CVE-2026-87827Known exploitationNetwork attack vector

Unauthenticated command execution via exposed system service

Published Sep 9, 2026 · Updated Sep 9, 2026

Remote command execution in KGUARD DVR firmware allows remote attackers to execute arbitrary system commands without authentication. An unidentified firmware program binds its command-execution service to all interfaces and accepts commands without authentication. Network access to the undisclosed service is sufficient for full DVR compromise and malware installation; Netlab withheld its port and protocol details.

CVSS severity10.0
Critical
EPSS probability1.07%
Next 30 days · Sep 16, 2026
Known exploitationReported
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

Remote command execution in KGUARD DVR firmware allows remote attackers to execute arbitrary system commands without authentication. An unidentified firmware program binds its command-execution service to all interfaces and accepts commands without authentication. Network access to the undisclosed service is sufficient for full DVR compromise and malware installation; Netlab withheld its port and protocol details.

The record

CVE
CVE-2026-87827
Published
Sep 9, 2026
Updated
Sep 9, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-1188, CAPEC-115, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 22, 2021Exploitation reportedMirai_ptea exploitation of KGUARD DVRs
  2. Jun 25, 2021Exploitation reportedMirai_aurora exploitation of KGUARD DVRs
  3. Sep 9, 2026CVE publishedPublication date reported by the CVE source.
  4. Sep 9, 2026Record 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?

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

10.0CIRCLCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA: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 exploitationReported
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-1188Insecure Default Initialization of Resource
CAPEC-115Authentication Bypass
T1190Exploit Public-Facing Application

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.

Reported exploitation

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