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CVE-2020-10827

35
FAUCET Score

CVE-2020-10827 describes a critical stack-based buffer overflow vulnerability in the apmd service of Draytek Vigor3900, Vigor2960, and Vigor300B devices running firmware versions prior to 1.5.1. This flaw allows unauthenticated remote attackers to achieve arbitrary code execution by sending a specially crafted HTTP request. With a CVSS score of 9.8, this vulnerability is easily exploitable over the network with no user interaction, leading to complete compromise of confidentiality, integrity, and availability. While there are no known public exploits or active exploitation in the wild, the vulnerability has garnered significant community discussion and media coverage, indicating a high level of awareness.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.5.1CPE matchmatch criteria
cpe:2.3:o:draytek:vigor300b_firmware:*:*:*:*:*:*:*:*
< 1.5.1CPE matchmatch criteria
cpe:2.3:o:draytek:vigor3900_firmware:*:*:*:*:*:*:*:*
< 1.5.1CPE matchmatch criteria
cpe:2.3:o:draytek:vigor2960_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
20.88%
Probability of exploitation in next 30 days
EPSS Percentile
97.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.2088 is in the 94th percentile among its peer group of 36,862 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

slashd.ga / 2020/03/draytek-vulnerabilities
ExploitThird Party Advisory
draytek.com / about/security-advisory/vigor3900-/-vigor2960-/-vigor300b-stack-based-buffer-overflow-vulnerability