How severe is CVE-2023-31476?

CVE-2023-31476 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 none, integrity high, and availability none.

Is CVE-2023-31476 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-31476?

CVE-2023-31476 primarily affects Gl-inet Gl-mv1000w Firmware. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-31476?

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-2023-31476 published?

CVE-2023-31476 was published on 2023-05-09 and last updated on 2026-06-17.

CVE-2023-31476

CVE-2023-31476 is a high-severity vulnerability in Gl-inet Gl-mv1000w 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-77.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 1% (55th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-77
Affected product: Gl-inet Gl-mv1000w Firmware
Published: 2023-05-09
Last modified: 2026-06-17

Description

An issue was discovered on GL.iNet devices running firmware before 3.216. There is an arbitrary file write in which an empty file can be created almost anywhere on the filesystem, as long as the filename and path is no more than 6 characters (the working directory is /www).

Frequently asked questions

What is CVE-2023-31476?: An issue was discovered on GL.iNet devices running firmware before 3.216. There is an arbitrary file write in which an empty file can be created almost anywhere on the filesystem, as long as the filename and path is no more than 6 characters (the working directory is /www).
How severe is CVE-2023-31476?: CVE-2023-31476 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 none, integrity high, and availability none.
Is CVE-2023-31476 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-31476?: CVE-2023-31476 primarily affects Gl-inet Gl-mv1000w Firmware. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-31476?: 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-2023-31476 published?: CVE-2023-31476 was published on 2023-05-09 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:o:gl-inet:gl-mv1000w_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:gl-inet:gl-mv1000_firmware:*:*:*:*:*:*:*:*

More vulnerabilities in Gl-inet Gl-mv1000w 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-2023-31477 — High (CVSS 7.5): A path traversal issue was discovered on GL.iNet devices before 3.216. Through the file sharing feature, it is possible…
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…

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