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Vulnerability record · CVE-2021-27556 · published 31 August 2021

CVE-2021-27556: Easycorp zentao os command injection vulnerability

Easycorp · Zentao

The Cron job tab in EasyCorp ZenTao 12.5.3 allows remote attackers (who have admin access) to execute arbitrary code by setting the type parameter to System.

7.2 CVSS 3.1 High EPSS 4.0% · top 9.8% CWE-78 · OS command injection
7.2CVSS 3.1 base score, v2 9.0
4.0%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

The Cron job tab in EasyCorp ZenTao 12.5.3 allows remote attackers (who have admin access) to execute arbitrary code by setting the type parameter to System.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://privasec.com/blog/zentao-cms-a-monkeys-journey-to-priv-esc-remote-code-execution/ ExploitThird Party Advisory
https://privasec.com/blog/zentao-cms-a-monkeys-journey-to-priv-esc-remote-code-execution/ ExploitThird Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2021-27556), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.