How severe is CVE-2019-10892?

CVE-2019-10892 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2019-10892 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (81st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-10892?

CVE-2019-10892 affects Dlink Dir-806 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-10892?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2019-10892 published?

CVE-2019-10892 was published on 2019-09-06 and last updated on 2026-06-17.

CVE-2019-10892

CVE-2019-10892 is a critical-severity vulnerability in Dlink Dir-806 Firmware with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-787.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 10.0
EPSS exploit prediction: 2% (81st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-787
Affected product: Dlink Dir-806 Firmware
Published: 2019-09-06
Last modified: 2026-06-17

Description

An issue was discovered in D-Link DIR-806 devices. There is a stack-based buffer overflow in function hnap_main at /htdocs/cgibin. The function will call sprintf without checking the length of strings in parameters given by HTTP header and can be controlled by users. And it finally leads to a stack-based buffer overflow via a special HTTP header.

Frequently asked questions

What is CVE-2019-10892?: An issue was discovered in D-Link DIR-806 devices. There is a stack-based buffer overflow in function hnap_main at /htdocs/cgibin. The function will call sprintf without checking the length of strings in parameters given by HTTP header and can be controlled by users. And it finally leads to a stack-based buffer overflow via a special HTTP header.
How severe is CVE-2019-10892?: CVE-2019-10892 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2019-10892 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (81st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-10892?: CVE-2019-10892 affects Dlink Dir-806 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-10892?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2019-10892 published?: CVE-2019-10892 was published on 2019-09-06 and last updated on 2026-06-17.

References

https://github.com/Kirin-say/Vulnerabilities/blob/master/DIR-806_Stack_Overflow_to_Run_Shellcode.md

Affected products (1)

cpe:2.3:o:dlink:dir-806_firmware:1.0:*:*:*:*:*:*:*

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