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.
Published 2021-07-12 15:15:08
Updated 2022-10-27 01:08:51
View at NVD,   CVE.org

Products affected by CVE-2021-30640

Threat overview for CVE-2021-30640

Top countries where our scanners detected CVE-2021-30640
Top open port discovered on systems with this issue 80
IPs affected by CVE-2021-30640 523,814
Threat actors abusing to this issue? Yes
Find out if you* are affected by CVE-2021-30640!
*Directly or indirectly through your vendors, service providers and 3rd parties. Powered by attack surface intelligence from SecurityScorecard.

Exploit prediction scoring system (EPSS) score for CVE-2021-30640

0.24%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 48 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2021-30640

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
5.8
MEDIUM AV:N/AC:M/Au:N/C:P/I:P/A:N
8.6
4.9
NIST
6.5
MEDIUM CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N
2.2
4.2
NIST

CWE ids for CVE-2021-30640

  • The product prepares a structured message for communication with another component, but encoding or escaping of the data is either missing or done incorrectly. As a result, the intended structure of the message is not preserved.
    Assigned by: nvd@nist.gov (Primary)

References for CVE-2021-30640

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