CVE-2026-8288
Open5GS SMF gsm-handler.c denial of service
Description
A vulnerability was determined in Open5GS up to 2.7.7. This affects the function gsm_handle_pdu_session_modification_qos_flow_descriptions of the file src/smf/gsm-handler.c of the component SMF. Executing a manipulation of the argument n1SmMsg can lead to denial of service. The attack may be launched remotely. The exploit has been publicly disclosed and may be utilized. The pull request to fix this issue awaits acceptance.
INFO
Published Date :
May 11, 2026, 1:16 p.m.
Last Modified :
May 12, 2026, 5:18 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 2.0 | MEDIUM | [email protected] | ||||
| CVSS 3.1 | MEDIUM | [email protected] | ||||
| CVSS 3.1 | MEDIUM | [email protected] | ||||
| CVSS 4.0 | LOW | [email protected] |
Solution
- Update Open5GS to a patched version.
- Apply the fix for the SMF component.
- Review changes in src/smf/gsm-handler.c.
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-2026-8288.
| URL | Resource |
|---|---|
| https://github.com/open5gs/open5gs/ | Product |
| https://github.com/open5gs/open5gs/issues/4452 | Exploit Issue Tracking |
| https://github.com/open5gs/open5gs/pull/4513 | Issue Tracking Patch |
| https://vuldb.com/submit/808489 | Third Party Advisory VDB Entry |
| https://vuldb.com/vuln/362585 | Third Party Advisory VDB Entry |
| https://vuldb.com/vuln/362585/cti | Permissions Required VDB Entry |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-8288 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-2026-8288
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-2026-8288 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-8288 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]
May. 12, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Added CPE Configuration OR *cpe:2.3:a:open5gs:open5gs:*:*:*:*:*:*:*:* versions up to (including) 2.7.7 Added Reference Type VulDB: https://github.com/open5gs/open5gs/ Types: Product Added Reference Type VulDB: https://github.com/open5gs/open5gs/issues/4452 Types: Exploit, Issue Tracking Added Reference Type VulDB: https://github.com/open5gs/open5gs/pull/4513 Types: Issue Tracking, Patch Added Reference Type VulDB: https://vuldb.com/submit/808489 Types: Third Party Advisory, VDB Entry Added Reference Type VulDB: https://vuldb.com/vuln/362585 Types: Third Party Advisory, VDB Entry Added Reference Type VulDB: https://vuldb.com/vuln/362585/cti Types: Permissions Required, VDB Entry -
New CVE Received by [email protected]
May. 11, 2026
Action Type Old Value New Value Added Description A vulnerability was determined in Open5GS up to 2.7.7. This affects the function gsm_handle_pdu_session_modification_qos_flow_descriptions of the file src/smf/gsm-handler.c of the component SMF. Executing a manipulation of the argument n1SmMsg can lead to denial of service. The attack may be launched remotely. The exploit has been publicly disclosed and may be utilized. The pull request to fix this issue awaits acceptance. 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/issues/4452 Added Reference https://github.com/open5gs/open5gs/pull/4513 Added Reference https://vuldb.com/submit/808489 Added Reference https://vuldb.com/vuln/362585 Added Reference https://vuldb.com/vuln/362585/cti