CVE-2021-46315

Dir 846 Firmware vulnerability

CVSS

9.8

EPSS

6.6%

EPSS pct

93th

Exploited

No known

Remote Command Execution (RCE) vulnerability exists in HNAP1/control/SetWizardConfig.php in D-Link Router DIR-846 DIR846A1_FW100A43.bin and DIR846enFW100A53DLA-Retail.bin. Malicoius users can use this vulnerability to use "\ " or backticks in the shell metacharacters in the ssid0 or ssid1 parameters to cause arbitrary command execution. Since CVE-2019-17510 vulnerability has not been patched and improved www/hnap1/control/setwizardconfig.php, can also use line breaks and backquotes to bypass.

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 6.6% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 93% of all scored CVEs.

Check your external exposure to CVE-2021-46315

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-2021-46315.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2021-46315

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2021-46315 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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