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.

Published: 2016-08-25 Last update: 2026-05-06 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2016-5681 is rated High Risk (78.1/100): CVSS Critical severity, with high exploitation likelihood (EPSS 35.33%, 97th percentile). EPSS ranks this CVE among the most likely to be exploited in the near term. EPSS rose +6.07% over the last day, indicating growing attacker interest. High exploitation likelihood—assess exposure and prioritize remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2016-5681

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-01-26 29.26% 35.33% +6.07%
2 2025-12-11 20.76% 29.26% +8.50%
3 2025-09-14 — 20.76% —

Full EPSS history (15 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2016-5681

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.8 3.1 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 5.9 [email protected]
9.3 2.0 HIGH
AV:N/AC:M/Au:N/C:C/I:C/A:C Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:C)
Complete confidentiality impact.
Integrity impact (I:C)
Complete integrity impact.
Availability impact (A:C)
Complete availability impact.
 8.6 10.0 [email protected]

Weakness enumeration for CVE-2016-5681

Affected software / configurations for CVE-2016-5681

Vendor Product Version Raw CPE
dlink dir-868l_firmware <= 2.03 cpe:2.3:o:dlink:dir-868l_firmware:*:*:*:*:*:*:*:*
dlink dir-822_firmware 3.01 cpe:2.3:o:dlink:dir-822_firmware:3.01:*:*:*:*:*:*:*
d-link dir-880l_firmware <= 1.07 cpe:2.3:o:d-link:dir-880l_firmware:*:*:*:*:*:*:*:*
d-link dir-850l_firmare <= 2.07 cpe:2.3:o:d-link:dir-850l_firmare:*:*:*:*:*:*:*:*
d-link dir-895l_firmware <= 1.11 cpe:2.3:o:d-link:dir-895l_firmware:*:*:*:*:*:*:*:*
d-link dir-817l\(w\)_firmware <= jul.2016 cpe:2.3:o:d-link:dir-817l\(w\)_firmware:*:*:*:*:*:*:*:*
d-link dir-818l\(w\)_firmware <= 2.05 cpe:2.3:o:d-link:dir-818l\(w\)_firmware:*:*:*:*:*:*:*:*
d-link dir-890l_firmware <= 1.09 cpe:2.3:o:d-link:dir-890l_firmware:*:*:*:*:*:*:*:*
d-link dir-823_firmware <= 1.00 cpe:2.3:o:d-link:dir-823_firmware:*:*:*:*:*:*:*:*
d-link dir-885l_firmware <= 1.11 cpe:2.3:o:d-link:dir-885l_firmware:*:*:*:*:*:*:*:*
dlink dir-868l_firmware <= 3.00 cpe:2.3:o:dlink:dir-868l_firmware:*:*:*:*:*:*:*:*

References for CVE-2016-5681

cvelogic Threat Intelligence