CVE-2022-31793

HIGH
7.5
CVSS Score
Published: August 4, 2022 at 09:55 PM UTC
Updated: June 17, 2026 at 04:46 AM UTC
13 products affected across 2 vendorsNVG599 FirmwareNVG443 FirmwareMuhttpd

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Severity
HIGH7.5
Exploit prediction
EPSS 18%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

All versions
arris-bgw210 (same device)
All versions
arris-bgw320 (same device)
All versions
arris-nvg443 (same device)
All versions
arris-nvg510 (same device)
All versions
arris-nvg589 (same device)
All versions
arris-nvg599 (same device)
v < 1.1.7
Affected range stops below 1.1.7, so it looks safe — our inference, not a vendor statement
All versions
All versions
All versions

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (5)

x_refsource_MISCThird Party Advisory
http://inglorion.net/software/muhttpd/
x_refsource_MISCExploitThird Party Advisory
https://derekabdine.com/blog/2022-arris-advisory
x_refsource_MISCThird Party AdvisoryUS Government Resource
https://kb.cert.org/vuls/id/495801
Source: af854a3a-2127-422b-91ae-364da2661108
https://www.kb.cert.org/vuls/id/495801

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-22

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