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CVE-2016-5681

39
FAUCET Score

CVE-2016-5681 is a critical stack-based buffer overflow vulnerability affecting multiple D-Link DIR series routers, specifically within the dws/api/Login function. This flaw allows unauthenticated remote attackers to execute arbitrary code on affected devices by sending a crafted, long session cookie. With a CVSS score of 9.8 (CRITICAL), the vulnerability is easily exploitable over the network with low attack complexity, leading to complete compromise of confidentiality, integrity, and availability. While there is no evidence of active exploitation or public exploit code in Metasploit or ExploitDB, the vulnerability has garnered some community discussion and media coverage, indicating awareness within the security community.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2.03CPE matchmatch criteria
cpe:2.3:o:dlink:dir-868l_firmware:*:*:*:*:*:*:*:*
3.01CPE matchmatch criteria
cpe:2.3:o:dlink:dir-822_firmware:3.01:*:*:*:*:*:*:*
<= 1.07CPE matchmatch criteria
cpe:2.3:o:d-link:dir-880l_firmware:*:*:*:*:*:*:*:*
<= 2.07CPE matchmatch criteria
cpe:2.3:o:d-link:dir-850l_firmare:*:*:*:*:*:*:*:*
<= 1.11CPE matchmatch criteria
cpe:2.3:o:d-link:dir-895l_firmware:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
11.93%
Probability of exploitation in next 30 days
EPSS Percentile
95.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.1193 is in the 91st percentile among its peer group of 36,821 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

supportannouncement.us.dlink.com / announcement/publication.aspx
Vendor Advisory
kb.cert.org / vuls/id/332115
Third Party AdvisoryUS Government Resource
securityfocus.com / bid/92427
Third Party AdvisoryVDB Entry