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CVE-2021-43573

30
FAUCET Score

CVE-2021-43573 is a critical buffer overflow vulnerability affecting Realtek RTL8195AM devices prior to version 2.0.10. This flaw occurs when the client processes malformed HT capability information within Beacon and Association response frames. With a CVSS score of 9.8, it presents a severe risk, allowing unauthenticated attackers to achieve complete compromise (confidentiality, integrity, and availability) over the network with low attack complexity. Despite its critical severity, there is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2.0.10CPE matchmatch criteria
cpe:2.3:o:realtek:rtl8195am_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
1.07%
Probability of exploitation in next 30 days
EPSS Percentile
61.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0107 is in the 46th 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

No media coverage found for this CVE.

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

amebaiot.com / en/security_bulletin/cve-2021-43573
Third Party Advisory