CVE-2021-42115

Name: CVE-2021-42115
Creator: NVD / NIST
Published: 2021-11-30T12:15:07.647+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.1/10EPSS 1.24%

Last modified Jun 17, 2026

CVE-2021-42115 is a critical-severity vulnerability rated 9.1/10 on the CVSS scale. Missing HTTPOnly flag in Web Applications operating on Business-DNA Solutions GmbH’s TopEase® Platform Version <= 7.1.27 allows an unauthenticated remote attacker to escalate privileges from unauthenticated to authenticated user via stealing and injecting the session- independent and static cookie UID.. EPSS estimates a 1.24% chance of exploitation in the next 30 days.

Description

Missing HTTPOnly flag in Web Applications operating on Business-DNA Solutions GmbH’s TopEase® Platform Version <= 7.1.27 allows an unauthenticated remote attacker to escalate privileges from unauthenticated to authenticated user via stealing and injecting the session- independent and static cookie UID.

Metrics

CVSS 3.1

9.1/10

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

EPSS Probability

1.24%

65.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Businessdnasolutions	Topease	<= 7.1.27

References

https://confluence.topease.ch/confluence/display/DOC/Release+NotesRelease Notes, Vendor Advisory
https://confluence.topease.ch/confluence/display/DOC/Release+NotesRelease Notes, Vendor Advisory

Timeline

Published: Nov 30, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-42115?

How severe is CVE-2021-42115?

CVE-2021-42115 has a CVSS score of 9.1/10 (CRITICAL severity). The EPSS model estimates a 1.24% probability of exploitation in the next 30 days.

How do I fix CVE-2021-42115?

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-2021-42115?

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

Scan your code now

Source: NVD / NIST