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Vulnerability record · CVE-2023-33620 · published 13 June 2023

CVE-2023-33620: Gl-inet gl-ar750s firmware insufficiently protected credentials vulnerability

Gl Inet · Gl Ar750s Firmware

GL.iNET GL-AR750S-Ext firmware v3.215 uses an insecure protocol in its communications which allows attackers to eavesdrop via a man-in-the-middle attack.

5.9 CVSS 3.1 Medium EPSS 0.53% · top 56.6% CWE-522 · Insufficiently protected credentials
5.9CVSS 3.1 base score
0.53%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References, 2 tagged exploit
9 Jul 2026Last modified by NVD

Description

GL.iNET GL-AR750S-Ext firmware v3.215 uses an insecure protocol in its communications which allows attackers to eavesdrop via a man-in-the-middle attack.

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://justinapplegate.me/2023/glinet-CVE-2023-33620/ ExploitThird Party Advisory
https://justinapplegate.me/2023/glinet-CVE-2023-33620/ ExploitThird Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2023-50919GL.iNet router NGINX authentication bypass via Lua pattern matchingGL.iNet devices before firmware 4.5.0 contain an authentication bypass in the NGINX web interface caused by improper Lua string pattern matching. A r…EPSS 48%analysed9.8CVE-2023-50921Gl-inet gl-mt1300 firmware improper privilege management vulnerabilityAn issue was discovered on GL.iNet devices through 4.5.0. Attackers can invoke the add_user interface in the system module to gain root privileges. T…EPSS 0.52%9.8CVE-2023-31475Gl-inet gl-s20 firmware classic buffer overflow vulnerabilityAn issue was discovered on GL.iNet devices before 3.216. The function guci2_get() found in libglutil.so has a buffer overflow when an item is request…EPSS 14%9.8CVE-2023-31471Gl-inet gl-s20 firmware vulnerabilityAn issue was discovered on GL.iNet devices before 3.216. Through the software installation feature, it is possible to install arbitrary software, suc…EPSS 1.1%7.8CVE-2023-50445Gl-inet gl-mt1300 firmware os command injection vulnerabilityShell Injection vulnerability GL.iNet A1300 v4.4.6, AX1800 v4.4.6, AXT1800 v4.4.6, MT3000 v4.4.6, MT2500 v4.4.6, MT6000 v4.5.0, MT1300 v4.3.7, MT300N…EPSS 9.1%7.5CVE-2023-31477Gl-inet gl-s20 firmware path traversal vulnerabilityA path traversal issue was discovered on GL.iNet devices before 3.216. Through the file sharing feature, it is possible to share an arbitrary directo…EPSS 0.94%7.5CVE-2023-31478Gl-inet gl-s20 firmware vulnerabilityAn issue was discovered on GL.iNet devices before 3.216. An API endpoint reveals information about the Wi-Fi configuration, including the SSID and ke…EPSS 30%7.5CVE-2023-31474Gl-inet gl-s20 firmware vulnerabilityAn issue was discovered on GL.iNet devices before 3.216. Through the software installation feature, it is possible to inject arbitrary parameters in …EPSS 0.82%

Source: NIST National Vulnerability Database (record CVE-2023-33620), CISA KEV, FIRST EPSS (scores of 2026-10-09). This page is refreshed as NVD updates the record.