dbcve.org
Improper Input ValidationWeakness · CWE-20

CVE-2025-34132

CRITICAL · 9.3 CVSS v4.0 Published 2025-07-16
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
100/100
Remediation priority · Urgent
Remotely reachable No privileges Zero-click

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
A command injection vulnerability exists in LILIN Digital Video Recorder (DVR) devices prior to firmware version 2.0b60_20200207 via the Server field in the NTPUpdate configuration. The web service at /z/zbin/dvr_box fails to properly sanitize input, allowing remote attackers to inject and execute arbitrary commands as root by supplying specially crafted XML data to the DVRPOST interface.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · high confidence

Command injection vulnerability in LILIN Digital Video Recorder devices allows remote attackers to execute arbitrary commands as root via specially crafted XML data sent to the /z/zbin/dvr_box endpoint. The Server field in NTPUpdate configuration fails to sanitize input properly.

MitigationUpdate firmware to version 2.0b60_20200207 or later. If immediate patching is not feasible, restrict network access to the DVR web management interface and disable remote administration.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Network
Complexity
Low
Privileges
None
Authentication
X
User interaction
None
Scope
X

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Identify LILIN DVR device on the network
    Check your device inventory or network scans for LILIN Digital Video Recorder products. Look for devices responding on typical DVR ports (80, 443, 8080, etc.) with LILIN web interface.
    Affected if The device is a LILIN DVR model and is accessible on the network
  2. Check firmware version against the fixed release
    Access the DVR web interface or use SNMP/API to retrieve the current firmware version. Compare it to 2.0b60_20200207.
    Affected if Firmware version is lower than 2.0b60_20200207 or cannot be determined
  3. Verify the /z/zbin/dvr_box endpoint is reachable
    Attempt an HTTP request to the /z/zbin/dvr_box path on the DVR's web server. A response (even an error) indicates the endpoint exists.
    Affected if The endpoint responds and the DVR is running vulnerable firmware
  4. Inspect NTP configuration for the Server field
    Access DVR settings through the web interface or API and locate the NTPUpdate configuration section. Examine the Server/NTP server field for unexpected characters or suspicious values.
    Affected if NTP server field contains shell metacharacters or non-standard server addresses that were not intentionally configured
  5. Confirm remote web management is enabled
    Check if the DVR web interface is accessible from outside the local network. Review firewall rules and access control lists governing the DVR's HTTP/HTTPS ports.
    Affected if The DVR management interface is exposed to untrusted networks (internet or guest networks)

A defender is affected if they operate a LILIN DVR with firmware below 2.0b60_20200207 that has its web interface (specifically the /z/zbin/dvr_box endpoint) accessible from a network where untrusted parties could send specially crafted XML to the NTPUpdate configuration.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Update firmware to version 2.0b60_20200207 or later. If immediate patching is not feasible, restrict network access to the DVR web management interface and disable remote administration.

Recommended fix High confidence

LILIN DVR firmware version 2.0b60_20200207 or later

  1. 1. Identify the LILIN DVR device model and current firmware version through the web interface or device documentation
  2. 2. Navigate to the vendor's official support website (www Meritlilin com or authorized channels) to obtain the firmware version 2.0b60_20200207 or later
  3. 3. Download the appropriate firmware update file for your specific DVR model
  4. 4. Access the DVR's web administration interface and locate the firmware upgrade or system update section
  5. 5. Upload and apply the firmware update following the vendor's documented upgrade procedure
  6. 6. After the update completes, verify the new firmware version is 2.0b60_20200207 or later
  7. 7. Confirm the NTPUpdate configuration functionality works correctly with the patched firmware
  8. 8. Consider changing default credentials and reviewing access controls post-update
Caveat Firmware updates on embedded devices may reset configuration to defaults; backup current settings before upgrading and restore afterward

Generated from the published advisory — verify against the referenced sources before acting.

Have this fixed Scoped from the published advisory
  • Consultation4.0 h
  • Implementation2.0 h
  • Testing4.0 h
  • Review / QA2.0 h
12.0 hours of engineering $2,120
Get help mitigating

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $3,392.

Scan for this in your stack

Free · runs locally
dbcve dependency scanner

Check whether your project pulls in CVE-2025-34132 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.

Get it on GitHub Scan in the browser

References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2025-34132 in production — separate from our analysis above.

No notes yet

Be the first to add a field note for this CVE — a mitigation you’ve verified, a version caveat, or a link to a working fix. Sign in above to contribute.

What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
  • No weaponised exploit code, or anything meant to cause harm
  • No spam, self-promotion, credentials, or personal data