CVE-2023-31477

CVE-2023-31477 is a high-severity vulnerability in Gl-inet Gl-s20 Firmware with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-22.

Key facts

• Severity: High (CVSS 3.x base score 7.5)
• EPSS exploit prediction: 1% (58th percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-22
• Affected product: Gl-inet Gl-s20 Firmware
• Published: 2023-05-11
• Last modified: 2026-06-17

Description

A path traversal issue was discovered on GL.iNet devices before 3.216. Through the file sharing feature, it is possible to share an arbitrary directory, such as /tmp or /etc, because there is no server-side restriction to limit sharing to the USB path.

Frequently asked questions

What is CVE-2023-31477?

A path traversal issue was discovered on GL.iNet devices before 3.216. Through the file sharing feature, it is possible to share an arbitrary directory, such as /tmp or /etc, because there is no server-side restriction to limit sharing to the USB path.

How severe is CVE-2023-31477?

CVE-2023-31477 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2023-31477 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (58th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-31477?

CVE-2023-31477 primarily affects Gl-inet Gl-s20 Firmware. In total, 32 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-31477?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2023-31477 published?

CVE-2023-31477 was published on 2023-05-11 and last updated on 2026-06-17.

References

• https://github.com/gl-inet/CVE-issues/blob/main/3.215/Path_Traversal.md
• https://www.gl-inet.com

Affected products (32)

• cpe:2.3:o:gl-inet:gl-s20_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:gl-inet:gl-x3000_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:gl-inet:gl-mt3000_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:gl-inet:gl-mt2500_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:gl-inet:gl-mt2500a_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:gl-inet:gl-axt1800_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:gl-inet:gl-a1300_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:gl-inet:gl-ax1800_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:gl-inet:gl-sft1200_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:gl-inet:gl-mt1300_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:gl-inet:gl-e750_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:gl-inet:gl-mv1000_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:gl-inet:gl-mv1000w_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:gl-inet:gl-s10_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:gl-inet:gl-s200_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:gl-inet:gl-s1300_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:gl-inet:gl-sf1200_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:gl-inet:gl-b1300_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:gl-inet:gl-b2200_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:gl-inet:gl-ap1300_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:gl-inet:gl-ap1300lte_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:gl-inet:gl-x1200_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:gl-inet:gl-x750_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:gl-inet:gl-x300b_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:gl-inet:gl-xe300_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:gl-inet:gl-ar750s_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:gl-inet:gl-ar750_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:gl-inet:gl-mifi_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:gl-inet:gl-mt300n-v2_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:gl-inet:gl-ar300m_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:gl-inet:gl-usb150_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:gl-inet:microuter-n300_firmware:*:*:*:*:*:*:*:*

More vulnerabilities in Gl-inet Gl-s20 Firmware

• CVE-2023-31475 — Critical (CVSS 9.8): An issue was discovered on GL.iNet devices before 3.216. The function guci2_get() found in libglutil.so has a buffer…
• CVE-2023-31471 — Critical (CVSS 9.8): An issue was discovered on GL.iNet devices before 3.216. Through the software installation feature, it is possible to…
• CVE-2023-31478 — High (CVSS 7.5): An issue was discovered on GL.iNet devices before 3.216. An API endpoint reveals information about the Wi-Fi…
• CVE-2023-31474 — High (CVSS 7.5): An issue was discovered on GL.iNet devices before 3.216. Through the software installation feature, it is possible to…
• CVE-2023-31472 — High (CVSS 7.5): An issue was discovered on GL.iNet devices before 3.216. There is an arbitrary file write in which an empty file can be…
• CVE-2023-31473 — Medium (CVSS 4.9): An issue was discovered on GL.iNet devices before 3.216. There is an arbitrary file write in which an empty file can be…

All CVEs affecting Gl-inet Gl-s20 Firmware →

Other CWE-22 (Path Traversal) vulnerabilities

• CVE-2026-76606 — Critical (CVSS 10.0): Joomla Extension - fabrikar.com - Path Traversal via image element in Fabrik < 4.7.3 - ???.
• CVE-2026-18051 — Critical (CVSS 10.0): The W3 Total Cache WordPress plugin before 2.10.5 does not properly validate the request path it uses to build cache…
• CVE-2026-74764 — Critical (CVSS 10.0): Pandora contains a path traversal vulnerability in its TAR archive extraction functionality. When processing a…
• CVE-2026-16940 — Critical (CVSS 10.0): The Custom Fields WordPress plugin before 1.5.1 does not validate a user-supplied file path before deletion, allowing…
• CVE-2026-67429 — Critical (CVSS 10.0): Flyto2 Core is an execution kernel for automation and AI-agent workflows. Prior to 2.26.6, image.download and related…
• CVE-2026-59555 — Critical (CVSS 10.0): Unauthenticated Arbitrary File Deletion in Participants Database <= 2.7.8.3 versions.

Browse all CWE-22 (Path Traversal) vulnerabilities →