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CVE-2021-44466

24
FAUCET Score

CVE-2021-44466 is a local privilege escalation vulnerability affecting Bitmask Riseup VPN 0.21.6 on Windows. It arises from improper access controls during installation when a non-default directory is used, allowing low-privileged users to replace the VPN executable with a malicious one. This flaw carries a CVSS score of 7.3 (High), indicating that a local, low-privileged attacker can achieve high impact on confidentiality, integrity, and availability with user interaction. Currently, there is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
0.21.6CPE matchmatch criteria
cpe:2.3:a:leap:bitmask_riseup_vpn:0.21.6:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.3HIGH

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.3
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.40%
Probability of exploitation in next 30 days
EPSS Percentile
32.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0040 is in the 65th percentile among its peer group of 759 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 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 0.2 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (3)

giteavendor investigatingvia llm_extracted
meterspherevendor investigatingvia llm_extracted
qnapvendor investigatingvia llm_extracted

Vendor Advisories (3)

giteallm-gitea-b3fe3bf4c3067a15HIGH

Bitmask Riseup Local Privilege Escalation

Dec 30, 2021
qnapllm-qnap-2d301534fae6c57bHIGH

Bitmask Riseup Local Privilege Escalation

Dec 30, 2021
meterspherellm-metersphere-e00e0684660658e9HIGH

Bitmask Riseup Local Privilege Escalation

Dec 30, 2021

References

tenable.com / security/research/tra-2021-58
PatchThird Party Advisory