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CVE-2021-43637

26
FAUCET Score

CVE-2021-43637 is a buffer overflow vulnerability in the Amazon WorkSpaces agent, affecting versions below 1.0.1.1537. This flaw allows a local attacker to execute arbitrary code in kernel mode or cause a denial of service through specially crafted I/O Request Packets. With a CVSS score of 8.8 (HIGH), it presents a significant risk due to its potential for complete compromise of confidentiality, integrity, and availability. There is no evidence of active exploitation, nor are public exploit codes like Metasploit or ExploitDB modules available. Community discussion and media coverage for this CVE are minimal.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.0.1.1537CPE matchmatch criteria
cpe:2.3:a:amazon:workspaces:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.8HIGH

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.0
Impact Score
6.0
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.46%
Probability of exploitation in next 30 days
EPSS Percentile
37.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0046 is in the 78th percentile among its peer group of 17,061 CVEs.

Social Chatter

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

sentinelone.com / labs/usb-over-ethernet-multiple-privilege-escalation-vulnerabilities-in-aws-and-other-major-cloud-services
ExploitTechnical DescriptionThird Party Advisory