CVE-2019-10891

Name: CVE-2019-10891
Creator: NVD / NIST
Published: 2019-09-06T20:15:11.003+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 19.44%

Last modified Jun 17, 2026

CVE-2019-10891 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. An issue was discovered in D-Link DIR-806 devices. There is a command injection in function hnap_main, which calls system() without checking the parameter that can be controlled by user, and finally allows remote attackers to execute arbitrary shell commands with a special HTTP header.. EPSS estimates a 19.44% chance of exploitation in the next 30 days.

Description

An issue was discovered in D-Link DIR-806 devices. There is a command injection in function hnap_main, which calls system() without checking the parameter that can be controlled by user, and finally allows remote attackers to execute arbitrary shell commands with a special HTTP header.

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

19.44%

97.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Dlink	Dir-806 Firmware	All versions

References

https://github.com/Kirin-say/Vulnerabilities/blob/master/DIR-806_Code_Injection.mdExploit, Third Party Advisory
https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10282
https://github.com/Kirin-say/Vulnerabilities/blob/master/DIR-806_Code_Injection.mdExploit, Third Party Advisory

Timeline

Published: Sep 6, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-10891?

How severe is CVE-2019-10891?

CVE-2019-10891 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 19.44% probability of exploitation in the next 30 days.

How do I fix CVE-2019-10891?

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-2019-10891?

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

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Source: NVD / NIST