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CVE-2021-44029

31
FAUCET Score

CVE-2021-44029 is a critical remote code execution vulnerability affecting Quest KACE Desktop Authority before version 11.2. It stems from a deserialization flaw in the RadAsyncUpload function of ASP.NET AJAX, allowing unauthenticated attackers to execute arbitrary code. Exploitation requires knowledge of encryption keys, which could be obtained through other vulnerabilities like CVE-2017-11317 or CVE-2017-11357. While there is no known active exploitation or public exploit code, the vulnerability has a CVSS score of 9.8 (CRITICAL) and has garnered significant community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
>= 10.0, < 11.2CPE matchmatch criteria
cpe:2.3:a:quest:kace_desktop_authority:*:*:*:*:*:*:*:*

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
0.87%
Probability of exploitation in next 30 days
EPSS Percentile
55.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0087 is in the 39th percentile among its peer group of 36,897 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

support.quest.com / kace-desktop-authority/kb/336098/quest-response-to-desktop-authority-vulnerabilities-prior-to-11-2
Vendor Advisory