How severe is CVE-2020-8494?

CVE-2020-8494 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2020-8494 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (62nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-8494?

CVE-2020-8494 affects Kronos Web Time And Attendance. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-8494?

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-2020-8494 published?

CVE-2020-8494 was published on 2020-01-30 and last updated on 2026-06-17.

CVE-2020-8494

CVE-2020-8494 is a high-severity vulnerability in Kronos Web Time And Attendance with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 6.5
EPSS exploit prediction: 1% (62nd percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Kronos Web Time And Attendance
Published: 2020-01-30
Last modified: 2026-06-17

Description

In Kronos Web Time and Attendance (webTA) 3.8.x and later 3.x versions before 4.0, the com.threeis.webta.H402editUser servlet allows an attacker with Timekeeper, Master Timekeeper, or HR Admin privileges to gain unauthorized administrative privileges within the application via the emp_id, userid, pw1, pw2, supervisor, and timekeeper parameters.

Frequently asked questions

What is CVE-2020-8494?: In Kronos Web Time and Attendance (webTA) 3.8.x and later 3.x versions before 4.0, the com.threeis.webta.H402editUser servlet allows an attacker with Timekeeper, Master Timekeeper, or HR Admin privileges to gain unauthorized administrative privileges within the application via the emp_id, userid, pw1, pw2, supervisor, and timekeeper parameters.
How severe is CVE-2020-8494?: CVE-2020-8494 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2020-8494 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (62nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-8494?: CVE-2020-8494 affects Kronos Web Time And Attendance. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-8494?: 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-2020-8494 published?: CVE-2020-8494 was published on 2020-01-30 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:kronos:web_time_and_attendance:*:*:*:*:*:*:*:*

More vulnerabilities in Kronos Web Time And Attendance

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CVE-2020-8495 — High (CVSS 7.5): In Kronos Web Time and Attendance (webTA) 3.8.x and later 3.x versions before 4.0, the com.threeis.webta.H491delegate…
CVE-2020-14982 — Medium (CVSS 6.5): A Blind SQL Injection vulnerability in Kronos WebTA 3.8.x and later before 4.0 (affecting the…
CVE-2020-8496 — Medium (CVSS 4.8): In Kronos Web Time and Attendance (webTA) 4.1.x and later 4.x versions before 5.0, there is a Stored XSS vulnerability…
CVE-2020-8493 — Medium (CVSS 4.8): A stored XSS vulnerability in Kronos Web Time and Attendance (webTA) affects 3.8.x and later 3.x versions before 4.0…

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