CVE-2021-44466
CVE-2021-44466 is a high-severity vulnerability in Leap Bitmask Riseup Vpn with a CVSS 3.x base score of 7.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-732.
Key facts
- Severity: High (CVSS 3.x base score 7.3)
- CVSS v2: 4.6
- EPSS exploit prediction: 0% (32nd percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-732
- Affected product: Leap Bitmask Riseup Vpn
- Published:
- Last modified:
Description
Bitmask Riseup VPN 0.21.6 contains a local privilege escalation flaw due to improper access controls. When the software is installed with a non-default installation directory off of the system root, the installer fails to properly set ACLs. This allows lower privileged users to replace the VPN executable with a malicious one. When a higher privileged user such as an Administrator launches that executable, it is possible for the lower privileged user to escalate to Administrator privileges.
Frequently asked questions
- What is CVE-2021-44466?
- Bitmask Riseup VPN 0.21.6 contains a local privilege escalation flaw due to improper access controls. When the software is installed with a non-default installation directory off of the system root, the installer fails to properly set ACLs. This allows lower privileged users to replace the VPN executable with a malicious one. When a higher privileged user such as an Administrator launches that executable, it is possible for the lower privileged user to escalate to Administrator privileges.
- How severe is CVE-2021-44466?
- CVE-2021-44466 has a CVSS 3.x base score of 7.3, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2021-44466 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (32nd percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2021-44466?
- CVE-2021-44466 affects Leap Bitmask Riseup Vpn. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2021-44466?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- When was CVE-2021-44466 published?
- CVE-2021-44466 was published on 2021-12-30 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:leap:bitmask_riseup_vpn:0.21.6:*:*:*:*:*:*:*
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