CVE-2021-43638 json
Amazon Amazon WorkSpaces agent is affected by Integer Overflow.
published 2021-12-07 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-30550
- cvss
- 8.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.5%
- EPSS 0.5% chance of exploitation in 30 days, percentile 45%
- public exploits
- 0
- none known
Summary
Amazon Amazon WorkSpaces agent is affected by Integer Overflow. IOCTL Handler 0x22001B in the Amazon WorkSpaces agent below v1.0.1.1537 allow local attackers to execute arbitrary code in kernel mode or cause a denial of service (memory corruption and OS crash) via specially crafted I/O Request Packet.
Patch / fix
- amazon workspaces 1.0.1.1537
Exploit prediction
0.55% chance of exploitation in the next 30 days, higher than 45% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- sentinelone.com https://www.sentinelone.com/labs/usb-over-ethernet-multiple-privilege-escalation-vulnerabilities-in-aws-and-other-major-cloud-services/ referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 8.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H |
| NVD | 2.0 | 7.2 | AV:L/AC:L/Au:N/C:C/I:C/A:C |
Classification
- Weakness
-
- CWE-190 Integer Overflow or Wraparound
References
-
sentinelone.com
/labs/usb-over-ethernet-multiple-privilege-escalation-vulnerabilities-in-aws-and-other-major-cloud-services/
exploit, technical-description, third-party-advisory
Sources
- CVE List CVE-2021-43638
- NVD CVE-2021-43638
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