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CVE-2021-27203

18
FAUCET Score

CVE-2021-27203 describes an arbitrary memory dereferencing vulnerability in Dekart Private Disk 2.15, stemming from an invalid use of the Type3 user buffer for IOCTL codes. This medium-severity vulnerability (CVSS 5.5) has a local attack vector, low attack complexity, and can lead to high availability impact, though it does not affect confidentiality or integrity. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion, indicating a low current threat level.

Impacted Technologies

VendorProductVersion(s)CPE
2.15CPE matchmatch criteria
cpe:2.3:a:dekart:private_disk:2.15:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.5MEDIUM

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.38%
Probability of exploitation in next 30 days
EPSS Percentile
30.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0037 is in the 86th percentile among its peer group of 15,940 CVEs.

Social Chatter

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

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

dekart.com / products/encryption/private_disk
ProductVendor Advisory
rootshellsecurity.net / rootshell-discover-denial-of-service-flaw-dekart-private-disk-encryption-software
ExploitThird Party Advisory