CVE-2021-46314

Dir 846 Firmware vulnerability

CVSS

9.8

EPSS

33.3%

EPSS pct

98th

Exploited

No known

A Remote Command Execution (RCE) vulnerability exists in HNAP1/control/SetNetworkTomographySettings.php of D-Link Router DIR-846 DIR846A1_FW100A43.bin and DIR846enFW100A53DLA-Retail.bin because backticks can be used for command injection when judging whether it is a reasonable domain name.

Affected vendor

Dlink

Affected product

Dir 846 Firmware

CVSS vector

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

Weakness type (CWE)

CWE-78 — OS Command Injection

Published

2022-02-17

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no privileges, no user interaction. Successful exploitation leads to high impact to confidentiality, high impact to integrity, high impact to availability.

Its EPSS score of 33.3% reflects a moderate probability of exploitation activity in the wild over the next 30 days, placing it above 98% of all scored CVEs.

Check your external exposure to CVE-2021-46314

Confirm whether Dlink Dir 846 Firmware is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2021-46314.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2021-46314

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2021-46314 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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