CWE-20— Improper Input Validation
The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.— MITRE CWE catalog
14,116 active CVEs classified under this weakness category. Sourced from NVD, GHSA, and vendor advisories. Full definition on MITRE →
CVEs classified under CWE-20page 1 of 283
- CVE-2026-93952CRITICALCVSS 10.0EG 10.0⚠ KEV2026-09-22
VeloCloud Orchestrator (VCO) on-prem has a security issue where this issue may allow a remote attacker to access privileged internal functionality and impact the VCO host. Successful exploitation may compromise the confidentiality, integri…
- CVE-2026-34910CRITICALCVSS 10.0EG 10.0⚠ KEV2026-05-22
A malicious actor with access to the network could exploit an Improper Input Validation vulnerability found in UniFi OS devices to execute a Command Injection.
- CVE-2025-20393CRITICALCVSS 10.0EG 10.0⚠ KEV2025-12-17
A vulnerability in the Spam Quarantine feature of Cisco AsyncOS Software for Cisco Secure Email Gateway and Cisco Secure Email and Web Manager could allow an unauthenticated, remote attacker to execute arbitrary system commands on an affec…
- CVE-2024-3400CRITICALCVSS 10.0EG 10.0⚠ KEV2024-04-12
A command injection as a result of arbitrary file creation vulnerability in the GlobalProtect feature of Palo Alto Networks PAN-OS software for specific PAN-OS versions and distinct feature configurations may enable an unauthenticated atta…
- CVE-2021-44228CRITICALCVSS 10.0EG 10.0⚠ KEV2021-12-10
Apache Log4j2 2.0-beta9 through 2.15.0 (excluding security releases 2.12.2, 2.12.3, and 2.3.1) JNDI features used in configuration, log messages, and parameters do not protect against attacker controlled LDAP and other JNDI related endpoin…
- CVE-2021-22205CRITICALCVSS 10.0EG 10.0⚠ KEV2021-04-23
An issue has been discovered in GitLab CE/EE affecting all versions starting from 11.9. GitLab was not properly validating image files that were passed to a file parser which resulted in a remote command execution.
- CVE-2020-1350CRITICALCVSS 10.0EG 10.0⚠ KEV2020-07-14
A remote code execution vulnerability exists in Windows Domain Name System servers when they fail to properly handle requests, aka 'Windows DNS Server Remote Code Execution Vulnerability'.
- CVE-2020-0796CRITICALCVSS 10.0EG 10.0⚠ KEV2020-03-12
A remote code execution vulnerability exists in the way that the Microsoft Server Message Block 3.1.1 (SMBv3) protocol handles certain requests, aka 'Windows SMBv3 Client/Server Remote Code Execution Vulnerability'.
- CVE-2019-11708CRITICALCVSS 10.0EG 10.0⚠ KEV2019-07-23
Insufficient vetting of parameters passed with the Prompt:Open IPC message between child and parent processes can result in the non-sandboxed parent process opening web content chosen by a compromised child process. When combined with addi…
- CVE-2023-22515CRITICALCVSS 9.8EG 10.0⚠ KEV2023-10-04
Atlassian has been made aware of an issue reported by a handful of customers where external attackers may have exploited a previously unknown vulnerability in publicly accessible Confluence Data Center and Server instances to create unauth…
- CVE-2026-88771CRITICALCVSS 9.8EG 9.8⚠ KEV2026-09-27
Improper input validation vulnerability in Citrix NetScaler ADC and Citrix NetScaler Gateway. This issue affects ADC: before 14.1-73.37, before 13.1-64.23, before 14.1-73.37 FIPS, and before 13.1.37.279 FIPS and NDcPP; Gateway: before 14.…
- CVE-2026-12569CRITICALCVSS 9.8EG 9.8⚠ KEV2026-06-18
