CVE-2021-25833

CriticalCVSS 9.8/10Last modified Jun 17, 2026

Description

A file extension handling issue was found in [server] module of ONLYOFFICE DocumentServer v4.2.0.71-v5.6.0.21. The file extension is controlled by an attacker through the request data and leads to arbitrary file overwriting. Using this vulnerability, a remote attacker can obtain remote code execution on DocumentServer.

Metrics

CVSS 3.1 9.8/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-22

Affected software

No affected versions have been published.

Timeline

Published: Mar 1, 2021
Last modified: Jun 17, 2026
NVD status: Modified

Related CVEs from 2021

CVE-2021-258347.5Cosmos Network Ethermint <= v0.4.0 is affected by a transaction replay vulnerability in the EVM module. If the victim sends a very large non CVE-2021-258357.5Cosmos Network Ethermint <= v0.4.0 is affected by a cross-chain transaction replay vulnerability in the EVM module. Since ethermint uses the CVE-2021-258367.5Cosmos Network Ethermint <= v0.4.0 is affected by cache lifecycle inconsistency in the EVM module. The bytecode set in a FAILED transaction CVE-2021-258377.5Cosmos Network Ethermint <= v0.4.0 is affected by cache lifecycle inconsistency in the EVM module. Due to the inconsistency between the Stor CVE-2021-258386.1The Import function in MintHCM RELEASE 3.0.8 allows an attacker to execute a cross-site scripting (XSS) payload in file-upload.CVE-2021-258399.8A weak password requirement vulnerability exists in the Create New User function of MintHCM RELEASE 3.0.8, which could lead an attacker to e CVE-2021-258457.5Improper validation of the ChassisID TLV in userdisk/vport_lldpd in Moxa Camera VPort 06EC-2V Series, version 1.1, allows attackers to cause CVE-2021-258467.5Improper validation of the ChassisID TLV in userdisk/vport_lldpd in Moxa Camera VPort 06EC-2V Series, version 1.1, allows attackers to cause CVE-2021-258479.1Improper validation of the length field of LLDP-MED TLV in userdisk/vport_lldpd in Moxa Camera VPort 06EC-2V Series, version 1.1, allows inf CVE-2021-258489.1Improper validation of the length field of LLDP-MED TLV in userdisk/vport_lldpd in Moxa Camera VPort 06EC-2V Series, version 1.1, allows inf CVE-2021-258497.5An integer underflow was discovered in userdisk/vport_lldpd in Moxa Camera VPort 06EC-2V Series, version 1.1, improper validation of the Por CVE-2021-258564.9An issue was discovered in pcmt superMicro-CMS version 3.11, allows attackers to delete files via crafted image file in images.php.