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CVE-2020-29557

89
FAUCET Score

CVE-2020-29557 is a critical buffer overflow vulnerability in the web interface of D-Link DIR-825 R1 devices, specifically versions through 3.0.1 before November 20, 2020. This flaw allows unauthenticated attackers to achieve remote code execution (RCE) with a CVSS score of 9.8. The vulnerability is actively exploited in the wild, as indicated by its presence in the KEV catalog, and has garnered significant community discussion, despite a lack of public exploit code on platforms like Metasploit or ExploitDB. Media coverage also highlights its exploitation and potential impact on millions of routers.

Impacted Technologies

VendorProductVersion(s)CPE
<= 3.0.1CPE matchmatch criteria
cpe:2.3:o:dlink:dir-825_r1_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
54.32%
Probability of exploitation in next 30 days
EPSS Percentile
98.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
Added to KEV · Nov 3, 2021
This CVE's current EPSS score of 0.5432 is in the 97th 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

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

cisa.gov / known-exploited-vulnerabilities-catalog
US Government Resource
shaqed.github.io / dlink
Broken LinkExploitThird Party Advisory
dlink.ru / ru/download2/5/19/2354/441
Product