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Vulnerability record · CVE-2023-31998 · published 18 July 2023

CVE-2023-31998: Ui edgemax edgerouter firmware out-of-bounds write vulnerability

Ui · Edgemax Edgerouter Firmware

A heap overflow vulnerability found in EdgeRouters and Aircubes allows a malicious actor to interrupt UPnP service to said devices.

7.5 CVSS 3.1 High EPSS 0.80% · top 45.3% CWE-787 · Out-of-bounds writeCWE-120 · Classic buffer overflow
7.5CVSS 3.1 base score
0.80%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

A heap overflow vulnerability found in EdgeRouters and Aircubes allows a malicious actor to interrupt UPnP service to said devices.

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

Affected products

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

References

LinkTags
https://community.ui.com/releases/Security-Advisory-Bulletin-033-033/17f7c7c0-830b-4625-a2ee-e90e514e7b0f PatchVendor Advisory
https://community.ui.com/releases/Security-Advisory-Bulletin-033-033/17f7c7c0-830b-4625-a2ee-e90e514e7b0f PatchVendor Advisory

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Related vulnerabilities

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

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Source: NIST National Vulnerability Database (record CVE-2023-31998), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.