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CVE-2021-20111

20
FAUCET Score

CVE-2021-20111 describes a stored cross-site scripting (XSS) vulnerability in TCExam versions up to and including 14.8.1. An authenticated attacker can upload a malicious JavaScript payload via tce_filemanager.php by naming a file starting with a period, causing it to be rendered as text/html. This medium-severity vulnerability (CVSS 5.4) requires user interaction and low privileges, potentially leading to limited impact on confidentiality and integrity. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 14.8.1CPE matchmatch criteria
cpe:2.3:a:tecnick:tcexam:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.4MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.3
Impact Score
2.7
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.61%
Probability of exploitation in next 30 days
EPSS Percentile
45.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0061 is in the 75th percentile among its peer group of 15,239 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

Vendor Patches (5)

asteriskvendor investigatingvia llm_extracted
ciscovendor investigatingvia llm_extracted
miniovendor investigatingvia llm_extracted
opensshvendor investigatingvia llm_extracted
railsvendor investigatingvia llm_extracted

Vendor Advisories (5)

opensshllm-openssh-e1ff6a888e2efaecCRITICAL

Multiple Vulnerabilities in TCExam

Jul 21, 2021
railsllm-rails-6ddf7856cbb4925aCRITICAL

Multiple Vulnerabilities in TCExam

Jul 21, 2021
miniollm-minio-2a3ef13417078881CRITICAL

Multiple Vulnerabilities in TCExam

Jul 21, 2021
ciscollm-cisco-ca340eb3c89140f8CRITICAL

Multiple Vulnerabilities in TCExam

Jul 21, 2021
asteriskllm-asterisk-5e277179dd49094aCRITICAL

Multiple Vulnerabilities in TCExam

Jul 21, 2021

References

tenable.com / security/research/tra-2021-32
ExploitThird Party Advisory