CVE-2021-27556
CVE-2021-27556 is a high-severity vulnerability in Easycorp Zentao with a CVSS 3.x base score of 7.2. 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-78.
Key facts
- Severity: High (CVSS 3.x base score 7.2)
- CVSS v2: 9.0
- EPSS exploit prediction: 4% (89th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-78
- Affected product: Easycorp Zentao
- Published:
- Last modified:
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.
Frequently asked questions
- What is CVE-2021-27556?
- 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.
- How severe is CVE-2021-27556?
- CVE-2021-27556 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2021-27556 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (89th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2021-27556?
- CVE-2021-27556 affects Easycorp Zentao. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2021-27556?
- 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-2021-27556 published?
- CVE-2021-27556 was published on 2021-08-31 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:easycorp:zentao:12.5.3:*:*:*:*:*:*:*
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