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CVE-2020-28005

21
FAUCET Score

CVE-2020-28005 describes a buffer overflow vulnerability in the httpd service of TP-Link TL-WPA4220 devices (hardware versions 2-4). An authenticated attacker can trigger a denial of service by sending a crafted POST request to the /admin/syslog endpoint. This vulnerability has a CVSS score of 6.5 (Medium), indicating it can be exploited remotely with low complexity by an authenticated user, leading to high availability impact. There is currently no public exploit code available, nor is there evidence of active exploitation or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
All Versions ImpactedCPE matchmatch criteria
cpe:2.3:o:tp-link:tl-wpa4220_firmware:*:*:*:*:*:*:*:*
< tl-wpa4220\(eu\)_v4_201023CPE matchmatch criteria
cpe:2.3:o:tp-link:tl-wpa4220_firmware:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.5MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.79%
Probability of exploitation in next 30 days
EPSS Percentile
76.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0179 is in the 89th percentile among its peer group of 21,977 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 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

the-hyperbolic.com / posts/vulnerabilities-in-tlwpa4220
ExploitThird Party Advisory
tp-link.com / us/security
Vendor Advisory