CVE-2022-42999Public exploitNetwork attack vector

Unauthenticated command execution via administrator fields

Published Oct 26, 2022 · Updated May 7, 2025

OS command injection in D-Link DIR-816 A2 1.10 B05 allows remote attackers to execute commands through the administrator settings endpoint. The setSysAdm handler directly executes content supplied in the admuser or admpass field, and the published proof of concept injects a semicolon-prefixed reboot command. No prior authentication is required; successful injection runs attacker-selected firmware commands, including a demonstrated router reboot.

CVSS severity7.5
High
EPSS probability2.69%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

OS command injection in D-Link DIR-816 A2 1.10 B05 allows remote attackers to execute commands through the administrator settings endpoint. The setSysAdm handler directly executes content supplied in the admuser or admpass field, and the published proof of concept injects a semicolon-prefixed reboot command. No prior authentication is required; successful injection runs attacker-selected firmware commands, including a demonstrated router reboot.

The record

CVE
CVE-2022-42999
Published
Oct 26, 2022
Updated
May 7, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-78, T1059.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 26, 2022CVE publishedPublication date reported by the CVE source.
  2. May 7, 2025Record 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 privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
T1059.004Unix Shell

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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