CVE-2021-21434

Name: CVE-2021-21434
Creator: NVD / NIST
Published: 2021-02-08T11:15:14.08+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 4.8/10EPSS 0.66%

Last modified Jun 17, 2026

CVE-2021-21434 is a medium-severity vulnerability rated 4.8/10 on the CVSS scale. Survey administrator can craft a survey in such way that malicious code can be executed in the agent interface (i.e. another agent who wants to make changes in the survey). EPSS estimates a 0.66% chance of exploitation in the next 30 days.

Description

Survey administrator can craft a survey in such way that malicious code can be executed in the agent interface (i.e. another agent who wants to make changes in the survey). This issue affects: OTRS AG Survey 6.0.x version 6.0.20 and prior versions; 7.0.x version 7.0.19 and prior versions.

Metrics

CVSS 3.1

4.8/10

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

EPSS Probability

0.66%

46.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Otrs	Survey	>= 6.0.0, <= 6.0.20
Otrs	Survey	>= 7.0.0, <= 7.0.19

References

https://otrs.com/release-notes/otrs-security-advisory-2021-01/Vendor Advisory
https://otrs.com/release-notes/otrs-security-advisory-2021-01/Vendor Advisory

Timeline

Published: Feb 8, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-21434?

How severe is CVE-2021-21434?

CVE-2021-21434 has a CVSS score of 4.8/10 (MEDIUM severity). The EPSS model estimates a 0.66% probability of exploitation in the next 30 days.

How do I fix CVE-2021-21434?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-21434?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST