CVE-2022-26670

Arbitrary command execution via unfiltered time settings

Published Apr 7, 2022 · Updated Sep 17, 2024

Command injection in D-Link DIR-878 firmware 1.20b05 and earlier allows remote attackers on the LAN to execute arbitrary system commands. A retained HTML test page passes unfiltered special characters from its time-configuration field into command execution. LAN access is required; TWCERT/CC reports no authentication, while D-Link describes a logged-in attacker, leaving the privilege gate disputed.

CVSS severity8.8
High
EPSS probability1.55%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Command injection in D-Link DIR-878 firmware 1.20b05 and earlier allows remote attackers on the LAN to execute arbitrary system commands. A retained HTML test page passes unfiltered special characters from its time-configuration field into command execution. LAN access is required; TWCERT/CC reports no authentication, while D-Link describes a logged-in attacker, leaving the privilege gate disputed.

The record

CVE
CVE-2022-26670
Published
Apr 7, 2022
Updated
Sep 17, 2024
Vendor
D-Link
Product
DIR-878
Classifications
CWE-78, T1059
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 7, 2022CVE publishedPublication date reported by the CVE source.
  2. Sep 17, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=unspecified <=1.20b05

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

D-Link · DIR-878version=unspecified <=1.20b05

Published CVSS scores

8.3NIST NVDAV:A/AC:L/Au:N/C:C/I:C/A:C
8.8TWCERT/CCCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/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)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

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

Public exploit references

No public exploit references are available in this record.

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

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo