CVE-2019-3948 — The Amcrest IP2M-841B V2

The Amcrest IP2M-841B V2.520.AC00.18.R, Dahua IPC-XXBXX V2.622.0000000.9.R, Dahua IPC HX5X3X and HX4X3X V2.800.0000008.0.R, Dahua DH-IPC HX883X and DH-IPC-HX863X V2.622.0000000.7.R, Dahua DH-SD4XXXXX V2.623.0000000.7.R, Dahua DH-SD5XXXXX V2.623.0000000.1.R, Dahua DH-SD6XXXXX V2.6

01What is this vulnerability?

The Amcrest IP2M-841B V2.520.AC00.18.R, Dahua IPC-XXBXX V2.622.0000000.9.R, Dahua IPC HX5X3X and HX4X3X V2.800.0000008.0.R, Dahua DH-IPC HX883X and DH-IPC-HX863X V2.622.0000000.7.R, Dahua DH-SD4XXXXX V2.623.0000000.7.R, Dahua DH-SD5XXXXX V2.623.0000000.1.R, Dahua DH-SD6XXXXX V2.640.0000000.2.R and V2.623.0000000.1.R, Dahua NVR5XX-4KS2 V3.216.0000006.0.R, Dahua NVR4XXX-4KS2 V3.216.0000006.0.R, and…

02Affected products

Vendor	Product	Versions
n	a / Dahua IPC	XXBXX — V2.622.0000000.9.R
n	a / Dahua IPC HX5X3X and HX4X3X	V2.800.0000008.0.R
n	a / Dahua DH	IPC HX883X and DH-IPC-HX863X — V2.622.0000000.7.R
n	a / Dahua DH	SD4XXXXX — V2.623.0000000.7.R
n	a / Dahua DH	SD5XXXXX — V2.623.0000000.1.R
n	a / Dahua DH	SD6XXXXX — V2.640.0000000.2.R and V2.623.0000000.1.R
n	a / Dahua NVR5XX	4KS2 — V3.216.0000006.0.R
n	a / Dahua NVR4XXX	4KS2 — V3.216.0000006.0.R and NVR2XXX-4KS2

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

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

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: 2019-07-29T21:47:27.000Z
• Last modified: 2024-08-04T19:26:27.619Z

09References

• www.tenable.com — https://www.tenable.com/security/research/tra-2019-36
• packetstormsecurity.com — http://packetstormsecurity.com/files/153813/Amcrest-Cameras-2.520.AC00.18.R-Unau…
• us.dahuasecurity.com — https://us.dahuasecurity.com/wp-content/uploads/2019/08/Cybersecurity_2019-08-02…
• www.dahuasecurity.com — https://www.dahuasecurity.com/support/cybersecurity/details/627?us