev/vulnerability/CVE-2025-65565 · Vendor Advisory
• https://twitter.com/VulmonFeeds/status/2001756922337226774 · Twitter Post
• https://twitter.com/CVEnew/status/2002487755348324729 · Twitter Post