Medium severity · published Jul 30, 2021
CVE-2021-20112
A stored cross-site scripting vulnerability exists in TCExam <= 14.8.1
5.4
CVSS
0.6%
EPSS
No
On KEV
Description
A stored cross-site scripting vulnerability exists in TCExam <= 14.8.1. Valid files uploaded via tce_select_mediafile.php with a filename beggining with a period will be rendered as text/html. An attacker with access to tce_select_mediafile.php could upload a malicious javascript payload which would be triggered when another user views the file.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.6% · higher than 50% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
TC
Tcexam · Tecnick
through 14.8.1 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-20112
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-20112
Exploit
https://www.tenable.com/security/research/tra-2021-32
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