TI-2021-21155 Aliases CVE-2021-46319 GHSA-mq76-pcfx-jm9r

Remote Code Execution (RCE) vulnerability exists in D-Link Router DIR-846…

MEDIUM 52CWE-78Published 2022-02-17 · Updated 2024-08-04

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Code execution
Confidentiality · integrity · availability: High · High · High
Fix status: No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-78.

Summary

Remote Code Execution (RCE) vulnerability exists in D-Link Router DIR-846 DIR846A1_FW100A43.bin and DIR846enFW100A53DLA-Retail.bin. Malicious users can use this vulnerability to use "\ " or backticks to bypass the shell metacharacters in the ssid0 or ssid1 parameters to execute arbitrary commands.This vulnerability is due to the fact that CVE-2019-17509 is not fully patched and can be bypassed by using line breaks or backticks on its basis.

Why it matters now

EPSS 0.06573 93rd percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
—	—	all versions	—	No fix listed	CNA

— Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 4

CPE	Versions	Role	Vendor
cpe:2.3:o:dlink:dir-846_firmware:100a43:::::::*	100a43	Vulnerable	D-Link Japan K.K.
cpe:2.3:h:dlink:dir-846:a1:::::::*	a1	Running on	D-Link Japan K.K.
cpe:2.3:o:dlink:dir-846_firmware:100a53dla:::::::*	100a53dla	Vulnerable	D-Link Japan K.K.
cpe:2.3:h:dlink:dir-846:-:::::::*	not specified by NVD	Running on	D-Link Japan K.K.

cpe:2.3:o:dlink:dir-846_firmware:100a43:*:*:*:*:*:*:* Versions 100a43 Vulnerable ·D-Link Japan K.K.
cpe:2.3:h:dlink:dir-846:a1:*:*:*:*:*:*:* Versions a1 Running on ·D-Link Japan K.K.
cpe:2.3:o:dlink:dir-846_firmware:100a53dla:*:*:*:*:*:*:* Versions 100a53dla Vulnerable ·D-Link Japan K.K.
cpe:2.3:h:dlink:dir-846:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·D-Link Japan K.K.

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2021-46319
2026-10-03 Alias added: GHSA-mq76-pcfx-jm9r

References

Exploit 1

https://github.com/doudoudedi/DIR-846_Command_Injection/blob/main/DIR-846_Command_Injection1.md

Advisory 1

https://www.dlink.com/en/security-bulletin/

TI-2023-16660 D-Link DIR-846 v1.00A52 was discovered to contain a remote command execution (RCE)… CVSS 3.1CRITICAL 9.8
TI-2020-13969 D-Link DIR-846 devices with firmware 100A35 allow remote attackers to execute arbitrary… CVSS 3.1CRITICAL 9.8
TI-2023-23172 D-Link Wireless MU-MIMO Gigabit AC1200 Router DIR-846 100A53DBR-Retail devices allow an… CVSS 3.1HIGH 8.8
TI-2022-23009 D-Link DIR-846 Firmware FW100A53DBR was discovered to contain a remote command execution… CVSS 3.1HIGH 8.8
TI-2021-21153 A Remote Command Execution (RCE) vulnerability exists in… CVSS 3.1CRITICAL 9.8
TI-2020-16717 HNAP1/control/SetMasterWLanSettings.php in D-Link D-Link Router DIR-846 DIR-846 A1_100.26… CVSS 3.1CRITICAL 9.8

See all 12 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences