CVE-2026-1738
Open5GS SGWC context.c sgwc_tunnel_add assertion
Description
A flaw has been found in Open5GS up to 2.7.6. The impacted element is the function sgwc_tunnel_add of the file /src/sgwc/context.c of the component SGWC. Executing a manipulation of the argument pdr can lead to reachable assertion. The attack can be executed remotely. The exploit has been published and may be used. It is advisable to implement a patch to correct this issue. The issue report is flagged as already-fixed.
INFO
Published Date :
Feb. 2, 2026, 2:16 a.m.
Last Modified :
Feb. 2, 2026, 2:16 a.m.
Remotely Exploit :
Yes !
Source :
[email protected]
Affected Products
The following products are affected by CVE-2026-1738
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 | MEDIUM | [email protected] |
Solution
- Update Open5GS to a version later than 2.7.6.
- Apply available patches for Open5GS.
- Review the sgwc_tunnel_add function changes.
- Test the SGWC component after patching.
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-2026-1738.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-1738 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-2026-1738
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-2026-1738 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-1738 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]
Feb. 02, 2026
Action Type Old Value New Value Added Description A flaw has been found in Open5GS up to 2.7.6. The impacted element is the function sgwc_tunnel_add of the file /src/sgwc/context.c of the component SGWC. Executing a manipulation of the argument pdr can lead to reachable assertion. The attack can be executed remotely. The exploit has been published and may be used. It is advisable to implement a patch to correct this issue. The issue report is flagged as already-fixed. Added CVSS V4.0 AV:N/AC:L/AT:N/PR:N/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:N/UI:N/S:U/C:N/I:N/A:L Added CVSS V2 (AV:N/AC:L/Au:N/C:N/I:N/A:P) Added CWE CWE-617 Added Reference https://github.com/open5gs/open5gs/ Added Reference https://github.com/open5gs/open5gs/issues/4261 Added Reference https://github.com/open5gs/open5gs/issues/4261#event-21968563677 Added Reference https://github.com/open5gs/open5gs/issues/4261#issue-3787803578 Added Reference https://vuldb.com/?ctiid.343637 Added Reference https://vuldb.com/?id.343637 Added Reference https://vuldb.com/?submit.741193