CVE-2021-30639 is a Denial of Service (DoS) vulnerability in Apache Tomcat versions 10.0.3-10.0.4, 9.0.44, and 8.5.64, stemming from an error in non-blocking I/O error handling that prevents subsequent requests from being processed. This vulnerability has a CVSS score of 7.5 (HIGH), indicating it can be exploited remotely with low attack complexity and no user interaction, leading to a complete loss of availability. While the vulnerability affects several Apache and McAfee products, there is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
8.5.64CPE matchmatch criteria | cpe:2.3:a:apache:tomcat:8.5.64:*:*:*:*:*:*:* | ||
9.0.44CPE matchmatch criteria | cpe:2.3:a:apache:tomcat:9.0.44:*:*:*:*:*:*:* | ||
10.0.3CPE matchmatch criteria | cpe:2.3:a:apache:tomcat:10.0.3:*:*:*:*:*:*:* | ||
10.0.4CPE matchmatch criteria | cpe:2.3:a:apache:tomcat:10.0.4:*:*:*:*:*:*:* | ||
< 5.10.0CPE matchmatch criteria | cpe:2.3:a:mcafee:epolicy_orchestrator:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.