How severe is CVE-2021-20112?

CVE-2021-20112 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2021-20112 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (46th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-20112?

CVE-2021-20112 affects Tecnick Tcexam. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-20112?

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

When was CVE-2021-20112 published?

CVE-2021-20112 was published on 2021-07-30 and last updated on 2026-06-17.

CVE-2021-20112

CVE-2021-20112 is a medium-severity vulnerability in Tecnick Tcexam with a CVSS 3.x base score of 5.4. 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 5.4)
CVSS v2: 3.5
EPSS exploit prediction: 1% (46th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Tecnick Tcexam
Published: 2021-07-30
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2021-20112?: 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.
How severe is CVE-2021-20112?: CVE-2021-20112 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2021-20112 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (46th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-20112?: CVE-2021-20112 affects Tecnick Tcexam. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-20112?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-20112 published?: CVE-2021-20112 was published on 2021-07-30 and last updated on 2026-06-17.

References

https://www.tenable.com/security/research/tra-2021-32

Affected products (1)

cpe:2.3:a:tecnick:tcexam:*:*:*:*:*:*:*:*

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