CVE-2024-22768Known exploitationPublic exploitNetwork attack vector

Authenticated OS command injection via timeserver parameter

Published Jan 23, 2024 · Updated May 30, 2025

Command injection in Hitron Systems DVR HVR-4781 1.03 through 4.02 allows remote authenticated users to execute OS commands. The /cgi-bin/system_ntp.cgi handler passes the timeserver POST parameter to a shell command without neutralizing command separators. Attackers must authenticate to the management interface; observed attacks use default credentials to install Mirai-based malware and enlist devices in a DDoS botnet.

CVSS severity7.4
High
EPSS probability0.56%
Next 30 days · Sep 16, 2026
Known exploitationReported
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Command injection in Hitron Systems DVR HVR-4781 1.03 through 4.02 allows remote authenticated users to execute OS commands. The /cgi-bin/system_ntp.cgi handler passes the timeserver POST parameter to a shell command without neutralizing command separators. Attackers must authenticate to the management interface; observed attacks use default credentials to install Mirai-based malware and enlist devices in a DDoS botnet.

The record

CVE
CVE-2024-22768
Published
Jan 23, 2024
Updated
May 30, 2025
Vendor
Hitron Systems
Product
DVR HVR-4781
Classifications
CWE-20, CAPEC-490, T0866
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 1, 2023Exploitation reportedInfectedSlurs Mirai-based Hitron DVR exploitation
  2. Jan 23, 2024CVE publishedPublication date reported by the CVE source.
  3. May 30, 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?

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

  1. Affected versionversion=1.03 <=4.02 changes=[{"at":"4.03","status":"unaffected"}]

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Hitron Systems · DVR HVR-4781version=1.03 <=4.02 changes=[{"at":"4.03","status":"unaffected"}]

Published CVSS scores

7.4KrCERT/CCCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/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
Privilegesauthenticated
Known exploitationReported
Public exploitPublished

Weakness, pattern, technique

CWE-20Improper Input Validation
CAPEC-490Amplification
T0866Exploitation of Remote Services

Public exploit references

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

Reported exploitation

Technologies

Your stack

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Your stack

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