CVE-2021-30640

MediumCVSS 6.5/10Last modified Oct 8, 2026

Description

A vulnerability in the JNDI Realm of Apache Tomcat allows an attacker to authenticate using variations of a valid user name and/or to bypass some of the protection provided by the LockOut Realm. This issue affects Apache Tomcat 10.0.0-M1 to 10.0.5; 9.0.0.M1 to 9.0.45; 8.5.0 to 8.5.65.

Metrics

CVSS 3.1 6.5/10CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N

Weakness enumeration

CWE-116

Affected software

No affected versions have been published.

Timeline

Published
Jul 12, 2021
Last modified
Oct 8, 2026
NVD status
Modified

Related CVEs from 2021

CVE-2021-306415.3Apache HTTP Server versions 2.4.39 to 2.4.46 Unexpected matching behavior with 'MergeSlashes OFF'CVE-2021-306429.8An input validation flaw in the Symantec Security Analytics web UI 7.2 prior 7.2.7, 8.1, prior to 8.1.3-NSR3, 8.2, prior to 8.2.1-NSR2 or 8.CVE-2021-306489.8The Symantec Advanced Secure Gateway (ASG) and ProxySG web management consoles are susceptible to an authentication bypass vulnerability. AnCVE-2021-306506.1A reflected cross-site scripting (XSS) vulnerability in the Symantec Layer7 API Management OAuth Toolkit (OTK) allows a remote attacker to cCVE-2021-306514.9A malicious authenticated SMG administrator user can obtain passwords for external LDAP/Active Directory servers that they might not otherwiCVE-2021-306527.0A race condition was addressed with additional validation. This issue is fixed in Security Update 2021-002 Catalina, Security Update 2021-00CVE-2021-306537.8This issue was addressed with improved checks. This issue is fixed in macOS Big Sur 11.3, iOS 14.5 and iPadOS 14.5, watchOS 7.4, tvOS 14.5. CVE-2021-306545.5This issue was addressed by removing additional entitlements. This issue is fixed in GarageBand 10.4.3. A local attacker may be able to readCVE-2021-306559.8An application may be able to execute arbitrary code with system privileges. This issue is fixed in macOS Big Sur 11.3, Security Update 2021CVE-2021-306565.5An access issue was addressed with improved memory management. This issue is fixed in iOS 14.5 and iPadOS 14.5. A malicious application may CVE-2021-306575.5A logic issue was addressed with improved state management. This issue is fixed in macOS Big Sur 11.3, Security Update 2021-002 Catalina. A CVE-2021-306585.5This issue was addressed with improved handling of file metadata. This issue is fixed in macOS Big Sur 11.3. A malicious application may byp