CVE-2019-9677

Name: CVE-2019-9677
Creator: NVD / NIST
Published: 2019-09-18T19:15:10.297+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 1.14%

Last modified Jun 17, 2026

CVE-2019-9677 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. The specific fields of CGI interface of some Dahua products are not strictly verified, an attacker can cause a buffer overflow by constructing malicious packets. Affected products include: IPC-HDW1X2X,IPC-HFW1X2X,IPC-HDW2X2X,IPC-HFW2X2X,IPC-HDW4X2X,IPC-HFW4X2X,IPC-HDBW4X2X,IPC-HDW5X2X,IPC-HFW5X2X for versions which Build time is before August 18, 2019.. EPSS estimates a 1.14% chance of exploitation in the next 30 days.

Description

The specific fields of CGI interface of some Dahua products are not strictly verified, an attacker can cause a buffer overflow by constructing malicious packets. Affected products include: IPC-HDW1X2X,IPC-HFW1X2X,IPC-HDW2X2X,IPC-HFW2X2X,IPC-HDW4X2X,IPC-HFW4X2X,IPC-HDBW4X2X,IPC-HDW5X2X,IPC-HFW5X2X for versions which Build time is before August 18, 2019.

Metrics

CVSS 3.1

9.8/10

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

EPSS Probability

1.14%

62.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-120

Affected Software

Vendor	Product	Versions
Dahuasecurity	Ipc-Hdw1x2x Firmware	< 2019-08-18
Dahuasecurity	Ipc-Hfw1x2x Firmware	< 2019-08-18
Dahuasecurity	Ipc-Hdw2x2x Firmware	< 2019-08-18
Dahuasecurity	Ipc-Hfw2x2x Firmware	< 2019-08-18
Dahuasecurity	Ipc-Hdw4x2x Firmware	< 2019-08-18
Dahuasecurity	Ipc-Hfw4x2x Firmware	< 2019-08-18
Dahuasecurity	Ipc-Hdbw4x2x Firmware	< 2019-08-18
Dahuasecurity	Ipc-Hdw5x2x Firmware	< 2019-08-18
Dahuasecurity	Ipc-Hfw5x2x Firmware	< 2019-08-18

References

https://www.dahuasecurity.com/support/cybersecurity/details/637Patch, Vendor Advisory
https://www.dahuasecurity.com/support/cybersecurity/details/637Patch, Vendor Advisory

Timeline

Published: Sep 18, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-9677?

How severe is CVE-2019-9677?

CVE-2019-9677 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 1.14% probability of exploitation in the next 30 days.

How do I fix CVE-2019-9677?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-9677?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST