CVE-2021-26624: eScan Anti-Virus Local privilege escalation Vulnerability

Severity: high (CVSS 8.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2022-04-01 · updated 2026-06-17
Weakness: CWE-20

Description

An local privilege escalation vulnerability due to a "runasroot" command in eScan Anti-Virus. This vulnerability is due to invalid arguments and insufficient execution conditions related to "runasroot" command. This vulnerability can induce remote attackers to exploit root privileges by manipulating parameter values.

Affected products

MicroWord eScan Antivirus: before 7.0.31 — fixed in 7.0.31

How to fix

Upgrade to a fixed version: MicroWord eScan Antivirus 7.0.31. Check the vendor advisory for mitigations.

References

https://www.krcert.or.kr/krcert/secNoticeView.do?bulletin_writing_sequence=66596
https://www.krcert.or.kr/krcert/secNoticeView.do?bulletin_writing_sequence=66596

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