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Exploitation reportedNot in CISA KEV yet

CVE-2022-31793

Exploitation reported by one source. First attested on 2023-10-14 by GCVE · shadowserver.

  • Published2022-08-04
  • WeaknessCWE-22

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

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.

Timeline

dates in UTC
  1. 2022-08-0422:15CVE publishedNVD
  2. 2023-10-1414:42Listed as exploited by GCVEGCVE
  3. 2023-10-1414:42Exploitation first reportedGCVE

Observed activity

isMalicious corpus · updated 2026-11-03 15:37 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2022-31793?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2022-31793?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD
Arris bgw210 firmwareversion to verify
BranchAffectedFixed in
—all versionsno fix published
Arris bgw320 firmwareversion to verify
BranchAffectedFixed in
—all versionsno fix published
Arris nvg443 firmwareversion to verify
BranchAffectedFixed in
—all versionsno fix published

4 more products in the sources.

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

No fix published by the sources we read yet. NVD record

Detection

read 2026-11-02 22:42 UTC
Nuclei template
available
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
1 repository, unverifiedxpgdgit/CVE-2022-31793
PoC-in-GitHub
Metasploit modules
none listed
Metasploit Framework

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Published
2022-08-04
Last Modified
2026-06-17
NVD status
Modified

Frequently asked questions

What is CVE-2022-31793?

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.

Is CVE-2022-31793 actively exploited?

Active exploitation of CVE-2022-31793 has not been confirmed. Its EPSS score was 17.7% on 2026-11-03, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2022-31793?

CVE-2022-31793 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

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Sources for this record