CVE-2025-15687
Open5GS SMF Diameter Gx Credit-Control-Answer smf_gx_cca_cb denial of service
Description
A security flaw has been discovered in Open5GS up to 2.7.6. Impacted is the function smf_gx_cca_cb of the component SMF Diameter Gx Credit-Control-Answer Handler. The manipulation results in denial of service. The attack can be launched remotely. The exploit has been released to the public and may be used for attacks. Upgrading to version 2.7.7 is recommended to address this issue. The patch is identified as f23d7a5e959acd8f37b925dc29b85f26b7d391cb. Upgrading the affected component is advised.
INFO
Published Date :
Aug. 12, 2026, 4:17 a.m.
Last Modified :
Aug. 12, 2026, 4:17 a.m.
Remotely Exploit :
Yes !
Source :
[email protected]
Affected Products
The following products are affected by CVE-2025-15687
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 2.0 | MEDIUM | [email protected] | ||||
| CVSS 3.1 | MEDIUM | [email protected] | ||||
| CVSS 4.0 | LOW | [email protected] |
Solution
- Upgrade Open5GS to version 2.7.7.
- Apply the patch f23d7a5e959acd8f37b925dc29b85f26b7d391cb.
- Update the SMF Diameter Gx CCA Handler component.
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-2025-15687.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2025-15687 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-2025-15687
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-2025-15687 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2025-15687 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.
-
New CVE Received by [email protected]
Aug. 12, 2026
Action Type Old Value New Value Added Affected [{'cpes': ['cpe:2.3:a:open5gs:open5gs:*:*:*:*:*:*:*:*'], 'vendor': 'n/a', 'modules': ['SMF Diameter Gx Credit-Control-Answer Handler'], 'product': 'Open5GS', 'versions': [{'status': 'affected', 'version': '2.7.0'}, {'status': 'affected', 'version': '2.7.1'}, {'status': 'affected', 'version': '2.7.2'}, {'status': 'affected', 'version': '2.7.3'}, {'status': 'affected', 'version': '2.7.4'}, {'status': 'affected', 'version': '2.7.5'}, {'status': 'affected', 'version': '2.7.6'}, {'status': 'unaffected', 'version': '2.7.7'}]}] Added Description A security flaw has been discovered in Open5GS up to 2.7.6. Impacted is the function smf_gx_cca_cb of the component SMF Diameter Gx Credit-Control-Answer Handler. The manipulation results in denial of service. The attack can be launched remotely. The exploit has been released to the public and may be used for attacks. Upgrading to version 2.7.7 is recommended to address this issue. The patch is identified as f23d7a5e959acd8f37b925dc29b85f26b7d391cb. Upgrading the affected component is advised. Added CVSS V4.0 AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L Added CVSS V2 (AV:N/AC:L/Au:S/C:N/I:N/A:P) Added CWE CWE-404 Added Reference https://github.com/open5gs/open5gs/ Added Reference https://github.com/open5gs/open5gs/commit/f23d7a5e959acd8f37b925dc29b85f26b7d391cb Added Reference https://github.com/open5gs/open5gs/issues/4027 Added Reference https://github.com/open5gs/open5gs/pull/4034 Added Reference https://github.com/open5gs/open5gs/releases/tag/v2.7.7 Added Reference https://github.com/user-attachments/files/21515527/SMF.crashes.zip Added Reference https://vuldb.com/cve/CVE-2025-15687 Added Reference https://vuldb.com/submit/867119 Added Reference https://vuldb.com/vuln/387283 Added Reference https://vuldb.com/vuln/387283/cti