The specific fields of CGI interface of some Dahua products are not strictly verified, an attacker can cause a buffer overflow by construct…

published 2019-09-18 7y ago modified 2026-06-17 4mo ago also EUVD-2019-19043

cvss: 9.8; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 1.1%; EPSS 1.1% chance of exploitation in 30 days, percentile 66%
public exploits: 0; none known

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.

Patch / fix

fixed in 9 links 1

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

dahuasecurity.com/support/cybersecurity/details/637 advisory

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Exploit prediction

1.14% chance of exploitation in the next 30 days, higher than 66% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
NVD	3.1	9.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD	2.0	7.5	AV:N/AC:L/Au:N/C:P/I:P/A:P

Affected products

Dahua Technology IPC-HDW1X2X,IPC-HFW1X2X,IPC-HDW2X2X,IPC-HFW2X2X,IPC-HDW4X2X,IPC-HFW4X2X,IPC-HDBW4X2X,IPC-HDW5X2X,IPC-HFW5X2X

Classification

Weakness

CWE-120 Buffer Copy without Checking Size of Input

References

dahuasecurity.com /support/cybersecurity/details/637
patch, vendor-advisory

Sources

CVE List CVE-2019-9677
NVD CVE-2019-9677

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