A critical remote code execution (RCE) vulnerability has been reported in PTC Windchill PDMlink and PTC FlexPLM. The vulnerability may be exploited through the deserialization of untrusted data. * This advisory also applies to all CPS …
- CVE-2024-4040CRITICALCVSS 9.8EG 9.8⚠ KEV2024-04-22
A server side template injection vulnerability in CrushFTP in all versions before 10.7.1 and 11.1.0 on all platforms allows unauthenticated remote attackers to read files from the filesystem outside of the VFS Sandbox, bypass authenticatio…
- CVE-2024-21413CRITICALCVSS 9.8EG 9.8⚠ KEV2024-02-13
Microsoft Outlook Remote Code Execution Vulnerability
- CVE-2023-23397CRITICALCVSS 9.8EG 9.8⚠ KEV2023-03-14
Microsoft Outlook Elevation of Privilege Vulnerability
- CVE-2022-47966CRITICALCVSS 9.8EG 9.8⚠ KEV2023-01-18
Multiple Zoho ManageEngine on-premise products, such as ServiceDesk Plus through 14003, allow remote code execution due to use of Apache Santuario xmlsec (aka XML Security for Java) 1.4.1, because the xmlsec XSLT features, by design in tha…
- CVE-2022-29499CRITICALCVSS 9.8EG 9.8⚠ KEV2022-04-26
The Service Appliance component in Mitel MiVoice Connect through 19.2 SP3 allows remote code execution because of incorrect data validation. The Service Appliances are SA 100, SA 400, and Virtual SA.
- CVE-2022-24086CRITICALCVSS 9.8EG 9.8⚠ KEV2022-02-16
Adobe Commerce versions 2.4.3-p1 (and earlier) and 2.3.7-p2 (and earlier) are affected by an improper input validation vulnerability during the checkout process. Exploitation of this issue does not require user interaction and could result…
- CVE-2021-36260CRITICALCVSS 9.8EG 9.8⚠ KEV2021-09-22
A command injection vulnerability in the web server of some Hikvision product. Due to the insufficient input validation, attacker can exploit the vulnerability to launch a command injection attack by sending some messages with malicious co…
- CVE-2021-21985CRITICALCVSS 9.8EG 9.8⚠ KEV2021-05-26
The vSphere Client (HTML5) contains a remote code execution vulnerability due to lack of input validation in the Virtual SAN Health Check plug-in which is enabled by default in vCenter Server. A malicious actor with network access to port …
- CVE-2021-22991CRITICALCVSS 9.8EG 9.8⚠ KEV2021-03-31
On BIG-IP versions 16.0.x before 16.0.1.1, 15.1.x before 15.1.2.1, 14.1.x before 14.1.4, 13.1.x before 13.1.3.6, and 12.1.x before 12.1.5.3, undisclosed requests to a virtual server may be incorrectly handled by the Traffic Management Micr…
- CVE-2018-19949CRITICALCVSS 9.8EG 9.8⚠ KEV2020-10-28
If exploited, this command injection vulnerability could allow remote attackers to run arbitrary commands. QNAP has already fixed the issue in the following QTS versions. QTS 4.4.2.1231 on build 20200302; QTS 4.4.1.1201 on build 20200130; …
- CVE-2020-3161CRITICALCVSS 9.8EG 9.8⚠ KEV2020-04-15
A vulnerability in the web server for Cisco IP Phones could allow an unauthenticated, remote attacker to execute code with root privileges or cause a reload of an affected IP phone, resulting in a denial of service (DoS) condition. The vul…
- CVE-2020-8644CRITICALCVSS 9.8EG 9.8⚠ KEV2020-02-05
PlaySMS before 1.4.3 does not sanitize inputs from a malicious string.
- CVE-2020-0646CRITICALCVSS 9.8EG 9.8⚠ KEV2020-01-14
A remote code execution vulnerability exists when the Microsoft .NET Framework fails to validate input properly, aka '.NET Framework Remote Code Execution Injection Vulnerability'.
