Auth bypass in Amcrest Ip2m-841b
CVE-2019-3948
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 NVR2XXX-4KS2 do not require authentication to access the HTTP endpoint /videotalk. An unauthenticated, remote person can connect to this endpoint and potentionally listen to the audio of the capturing device.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.250 (97.9th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 98th percentile — 97.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.250 · newest: 0.250 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.tenable.com/security/research/tra-2019-36 (Exploit, Third Party Advisory)
- packetstormsecurity.com/files/153813/Amcrest-Cameras-2.520.AC00.18.R-Unauthenti… (Exploit, VDB Entry, Third Party Advisory)
- us.dahuasecurity.com/wp-content/uploads/2019/08/Cybersecurity_2019-08-02.pdf
- www.dahuasecurity.com/support/cybersecurity/details/627
Frequently asked questions
- What is CVE-2019-3948?
- CVE-2019-3948 is a high-severity vulnerability in Amcrest Ip2m-841b, classified under Missing Authentication for Critical Function. CVSS score: 7.5/10. Published 2019-07-29.
- How severe is CVE-2019-3948?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2019-3948 known to be exploited?
- 10 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.