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CVE-2020-8493

25
FAUCET Score

CVE-2020-8493 describes a stored Cross-Site Scripting (XSS) vulnerability in Kronos Web Time and Attendance (webTA) versions 3.8.x and later 3.x before 4.0. An authenticated administrator can inject malicious scripts into the Login Message, Banner Message, or Password Instructions fields via the com.threeis.webta.H261configMenu servlet. This vulnerability has a CVSS score of 4.8 (Medium), indicating a low-complexity attack requiring high privileges and user interaction, potentially leading to limited impact on confidentiality and integrity. While there is no evidence of active exploitation or Metasploit/Nuclei modules, an ExploitDB entry exists for "Authenticated Remote Privilege Escalation," and there is minimal community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
>= 3.8, < 4.0CPE matchmatch criteria
cpe:2.3:a:kronos:web_time_and_attendance:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

6.9MEDIUM

CVSS:3.0/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:H/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
1.7
Impact Score
4.7
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.49%
Probability of exploitation in next 30 days
EPSS Percentile
71.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
ExploitDB: EDB-48001 · Feb 5, 2020
This CVE's current EPSS score of 0.0149 is in the 96th percentile among its peer group of 4,937 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

packetstormsecurity.com / files/156215/Kronos-WebTA-4.0-Privilege-Escalation-Cross-Site-Scripting.html
ExploitThird Party Advisory
kronos.com / products/kronos-webta
ProductVendor Advisory
nolanbkennedy.com / post/stored-xss-in-kronos-web-time-and-attendance-webta
ExploitThird Party Advisory