CVE-2021-33491

Name: CVE-2021-33491
Creator: NVD / NIST
Published: 2021-11-22T09:15:07.103+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.5/10EPSS 2.44%

Last modified Jun 17, 2026

CVE-2021-33491 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. OX App Suite through 7.10.5 allows Directory Traversal via ../ in an OOXML or ODF ZIP archive, because of the mishandling of relative paths in mail addresses in conjunction with auto-configuration DNS records.. EPSS estimates a 2.44% chance of exploitation in the next 30 days.

Description

OX App Suite through 7.10.5 allows Directory Traversal via ../ in an OOXML or ODF ZIP archive, because of the mishandling of relative paths in mail addresses in conjunction with auto-configuration DNS records.

Metrics

CVSS 3.1

6.5/10

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

EPSS Probability

2.44%

82.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-22

Affected Software

Vendor	Product	Versions
Open-Xchange	Ox App Suite	<= 7.10.5

References

http://packetstormsecurity.com/files/165028/OX-App-Suite-Ox-Documents-7.10.x-XSS-Code-Injection-Traversal.htmlExploit, Third Party Advisory, VDB Entry
https://open-xchange.comProduct, Vendor Advisory
https://seclists.org/fulldisclosure/2021/Nov/42Exploit, Mailing List, Third Party Advisory
http://packetstormsecurity.com/files/165028/OX-App-Suite-Ox-Documents-7.10.x-XSS-Code-Injection-Traversal.htmlExploit, Third Party Advisory, VDB Entry
https://open-xchange.comProduct, Vendor Advisory
https://seclists.org/fulldisclosure/2021/Nov/42Exploit, Mailing List, Third Party Advisory

Timeline

Published: Nov 22, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-33491?

How severe is CVE-2021-33491?

CVE-2021-33491 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 2.44% probability of exploitation in the next 30 days.

How do I fix CVE-2021-33491?

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-2021-33491?

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

Scan your code now

Source: NVD / NIST