CVE-2022-30564
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 · uneditedSome Dahua embedded products have a vulnerability of unauthorized modification of the device timestamp. By sending a specially crafted packet to the vulnerable interface, an attacker can modify the device system time.
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 confidenceDahua embedded devices contain an improper authorization vulnerability allowing unauthenticated attackers to modify the system clock by sending specially crafted packets to a specific network interface. This time modification could enable log tampering, bypass time-based authentication controls, or facilitate other time-dependent attacks.
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< 2.800.0000000.4.r.210708< 2.800.0000000.4.r.210708< 2.800.0000000.4.r.210708< 2.840.0000000.18.r.220629< 2.840.0000000.18.r.220629< 2.840.0000000.18.r.220629< 2.840.0000000.18.r.220629< 2.812.0000032.2.r.220804CVSS 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
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- Low
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
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 checksWork through these to decide whether this CVE applies to you.
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Identify the Dahua device modelAccess the device web interface or check the device label to determine the exact model number (e.g., HF71242F, HF7442F, HF5241F, SD5A225GB)Affected if The device model matches one of the affected models listed in the CVE (HF71242F, HF7442F, HF7842F, HF5241F, HF5442F, HF5541F, HF5842F, or SD5A225GB)
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Check the installed firmware versionLog into the device web interface and navigate to the System or About section to view the firmware version; alternatively, use the ONVIF or manufacturer API to query the firmware versionAffected if The firmware version is lower than the fixed version for your model (2.800.0000000.4.r.210708 for HF7x models, 2.840.0000000.18.r.220629 for HF5x models, or 2.812.0000032.2.r.220804 for SD5A225GB)
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Verify network exposure of the management interfaceCheck firewall rules, router configurations, or VLAN settings to determine if the device management port (typically 80/443 or custom ports) is accessible from untrusted networksAffected if The device management interface is reachable from the internet or an untrusted network segment without proper access controls
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Inspect device logs for timestamp anomaliesReview the device system logs through the web interface or syslog export for entries showing unexpected or unauthorized time changesAffected if Logs contain timestamp modification events that were not performed by legitimate administrators
The device is affected if it is a listed model running firmware versions below the specified thresholds AND its management interface is accessible to unauthenticated network attackers.
Generated from the published advisory. Verify against your own configuration.
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 · scoped2.800.0000000.4.r.2107082.812.0000032.2.r.2208042.840.0000000.18.r.220629
Apply vendor firmware updates when available. Restrict network access to management interfaces via firewall rules or VLAN segmentation. Monitor device logs for unexpected timestamp changes.
For IPC HFx models: firmware version 2.800.0000000.4.r.210708 or later; for IPC HFx Ze models: firmware version 2.840.0000000.18.r.220629 or later; for SD5A225GB HNR: firmware version 2.812.0000032.2.r.220804 or later
- 1. Identify the exact model number of the affected Dahua device from the list: HF71242f Z X, HF7442f Z X, HF7842f Z X, HF5241f Ze, HF5442f Ze, HF5541f Ze, HF5842f Ze, or SD5A225GB HNR
- 2. Access the device's web interface or management console
- 3. Navigate to the firmware version information section to confirm the current installed firmware version
- 4. Download the latest firmware from the official Dahua Security support website (www.dahuasecurity.com) for your specific device model
- 5. Follow Dahua's standard firmware upgrade procedure, which typically involves uploading the firmware file through the web interface or using the ConfigTool utility
- 6. After upgrade, verify the new firmware version matches or exceeds the fixed release version for your device model
- 7. Confirm the timestamp can no longer be modified without proper authentication
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation3.0 h
- Implementation4.0 h
- Testing2.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2022-30564 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2022-30564 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Version or environment caveats, and links to real fixes
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