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CVE-2018-20305

31
FAUCET Score

CVE-2018-20305 describes a critical stack-based buffer overflow vulnerability in D-Link DIR-816 A2 1.10 B05 devices, specifically within the /goform/form2userconfig.cgi handler. This flaw allows unauthenticated remote code execution by providing an overly long password to the "newpass" parameter, overwriting a return address. With a CVSS score of 9.8, this vulnerability poses a severe risk due to its network-based attack vector, low attack complexity, and high impact on confidentiality, integrity, and availability. While no active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion has been observed, the high FAUCET Risk Score of 90/100 indicates its potential severity.

Impacted Technologies

VendorProductVersion(s)CPE
1.10b05CPE matchmatch criteria
cpe:2.3:o:d-link:dir-816_a2_firmware:1.10b05:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

9.8CRITICAL

CVSS:3.0/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
3.0

Exploit Intelligence

EPSS Score
4.07%
Probability of exploitation in next 30 days
EPSS Percentile
89.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0407 is in the 83rd percentile among its peer group of 36,835 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

No media coverage found for this CVE.

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

github.com / RootSoull/Vuln-Poc/tree/master/D-Link/DIR-816
ExploitThird Party Advisory