- CVE-2019-7193CRITICALCVSS 9.8EG 9.8⚠ KEV2019-12-05
This improper input validation vulnerability allows remote attackers to inject arbitrary code to the system. To fix the vulnerability, QNAP recommend updating QTS to their latest versions.
- CVE-2019-16759CRITICALCVSS 9.8EG 9.8⚠ KEV2019-09-24
vBulletin 5.x through 5.5.4 allows remote command execution via the widgetConfig[code] parameter in an ajax/render/widget_php routestring request.
- CVE-2019-10149CRITICALCVSS 9.8EG 9.8⚠ KEV2019-06-05
A flaw was found in Exim versions 4.87 to 4.91 (inclusive). Improper validation of recipient address in deliver_message() function in /src/deliver.c may lead to remote command execution.
- CVE-2019-0604CRITICALCVSS 9.8EG 9.8⚠ KEV2019-03-05
A remote code execution vulnerability exists in Microsoft SharePoint when the software fails to check the source markup of an application package, aka 'Microsoft SharePoint Remote Code Execution Vulnerability'. This CVE ID is unique from C…
- CVE-2018-20062CRITICALCVSS 9.8EG 9.8⚠ KEV2018-12-11
An issue was discovered in NoneCms V1.3. thinkphp/library/think/App.php allows remote attackers to execute arbitrary PHP code via crafted use of the filter parameter, as demonstrated by the s=index/\think\Request/input&filter=phpinfo&data=…
- CVE-2018-7600CRITICALCVSS 9.8EG 9.8⚠ KEV2018-03-29
Drupal before 7.58, 8.x before 8.3.9, 8.4.x before 8.4.6, and 8.5.x before 8.5.1 allows remote attackers to execute arbitrary code because of an issue affecting multiple subsystems with default or common module configurations.
- CVE-2018-0171CRITICALCVSS 9.8EG 9.8⚠ KEV2018-03-28
A vulnerability in the Smart Install feature of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to trigger a reload of an affected device, resulting in a denial of service (DoS) condition, or to…
- CVE-2018-0147CRITICALCVSS 9.8EG 9.8⚠ KEV2018-03-08
A vulnerability in Java deserialization used by Cisco Secure Access Control System (ACS) prior to release 5.8 patch 9 could allow an unauthenticated, remote attacker to execute arbitrary commands on an affected device. The vulnerability is…
- CVE-2018-0125CRITICALCVSS 9.8EG 9.8⚠ KEV2018-02-08
A vulnerability in the web interface of the Cisco RV132W ADSL2+ Wireless-N VPN and RV134W VDSL2 Wireless-AC VPN Routers could allow an unauthenticated, remote attacker to execute arbitrary code and gain full control of an affected system, …
- CVE-2017-15944CRITICALCVSS 9.8EG 9.8⚠ KEV2017-12-11
Palo Alto Networks PAN-OS before 6.1.19, 7.0.x before 7.0.19, 7.1.x before 7.1.14, and 8.0.x before 8.0.6 allows remote attackers to execute arbitrary code via vectors involving the management interface.
- CVE-2017-12240CRITICALCVSS 9.8EG 9.8⚠ KEV2017-09-29
The DHCP relay subsystem of Cisco IOS 12.2 through 15.6 and Cisco IOS XE Software contains a vulnerability that could allow an unauthenticated, remote attacker to execute arbitrary code and gain full control of an affected system. The atta…
- CVE-2017-11357CRITICALCVSS 9.8EG 9.8⚠ KEV2017-08-23
Progress Telerik UI for ASP.NET AJAX before R2 2017 SP2 does not properly restrict user input to RadAsyncUpload, which allows remote attackers to perform arbitrary file uploads or execute arbitrary code.
