CVE-2024-22771Known exploitationPublic exploit

Authenticated command injection via NTP timeserver parameter

Published Jan 23, 2024 · Updated Oct 22, 2024

Command injection in Hitron Systems DVR LGUVR-4H 1.02 through 4.02 allows remote authenticated users to execute OS commands. The /cgi-bin/system_ntp.cgi handler inserts the attacker-controlled timeserver value into an operating-system command without neutralizing shell metacharacters. Access requires management authentication, but unchanged default administrator credentials enable device takeover and botnet enrollment.

CVSS severity7.4
High
EPSS probability0.50%
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 LGUVR-4H 1.02 through 4.02 allows remote authenticated users to execute OS commands. The /cgi-bin/system_ntp.cgi handler inserts the attacker-controlled timeserver value into an operating-system command without neutralizing shell metacharacters. Access requires management authentication, but unchanged default administrator credentials enable device takeover and botnet enrollment.

The record

CVE
CVE-2024-22771
Published
Jan 23, 2024
Updated
Oct 22, 2024
Vendor
Hitron Systems
Product
DVR LGUVR-4H
Classifications
CWE-798, CWE-20, T1190
Attack vector
adjacent
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 1, 2023Exploitation reportedInfectedSlurs exploitation of Hitron DVRs
  2. Jan 23, 2024CVE publishedPublication date reported by the CVE source.
  3. Oct 22, 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?

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

  1. Affected versionversion=1.02 <=4.02 changes=[{"at":"4.03","status":"unaffected"}]

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesauthenticated

What is affected?

Hitron Systems · DVR LGUVR-4Hversion=1.02 <=4.02 changes=[{"at":"4.03","status":"unaffected"}]
Hitron Systems · DVR LGUVR-4H Firmwareversion=01.02 <=4.02

Published CVSS scores

7.4KrCERT/CCCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
7.5NIST NVDCVSS: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.

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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
Privilegesauthenticated
Known exploitationReported
Public exploitPublished

Weakness, pattern, technique

CWE-798Use of Hard-coded Credentials
CWE-20Improper Input Validation
T1190Exploit Public-Facing Application

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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