CVE-2022-28571Public exploitNetwork attack vector

Authenticated command execution via CLI shell metacharacters

Published May 2, 2022 · Updated Aug 3, 2024

Command injection in D-Link DIR-882 A1 firmware 1.30B06 allows remote authenticated users to execute operating system commands via Telnet. The /usr/bin/cli constrained shell fails to reject the ampersand shell operator in a ping command, causing appended commands such as ps to run. Reachability requires Telnet access and the router administrator password; successful exploitation executes commands with the CLI process's privileges.

CVSS severity9.8
Critical
EPSS probability5.69%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Command injection in D-Link DIR-882 A1 firmware 1.30B06 allows remote authenticated users to execute operating system commands via Telnet. The /usr/bin/cli constrained shell fails to reject the ampersand shell operator in a ping command, causing appended commands such as ps to run. Reachability requires Telnet access and the router administrator password; successful exploitation executes commands with the CLI process's privileges.

The record

CVE
CVE-2022-28571
Published
May 2, 2022
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-78, T1059
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 2, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
5.8NIST NVDAV:A/AC:L/Au:N/C:P/I:P/A:P

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
T1059Command and Scripting Interpreter

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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