- CVE-2017-6316CRITICALCVSS 9.8EG 9.8⚠ KEV2017-07-20
Citrix NetScaler SD-WAN devices through v9.1.2.26.561201 allow remote attackers to execute arbitrary shell commands as root via a CGISESSID cookie. On CloudBridge (the former name of NetScaler SD-WAN) devices, the cookie name was CAKEPHP r…
- CVE-2017-9791CRITICALCVSS 9.8EG 9.8⚠ KEV2017-07-10
The Struts 1 plugin in Apache Struts 2.1.x and 2.3.x might allow remote code execution via a malicious field value passed in a raw message to the ActionMessage.
- CVE-2017-3881CRITICALCVSS 9.8EG 9.8⚠ KEV2017-03-17
A vulnerability in the Cisco Cluster Management Protocol (CMP) processing code in Cisco IOS and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause a reload of an affected device or remotely execute code with ele…
- CVE-2014-8361CRITICALCVSS 9.8EG 9.8⚠ KEV2015-05-01
The miniigd SOAP service in Realtek SDK allows remote attackers to execute arbitrary code via a crafted NewInternalClient request, as exploited in the wild through 2023.
- CVE-2012-1823CRITICALCVSS 9.8EG 9.8⚠ KEV2012-05-11
sapi/cgi/cgi_main.c in PHP before 5.3.12 and 5.4.x before 5.4.2, when configured as a CGI script (aka php-cgi), does not properly handle query strings that lack an = (equals sign) character, which allows remote attackers to execute arbitra…
- CVE-2007-3010CRITICALCVSS 9.8EG 9.8⚠ KEV2007-09-18
masterCGI in the Unified Maintenance Tool in Alcatel OmniPCX Enterprise Communication Server R7.1 and earlier allows remote attackers to execute arbitrary commands via shell metacharacters in the user parameter during a ping action.
- CVE-2022-3075CRITICALCVSS 9.6EG 9.6⚠ KEV2022-09-26
Insufficient data validation in Mojo in Google Chrome prior to 105.0.5195.102 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page.
- CVE-2023-2868CRITICALCVSS 9.4EG 9.4⚠ KEV2023-05-24
A remote command injection vulnerability exists in the Barracuda Email Security Gateway (appliance form factor only) product effecting versions 5.1.3.001-9.2.0.006. The vulnerability arises out of a failure to comprehensively sanitize the …
- CVE-2025-54236CRITICALCVSS 9.1EG 9.1⚠ KEV2025-09-09
Adobe Commerce versions 2.4.9-alpha2, 2.4.8-p2, 2.4.7-p7, 2.4.6-p12, 2.4.5-p14, 2.4.4-p15 and earlier are affected by an Improper Input Validation vulnerability. A successful attacker can abuse this to achieve session takeover, increasing …
- CVE-2020-1040CRITICALCVSS 9.0EG 9.0⚠ KEV2020-07-14
A remote code execution vulnerability exists when Hyper-V RemoteFX vGPU on a host server fails to properly validate input from an authenticated user on a guest operating system, aka 'Hyper-V RemoteFX vGPU Remote Code Execution Vulnerabilit…
- CVE-2026-34197CRITICALCVSS 8.8EG 9.0⚠ KEV2026-04-07
Improper Input Validation, Improper Control of Generation of Code ('Code Injection') vulnerability in Apache ActiveMQ Broker, Apache ActiveMQ. Apache ActiveMQ Classic exposes the Jolokia JMX-HTTP bridge at /api/jolokia/ on the web console…
- CVE-2025-8876CRITICALCVSS 8.8EG 9.0⚠ KEV2025-08-14
Improper Input Validation vulnerability in N-able N-central allows OS Command Injection.This issue affects N-central: before 2025.3.1.
- CVE-2025-6558CRITICALCVSS 8.8EG 9.0⚠ KEV2025-07-15
Insufficient validation of untrusted input in ANGLE and GPU in Google Chrome prior to 138.0.7204.157 allowed a remote attacker to potentially perform a sandbox escape via a crafted HTML page. (Chromium security severity: High)
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