CVE-2021-43980 is a concurrency bug in Apache Tomcat versions 10.1.0 to 10.1.0-M12, 10.0.0-M1 to 10.0.18, 9.0.0-M1 to 9.0.60, and 8.5.0 to 8.5.77, including affected Debian packages. This flaw, rated with a CVSS score of 3.7 (LOW), could lead to client connections sharing an Http11Processor instance, causing responses to be sent to the wrong client. While the attack vector is network-based, the attack complexity is high, and the potential impact is limited to information disclosure (CWE-362). There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
>= 8.5.0, <= 8.5.77CPE matchmatch criteria | cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:* | ||
>= 9.0.0, <= 9.0.60CPE matchmatch criteria | cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:* | ||
>= 10.0.0, <= 10.0.18CPE matchmatch criteria | cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:* | ||
10.1.0CPE matchmatch criteria | cpe:2.3:a:apache:tomcat:10.1.0:milestone1:*:*:*:*:*:* | ||
10.1.0CPE matchmatch criteria | cpe:2.3:a:apache:tomcat:10.1.0:milestone10:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.3 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.