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Vulnerability record · CVE-2022-31793 · published 4 August 2022

CVE-2022-31793: Inglorion muhttpd path traversal vulnerability

Inglorion · Muhttpd

do_request in request.c in muhttpd before 1.1.7 allows remote attackers to read arbitrary files by constructing a URL with a single character before a desired path on the filesystem. This occurs because the code skips over the first character when serving files. Arris NVG443, NVG599, NVG589, and NVG510 devices and Arris-derived BGW210 and BGW320 devices are affected.

7.5 CVSS 3.1 High EPSS 16% · top 3.2% CWE-22 · Path traversal
7.5CVSS 3.1 base score
16%EPSS exploitation probability, 30 days
NoNot in CISA KEV
7Affected product versions listed by NVD
9References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

do_request in request.c in muhttpd before 1.1.7 allows remote attackers to read arbitrary files by constructing a URL with a single character before a desired path on the filesystem. This occurs because the code skips over the first character when serving files. Arris NVG443, NVG599, NVG589, and NVG510 devices and Arris-derived BGW210 and BGW320 devices are affected.

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

Affected products

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

References

LinkTags
http://inglorion.net/software/muhttpd/ Third Party Advisory
https://blog.malwarebytes.com/exploits-and-vulnerabilities/2022/08/millions-of-arris-routers-are-vulnerable-to-path-trav Third Party Advisory
https://derekabdine.com/blog/2022-arris-advisory ExploitThird Party Advisory
https://kb.cert.org/vuls/id/495801 Third Party AdvisoryUS Government Resource
http://inglorion.net/software/muhttpd/ Third Party Advisory
https://blog.malwarebytes.com/exploits-and-vulnerabilities/2022/08/millions-of-arris-routers-are-vulnerable-to-path-trav Third Party Advisory
https://derekabdine.com/blog/2022-arris-advisory ExploitThird Party Advisory
https://kb.cert.org/vuls/id/495801 Third Party AdvisoryUS Government Resource
https://www.kb.cert.org/vuls/id/495801

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

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Source: NIST National Vulnerability Database (record CVE-2022-31793), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.