How severe is CVE-2016-5681?

CVE-2016-5681 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-2016-5681 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 12% (96th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2016-5681?

CVE-2016-5681 primarily affects Dlink Dir-868l Firmware. In total, 10 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2016-5681?

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-2016-5681 published?

CVE-2016-5681 was published on 2016-08-25 and last updated on 2026-06-17.

CVE-2016-5681

CVE-2016-5681 is a critical-severity vulnerability in Dlink Dir-868l Firmware with a CVSS 3.x base score of 9.8. Its EPSS exploit-prediction score of 12% places it in the 96th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-119.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 9.3
EPSS exploit prediction: 12% (96th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-119
Affected product: Dlink Dir-868l Firmware
Published: 2016-08-25
Last modified: 2026-06-17

Description

Stack-based buffer overflow in dws/api/Login on D-Link DIR-850L B1 2.07 before 2.07WWB05, DIR-817 Ax, DIR-818LW Bx before 2.05b03beta03, DIR-822 C1 3.01 before 3.01WWb02, DIR-823 A1 1.00 before 1.00WWb05, DIR-895L A1 1.11 before 1.11WWb04, DIR-890L A1 1.09 before 1.09b14, DIR-885L A1 1.11 before 1.11WWb07, DIR-880L A1 1.07 before 1.07WWb08, DIR-868L B1 2.03 before 2.03WWb01, and DIR-868L C1 3.00 before 3.00WWb01 devices allows remote attackers to execute arbitrary code via a long session cookie.

Frequently asked questions

What is CVE-2016-5681?: Stack-based buffer overflow in dws/api/Login on D-Link DIR-850L B1 2.07 before 2.07WWB05, DIR-817 Ax, DIR-818LW Bx before 2.05b03beta03, DIR-822 C1 3.01 before 3.01WWb02, DIR-823 A1 1.00 before 1.00WWb05, DIR-895L A1 1.11 before 1.11WWb04, DIR-890L A1 1.09 before 1.09b14, DIR-885L A1 1.11 before 1.11WWb07, DIR-880L A1 1.07 before 1.07WWb08, DIR-868L B1 2.03 before 2.03WWb01, and DIR-868L C1 3.00 before 3.00WWb01 devices allows remote attackers to execute arbitrary code via a long session cookie.
How severe is CVE-2016-5681?: CVE-2016-5681 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-2016-5681 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 12% (96th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2016-5681?: CVE-2016-5681 primarily affects Dlink Dir-868l Firmware. In total, 10 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2016-5681?: 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-2016-5681 published?: CVE-2016-5681 was published on 2016-08-25 and last updated on 2026-06-17.

References

Affected products (10)

cpe:2.3:o:dlink:dir-868l_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:dlink:dir-822_firmware:3.01:*:*:*:*:*:*:*
cpe:2.3:o:d-link:dir-880l_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:d-link:dir-850l_firmare:*:*:*:*:*:*:*:*
cpe:2.3:o:d-link:dir-895l_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:d-link:dir-817l\(w\)_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:d-link:dir-818l\(w\)_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:d-link:dir-890l_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:d-link:dir-823_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:d-link:dir-885l_firmware:*:*:*:*:*:*:*:*

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