PT-2025-52283 · Open5Gs · Open5Gs

Linziyuu · Published 2025-12-18 · Updated 2025-12-20 · CVE-2025-65559

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 Open5GS version 2.7.5-49-g465e90f

Description A flaw exists in Open5GS where a malformed PFCP Session Establishment Request can cause the UPF to crash. Specifically, when processing a request (type=50) and the CreatePDR?PDI?F-TEID has CH=1, a mismatch between the F-TEID address-family flags (IPv4/IPv6) and the GTP-U resource family configured for the selected DNN (Network Instance) triggers a reachable assertion within the lib/pfcp/context.c file, at the ogs pfcp object teid hash set function. This results in a denial of service.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

DoS

Assertion Failure

Weakness Enumeration

CWE-617

Related Identifiers

CVE-2025-65559

Affected Products

Open5Gs

References · 5

• 🔥 https://github.com/open5gs/open5gs/issues/4135 · Exploit
• https://osv.dev/vulnerability/CVE-2025-65559 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-65559 · Security Note
• https://twitter.com/VulmonFeeds/status/2001769720995803561 · Twitter Post
• https://twitter.com/CVEnew/status/2002487750067630263 · Twitter Post