CVE-2026-19983
GL.iNet XE3000 NAS Command Service gl_nas_sys os command injection
Description
A vulnerability was detected in GL.iNet A1300, AX1800, AXT1800, MT2500, MT3000, MT6000, X3000 and XE3000 4.8.x. This issue affects some unknown processing of the file /usr/bin/gl_nas_sys of the component NAS Command Service. The manipulation results in os command injection. The attack may be launched remotely. Upgrading to version 4.9.0 is capable of addressing this issue. It is suggested to upgrade the affected component. The vendor explains: "After our investigation, we have confirmed that the vulnerability described (...) does indeed exist."
INFO
Published Date :
Aug. 17, 2026, 5:17 a.m.
Last Modified :
Aug. 17, 2026, 5:17 a.m.
Remotely Exploit :
Yes !
Source :
[email protected]
Affected Products
The following products are affected by CVE-2026-19983
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.
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 2.0 | HIGH | [email protected] | ||||
| CVSS 3.1 | HIGH | [email protected] | ||||
| CVSS 4.0 | MEDIUM | [email protected] |
Solution
- Upgrade GL.iNet firmware to version 4.9.0.
- Apply firmware updates for affected devices.
- Ensure the NAS Command Service component is updated.
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-2026-19983.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-19983 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-2026-19983
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-2026-19983 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-19983 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. 17, 2026
Action Type Old Value New Value Added Affected [{'cpes': ['cpe:2.3:a:gl.inet:a1300:*:*:*:*:*:*:*:*'], 'vendor': 'GL.iNet', 'modules': ['NAS Command Service'], 'product': 'A1300', 'versions': [{'status': 'affected', 'version': '4.8.*'}, {'status': 'unaffected', 'version': '4.9.0'}]}, {'cpes': ['cpe:2.3:a:gl.inet:ax1800:*:*:*:*:*:*:*:*'], 'vendor': 'GL.iNet', 'modules': ['NAS Command Service'], 'product': 'AX1800', 'versions': [{'status': 'affected', 'version': '4.8.*'}, {'status': 'unaffected', 'version': '4.9.0'}]}, {'cpes': ['cpe:2.3:a:gl.inet:axt1800:*:*:*:*:*:*:*:*'], 'vendor': 'GL.iNet', 'modules': ['NAS Command Service'], 'product': 'AXT1800', 'versions': [{'status': 'affected', 'version': '4.8.*'}, {'status': 'unaffected', 'version': '4.9.0'}]}, {'cpes': ['cpe:2.3:a:gl.inet:mt2500:*:*:*:*:*:*:*:*'], 'vendor': 'GL.iNet', 'modules': ['NAS Command Service'], 'product': 'MT2500', 'versions': [{'status': 'affected', 'version': '4.8.*'}, {'status': 'unaffected', 'version': '4.9.0'}]}, {'cpes': ['cpe:2.3:a:gl.inet:mt3000:*:*:*:*:*:*:*:*'], 'vendor': 'GL.iNet', 'modules': ['NAS Command Service'], 'product': 'MT3000', 'versions': [{'status': 'affected', 'version': '4.8.*'}, {'status': 'unaffected', 'version': '4.9.0'}]}, {'cpes': ['cpe:2.3:a:gl.inet:mt6000:*:*:*:*:*:*:*:*'], 'vendor': 'GL.iNet', 'modules': ['NAS Command Service'], 'product': 'MT6000', 'versions': [{'status': 'affected', 'version': '4.8.*'}, {'status': 'unaffected', 'version': '4.9.0'}]}, {'cpes': ['cpe:2.3:a:gl.inet:x3000:*:*:*:*:*:*:*:*'], 'vendor': 'GL.iNet', 'modules': ['NAS Command Service'], 'product': 'X3000', 'versions': [{'status': 'affected', 'version': '4.8.*'}, {'status': 'unaffected', 'version': '4.9.0'}]}, {'cpes': ['cpe:2.3:a:gl.inet:xe3000:*:*:*:*:*:*:*:*'], 'vendor': 'GL.iNet', 'modules': ['NAS Command Service'], 'product': 'XE3000', 'versions': [{'status': 'affected', 'version': '4.8.*'}, {'status': 'unaffected', 'version': '4.9.0'}]}] Added Description A vulnerability was detected in GL.iNet A1300, AX1800, AXT1800, MT2500, MT3000, MT6000, X3000 and XE3000 4.8.x. This issue affects some unknown processing of the file /usr/bin/gl_nas_sys of the component NAS Command Service. The manipulation results in os command injection. The attack may be launched remotely. Upgrading to version 4.9.0 is capable of addressing this issue. It is suggested to upgrade the affected component. The vendor explains: "After our investigation, we have confirmed that the vulnerability described (...) does indeed exist." Added CVSS V4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L/E:X/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:C/C:L/I:L/A:L Added CVSS V2 (AV:N/AC:L/Au:N/C:P/I:P/A:P) Added CWE CWE-78 Added CWE CWE-77 Added Reference https://github.com/gl-inet/CVE-issues/blob/main/4.0.0/NAS%20Host-header%20bypass%20to%20unauthenticated%20root%20RCE.md Added Reference https://vuldb.com/cve/CVE-2026-19983 Added Reference https://vuldb.com/submit/873919 Added Reference https://vuldb.com/vuln/391165 Added Reference https://vuldb.com/vuln/391165/cti