Improper Authorization in OX Documents

Published: 2021-07-22
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE ID CVE-2021-28095
Exploitation vector Network
Public exploit N/A
Vulnerable software
OX Documents
Client/Desktop applications / Other client software


Security Advisory

This security advisory describes one medium risk vulnerability.

1) Improper Authorization

Risk: Medium

CVSSv3.1: 5.2 [CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:L/A:N/E:U/RL:O/RC:C] [PCI]

CVE-ID: CVE-2021-28095

CWE-ID: CWE-285 - Improper Authorization

Exploit availability: No


The vulnerability allows a remote attacker to bypass authorization checks.

The vulnerability exists due to documents are cached for faster processing when requesting the same resource again. A remote authenticated attacker can swap document content by hash key colissions.


Install updates from vendor's website.

Vulnerable software versions

OX Documents: before 7.10.3-rev10, 7.10.4-rev8, 7.10.5-rev5

CPE External links

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.