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CVE-2021-42255

24
FAUCET Score

CVE-2021-42255 is a high-severity vulnerability affecting AppGuard Enterprise versions prior to 6.7.100.1, where insecure permissions on a temporary file directory allow local users to escalate privileges to SYSTEM. The vulnerability has a CVSS score of 7.8, indicating a high impact on confidentiality, integrity, and availability, with low attack complexity and no user interaction required. Despite its 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
< 6.7.100.1CPE matchmatch criteria
cpe:2.3:a:blueplanet-works:appguard:*:*:*:*:enterprise:windows:*:*

CVSS Data

CVSS version used by this source: 3.1

7.8HIGH

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.29%
Probability of exploitation in next 30 days
EPSS Percentile
21.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0029 is in the 57th 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

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

github.com / mandiant/Vulnerability-Disclosures/blob/master/2022/MNDT-2022-0022/MNDT-2022-0022.md
Third Party Advisory
beyondtrust.com / blog
Not Applicable