Sd6al FirmwareOperating system · Dahuasecurity

CVE-2019-9682

HIGH · 8.1 CVSS v3.1 Published 2020-05-13
Fix available
A fix is available. Upgrade to 2019-12 or later.
See remediation →
90/100
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
Dahua devices with Build time before December 2019 use strong security login mode by default, but in order to be compatible with the normal login of early devices, some devices retain the weak security login mode that users can control. If the user uses a weak security login method, an attacker can monitor the device network to intercept network packets to attack the device. So it is recommended that the user disable this login method.

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 · moderate confidence

Dahua surveillance devices manufactured before December 2019 include a weak security login mode retained for backward compatibility with legacy devices. When users enable this weak mode, network traffic can be intercepted by attackers, allowing credential theft or session hijacking due to inadequate encryption or authentication mechanisms.

MitigationDisable the weak security login mode on affected Dahua devices and ensure only strong security login (introduced as default post-December 2019) is enabled. Verify that all device firmware is updated to the latest secure build.

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

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
Sd6al FirmwareOperating system
Affected:< 2019-12
Sd5a FirmwareOperating system
Affected:< 2019-12
Sd1a FirmwareOperating system
Affected:< 2019-12
Ptz1a FirmwareOperating system
Affected:< 2019-12
Sd50 FirmwareOperating system
Affected:< 2019-12
Sd52c FirmwareOperating system
Affected:< 2019-12
Ipc Hx5842h FirmwareOperating system
Affected:< 2019-12
Ipc Hx7842h FirmwareOperating system
Affected:< 2019-12

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
High
Privileges
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

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 the Dahua device model
    Locate the device label or access the device web interface or management console to confirm the exact model number (e.g., Sd6al, Sd5a, Sd1a, Ptz1a, Sd50, Sd52c, Ipc Hx5842h, Ipc Hx7842h)
    Affected if The device model matches one of the affected product lines listed in the CVE
  2. Check the installed firmware version
    Access the device web interface (typically via browser to the device IP), navigate to the System or Device Info section, and record the firmware version date. Alternatively, use the device's CLI or management software if available
    Affected if The firmware version date is earlier than December 2019 (e.g., showing a date in 2019 before December)
  3. Verify the security login mode configuration
    In the device web interface, go to Security or Login Settings and look for an option related to 'weak security mode', 'legacy login', 'backward compatibility', or similar. Check whether this mode is enabled or disabled
    Affected if The weak security login mode is explicitly enabled in the device settings

The device is affected if it is one of the listed models running firmware dated before December 2019 AND has the weak security login mode enabled, allowing unauthenticated network interception of credentials.

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.

From vendor data
Upgrade available Upgrade to 2019-12 or later
Fixed in 2019-12
Interim mitigation

Disable the weak security login mode on affected Dahua devices and ensure only strong security login (introduced as default post-December 2019) is enabled. Verify that all device firmware is updated to the latest secure build.

Fix this in Sd6al Firmware Scoped from the published advisory
  • Consultation2.0 h
  • Implementation3.0 h
  • Testing2.0 h
  • Review / QA1.0 h
8.0 hours of engineering $1,420
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Scan for this in your stack

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dbcve dependency scanner

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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-2019-9682 in production — separate from our analysis above.

No notes yet

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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