CVE-2021-41079
7.5 HIGHApache Tomcat 8.5.0 to 8.5.63, 9.0.0-M1 to 9.0.43 and 10.0.0-M1 to 10.0.2 did not properly validate incoming TLS packets
Published: 2021-09-16 · Last updated: 2026-06-17
Severity and scoring
- CVSS
- 7.5 HIGH
- Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- CWE
- CWE-20, CWE-835
Affected products
| Vendor | Product |
|---|---|
| apache | debian_linux, management_services_for_element_software_and_netapp_hci, tomcat |
| debian | debian_linux, management_services_for_element_software_and_netapp_hci, tomcat |
| netapp | debian_linux, management_services_for_element_software_and_netapp_hci, tomcat |
Description
Apache Tomcat 8.5.0 to 8.5.63, 9.0.0-M1 to 9.0.43 and 10.0.0-M1 to 10.0.2 did not properly validate incoming TLS packets. When Tomcat was configured to use NIO+OpenSSL or NIO2+OpenSSL for TLS, a specially crafted packet could be used to trigger an infinite loop resulting in a denial of service.
Source: NVD
References
- [NVD]https://nvd.nist.gov/vuln/detail/CVE-2021-41079
- [Other]https://lists.apache.org/thread.html/r6b6b674e3f168dd010e67dbe6848b866e2acf26371452fdae313b98a%40%3Cusers.tomcat.apache.org%3E
- [Other]https://lists.apache.org/thread.html/rb4de81ac647043541a32881099aa6eb5a23f1b7fd116f713f8ab9dbe%40%3Cdev.tomcat.apache.org%3E
- [Vendor advisory]https://lists.apache.org/thread.html/rccdef0349fdf4fb73a4e4403095446d7fe6264e0a58e2df5c6799434%40%3Cannounce.tomcat.apache.org%3E
- [Other]https://lists.debian.org/debian-lts-announce/2021/09/msg00012.html
- [Other]https://security.netapp.com/advisory/ntap-20211008-0005/
- [Other]https://www.debian.org/security/2021/dsa-4986
- [Other]https://lists.apache.org/thread.html/r6b6b674e3f168dd010e67dbe6848b866e2acf26371452fdae313b98a%40%3Cusers.tomcat.apache.org%3E
- [Other]https://lists.apache.org/thread.html/rb4de81ac647043541a32881099aa6eb5a23f1b7fd116f713f8ab9dbe%40%3Cdev.tomcat.apache.org%3E
- [Vendor advisory]https://lists.apache.org/thread.html/rccdef0349fdf4fb73a4e4403095446d7fe6264e0a58e2df5c6799434%40%3Cannounce.tomcat.apache.org%3E
- [Other]https://lists.debian.org/debian-lts-announce/2021/09/msg00012.html
- [Other]https://security.netapp.com/advisory/ntap-20211008-0005/
- [Other]https://www.debian.org/security/2021/dsa-4986
Related CVEs
Same vendor
- CVE-2026-50645 — There is no restriction on the amount of attachment headers that a message can contain when being deserialized by Apache CXF, which can l... (7.5 HIGH)
- CVE-2026-50634 — A vulnerability in Apache CXF's JwsJsonContainerRequestFilter can be exploited to cause CXF to process metadata that was not authenticate... (6.5 MEDIUM)
- CVE-2026-50633 — A JNDI Injection vulnerability has been discovered in Apache CXF's JCA integration module, which can allow for code execution, if an atta... (8.1 HIGH)
- CVE-2026-50632 — A further incomplete fix for a previous advisory CVE-2026-44417 (Untrusted JMS configuration can lead to RCE) for Apache CXF has been ide... (8.1 HIGH)
- CVE-2026-50631 — A race condition in AbstractOAuthDataProvider allows concurrent requests using the same Refresh Token to bypass single-use semantics and ... (7.4 HIGH)
Same CWE
- CVE-2026-12191 — A vulnerability was found in Comma AI Openpilot 0.11 (7.8 HIGH)
- CVE-2026-45013 — ApostropheCMS is an open-source Node.js content management system (8.1 HIGH)
- CVE-2026-54133 — jmespath.php allows users to use JMESPath, software for declaratively specifying how to extract elements from a JSON document, in PHP app... (9.8 CRITICAL)
- CVE-2026-47196 — Quest Bot is an opensource Discord Bot
- CVE-2026-50633 — A JNDI Injection vulnerability has been discovered in Apache CXF's JCA integration module, which can allow for code execution, if an atta... (8.1 HIGH)