CVE-2024-39947 — A vulnerability has been found in Dahua products

A vulnerability has been found in Dahua products.After obtaining the ordinary user's username and password, the attacker can send a carefully crafted data packet to the interface with vulnerabilities, causing the device to crash.

01What is this vulnerability?

A vulnerability has been found in Dahua products.After obtaining the ordinary user's username and password, the attacker can send a carefully crafted data packet to the interface with vulnerabilities, causing the device to crash.

02Affected products

Vendor	Product	Versions
Dahua	NVR4XXX	NVR4XXX Versions which Build time before 2023/12/13

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Open the Sigma generator with a pre-filled prompt for this CVE to draft a starting detection in your stack of choice:

Open in Sigma generator →

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2024-07-31T03:22:09.786Z
• Last modified: 2024-10-27T21:48:18.607Z

09References

• www.dahuasecurity.com — https://www.dahuasecurity.com/aboutUs/trustedCenter/details/768