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CVE-2020-19664

29
FAUCET Score

CVE-2020-19664 is a critical remote command execution vulnerability affecting DrayTek Vigor2960 routers, specifically firmware version 1.5.1. This flaw allows an authenticated attacker to execute arbitrary commands on the device by injecting shell metacharacters into the toLogin2FA action within mainfunction.cgi. With a CVSS score of 8.8 (HIGH), successful exploitation grants full confidentiality, integrity, and availability impact, requiring only low privileges and no user interaction. While the vulnerability is severe, there is currently no public exploit code available, nor any evidence of active exploitation or significant community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
<= 1.5.1CPE matchmatch criteria
cpe:2.3:o:draytek:vigor2960_firmware:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.8HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
5.31%
Probability of exploitation in next 30 days
EPSS Percentile
91.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0531 is in the 91st percentile among its peer group of 17,844 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 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

Vendor Patches (7)

capnprotovendor investigatingvia llm_extracted
View patch
ciscovendor investigatingvia llm_extracted
View patch
hedgedocvendor investigatingvia llm_extracted
View patch
hpvendor investigatingvia llm_extracted
View patch
jenkinsvendor investigatingvia llm_extracted
View patch
lycheeorgvendor investigatingvia llm_extracted
View patch
yokogawavendor investigatingvia llm_extracted
View patch

Vendor Advisories (7)

yokogawallm-yokogawa-a07bbbdf5b449121

Vigor3900 / Vigor2960 / Vigor300B Remote code injection/execution Vulnerability (CVE-2020-19664)

Jan 8, 2021
lycheeorgllm-lycheeorg-6b3e9de1428d67f8

Vigor3900 / Vigor2960 / Vigor300B Remote code injection/execution Vulnerability (CVE-2020-19664)

Jan 8, 2021
jenkinsllm-jenkins-5b69a51436a5b2d0

Vigor3900 / Vigor2960 / Vigor300B Remote code injection/execution Vulnerability (CVE-2020-19664)

Jan 8, 2021
hpllm-hp-a8aa2413cfc5a042

Vigor3900 / Vigor2960 / Vigor300B Remote code injection/execution Vulnerability (CVE-2020-19664)

Jan 8, 2021
hedgedocllm-hedgedoc-eafc98e425b7b1eb

Vigor3900 / Vigor2960 / Vigor300B Remote code injection/execution Vulnerability (CVE-2020-19664)

Jan 8, 2021
capnprotollm-capnproto-855cbb9caf3beaf0

Vigor3900 / Vigor2960 / Vigor300B Remote code injection/execution Vulnerability (CVE-2020-19664)

Jan 8, 2021
ciscollm-cisco-6cdb9e41a8d45bc2

Vigor3900 / Vigor2960 / Vigor300B Remote code injection/execution Vulnerability (CVE-2020-19664)

Jan 8, 2021

References

github.com / minghangshen/bug_poc
ExploitThird Party Advisory
nosec.org / home/detail/4631.html
ExploitThird Party Advisory
draytek.com / about/security-advisory/vigor3900-/-vigor2960-/-vigor300b-remote-code-injection/execution-vulnerability-%28cve-2020-19664%29