D-Link DIR-820L 1.05B03 was discovered to contain remote command execution (RCE) vulnerability via HTTP POST to get set ccp.

published 2022-03-27 4 y ago modified 2026-07-09 4 mo ago also EUVD-2022-30821

cvss: 9.8; version 3.1, CNA
cisa kev: Exploited; added 2022-09-08
epss: 91.6%; EPSS 91.6% chance of exploitation in 30 days, percentile 99.8%
public exploits: 0; none known

Patch / fix

cisa required action The impacted product is end-of-life and should be disconnected if still in use.

Timeline

2022-03-27 Published
2022-09-08 Added to CISA KEV
2022-09-29 CISA patch deadline
2025-01-29 CISA SSVC: exploitation active

Known exploited

Added: 4 y ago (2022-09-08)
Patch by: 2022-09-29 (4 y ago)
Ransomware: Not known
Required action: The impacted product is end-of-life and should be disconnected if still in use.
Vendor, product: D-Link, DIR-820L
CISA name: D-Link DIR-820L Remote Code Execution Vulnerability

ATT&CK techniques

How it is exploited and what it leads to, in MITRE ATT&CK terms.

T1190 Exploit Public-Facing Application exploitation
T1059 Command and Scripting Interpreter primary impact
T1499.002 Service Exhaustion Flood secondary impact

kev release 2025-07-28, att&ck v16.1. KEV to ATT&CK mappings by the MITRE Center for Threat-Informed Defense (Mappings Explorer, Apache-2.0). © 2026 The MITRE Corporation. This work is reproduced and distributed with the permission of The MITRE Corporation. Terms of use

CISA SSVC

Exploitation: Active, exploited in the wild
Automatable: yes
Technical impact: total
Assessed: 21 mo ago (2025-01-29)

Exploit prediction

91.63% chance of exploitation in the next 30 days, higher than 99.8% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

github.com https://github.com/skyedai910/Vuln/tree/master/DIR-820L/command_execution_0 referenced PoC, tagged "exploit" by a source, unverified
github.com https://github.com/zhizhuoshuma/cve_info_data/blob/ccaed4b94ba762eb8a8e003bfa762a7754b8182e/Vuln/Vuln/DIR-820L/command_execution_0/README.md referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CISA ADP	3.1	9.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD	3.1	9.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CNA	3.1	9.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD	2.0	7.5	AV:N/AC:L/Au:N/C:P/I:P/A:P

Classification

Weakness

CWE-78 Improper Neutralization of Special Elements used in an OS Command

References

github.com /skyedai910/Vuln/tree/master/DIR-820L/command_execution_0
broken-link, exploit, third-party-advisory
github.com /zhizhuoshuma/cve_info_data/blob/ccaed4b94ba762eb8a8e003bfa762a7754b8182e/Vuln/Vuln/DIR-820L/command_execution
exploit, third-party-advisory
dlink.com /en/security-bulletin/
not-applicable, vendor-advisory
cisa.gov /known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-26258
government-resource, us-government-resource

Sources

CVE List CVE-2022-26258
NVD CVE-2022-26258

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary