How severe is CVE-2020-8493?

CVE-2020-8493 has a CVSS 3.x base score of 4.8, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2020-8493 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (71st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-8493?

CVE-2020-8493 affects Kronos Web Time And Attendance. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-8493?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2020-8493 published?

CVE-2020-8493 was published on 2020-01-30 and last updated on 2026-06-17.

CVE-2020-8493

CVE-2020-8493 is a medium-severity vulnerability in Kronos Web Time And Attendance with a CVSS 3.x base score of 4.8. 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-79.

Key facts

Severity: Medium (CVSS 3.x base score 4.8)
CVSS v2: 3.5
EPSS exploit prediction: 1% (71st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Kronos Web Time And Attendance
Published: 2020-01-30
Last modified: 2026-06-17

Description

A stored XSS vulnerability in Kronos Web Time and Attendance (webTA) affects 3.8.x and later 3.x versions before 4.0 via multiple input fields (Login Message, Banner Message, and Password Instructions) of the com.threeis.webta.H261configMenu servlet via an authenticated administrator.

Frequently asked questions

What is CVE-2020-8493?: A stored XSS vulnerability in Kronos Web Time and Attendance (webTA) affects 3.8.x and later 3.x versions before 4.0 via multiple input fields (Login Message, Banner Message, and Password Instructions) of the com.threeis.webta.H261configMenu servlet via an authenticated administrator.
How severe is CVE-2020-8493?: CVE-2020-8493 has a CVSS 3.x base score of 4.8, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2020-8493 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (71st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-8493?: CVE-2020-8493 affects Kronos Web Time And Attendance. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-8493?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-8493 published?: CVE-2020-8493 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

CVE-2020-35604 — Critical (CVSS 9.8): An XXE attack can occur in Kronos WebTA 5.0.4 when SAML is used.
CVE-2020-8494 — High (CVSS 8.8): In Kronos Web Time and Attendance (webTA) 3.8.x and later 3.x versions before 4.0, the com.threeis.webta.H402editUser…
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…

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