CVE-2021-23892
CVE-2021-23892 is a high-severity vulnerability in Mcafee Endpoint Security For Linux Threat Prevention with a CVSS 3.x base score of 8.2. 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-367.
Key facts
- Severity: High (CVSS 3.x base score 8.2)
- CVSS v2: 6.9
- EPSS exploit prediction: 0% (10th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-367
- Affected product: Mcafee Endpoint Security For Linux Threat Prevention
- Published:
- Last modified:
Description
By exploiting a time of check to time of use (TOCTOU) race condition during the Endpoint Security for Linux Threat Prevention and Firewall (ENSL TP/FW) installation process, a local user can perform a privilege escalation attack to obtain administrator privileges for the purpose of executing arbitrary code through insecure use of predictable temporary file locations.
Frequently asked questions
- What is CVE-2021-23892?
- By exploiting a time of check to time of use (TOCTOU) race condition during the Endpoint Security for Linux Threat Prevention and Firewall (ENSL TP/FW) installation process, a local user can perform a privilege escalation attack to obtain administrator privileges for the purpose of executing arbitrary code through insecure use of predictable temporary file locations.
- How severe is CVE-2021-23892?
- CVE-2021-23892 has a CVSS 3.x base score of 8.2, 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-2021-23892 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (10th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2021-23892?
- CVE-2021-23892 affects Mcafee Endpoint Security For Linux Threat Prevention. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2021-23892?
- 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-2021-23892 published?
- CVE-2021-23892 was published on 2021-05-12 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:o:mcafee:endpoint_security_for_linux_threat_prevention:*:*:*:*:*:linux:*:*
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