How severe is CVE-2021-26624?

CVE-2021-26624 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-26624 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (81st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-26624?

CVE-2021-26624 affects Escanav Escan Anti-virus. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-26624?

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-2021-26624 published?

CVE-2021-26624 was published on 2022-04-01 and last updated on 2026-06-17.

CVE-2021-26624

CVE-2021-26624 is a high-severity vulnerability in Escanav Escan Anti-virus with a CVSS 3.x base score of 7.8. 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-20.

Key facts

Severity: High (CVSS 3.x base score 7.8)
CVSS v2: 10.0
EPSS exploit prediction: 2% (81st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Escanav Escan Anti-virus
Published: 2022-04-01
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2021-26624?: 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.
How severe is CVE-2021-26624?: CVE-2021-26624 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-26624 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (81st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-26624?: CVE-2021-26624 affects Escanav Escan Anti-virus. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-26624?: 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-2021-26624 published?: CVE-2021-26624 was published on 2022-04-01 and last updated on 2026-06-17.

References

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

Affected products (1)

cpe:2.3:a:escanav:escan_anti-virus:*:*:*:*:*:linux:*:*

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