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CVE-2018-20872

20
FAUCET Score

CVE-2018-20872 describes a Cross-Site Request Forgery (CSRF) vulnerability in DrayTek routers, specifically in firmware versions released before May 23, 2018, allowing attackers to alter DNS or DHCP settings. This vulnerability has a CVSS score of 6.5 (Medium), indicating it can be exploited over a network with low complexity, requiring user interaction, and potentially leading to high impact on integrity without affecting confidentiality or availability. While the vulnerability is publicly known, there is no evidence of active exploitation, nor are there readily available exploit modules in common frameworks like Metasploit or Nuclei, and it has garnered minimal community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 2018-05-23CPE matchmatch criteria
cpe:2.3:o:i-lan:draytekl_firmware:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

6.5MEDIUM

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.51%
Probability of exploitation in next 30 days
EPSS Percentile
40.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0051 is in the 43rd percentile among its peer group of 26,209 CVEs.

Social Chatter

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

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

draytek.com / about/security-advisory/urgent-security-updates-to-draytek-routers