CVE-2025-65559
Open5GS UPF Denial of Service
Description
An issue was discovered in Open5GS 2.7.5-49-g465e90f, when processing a PFCP Session Establishment Request (type=50), the UPF crashes with a reachable assertion in `lib/pfcp/context.c` (`ogs_pfcp_object_teid_hash_set`) if the CreatePDR?PDI?F-TEID has CH=1 and the F-TEID address-family flag(s) (IPv4/IPv6) do not match the GTP-U resource family configured for the selected DNN (Network Instance), resulting in a denial of service.
INFO
Published Date :
Dec. 18, 2025, 7:16 p.m.
Last Modified :
Jan. 6, 2026, 8:01 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
Solution
- Update Open5GS to the latest stable version.
- Verify UPF configuration for GTP-U resource family.
- Test the system for stability after the update.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2025-65559.
| URL | Resource |
|---|---|
| https://github.com/open5gs/open5gs/issues/4135 | Exploit Issue Tracking Vendor Advisory |
| https://github.com/open5gs/open5gs/issues/4135 | Exploit Issue Tracking Vendor Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2025-65559 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2025-65559
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2025-65559 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2025-65559 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Jan. 06, 2026
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:a:open5gs:open5gs:2.7.5:*:*:*:*:*:*:* Added Reference Type MITRE: https://github.com/open5gs/open5gs/issues/4135 Types: Exploit, Issue Tracking, Vendor Advisory Added Reference Type CISA-ADP: https://github.com/open5gs/open5gs/issues/4135 Types: Exploit, Issue Tracking, Vendor Advisory -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Dec. 19, 2025
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Added CWE CWE-617 Added Reference https://github.com/open5gs/open5gs/issues/4135 -
New CVE Received by [email protected]
Dec. 18, 2025
Action Type Old Value New Value Added Description An issue was discovered in Open5GS 2.7.5-49-g465e90f, when processing a PFCP Session Establishment Request (type=50), the UPF crashes with a reachable assertion in `lib/pfcp/context.c` (`ogs_pfcp_object_teid_hash_set`) if the CreatePDR?PDI?F-TEID has CH=1 and the F-TEID address-family flag(s) (IPv4/IPv6) do not match the GTP-U resource family configured for the selected DNN (Network Instance), resulting in a denial of service. Added Reference https://github.com/open5gs/open5gs/issues/4135