CVE-2021-28994 is a memory exhaustion vulnerability affecting Kopano Groupware Core (versions through 8.7.16, 9.x through 9.1.0, 10.x through 10.0.7, and 11.x through 11.0.1) and Zarafa (versions 6.30.x through 7.2.x). This flaw allows an unauthenticated attacker to trigger a denial-of-service by sending specially crafted, long HTTP headers. Rated with a CVSS score of 7.5 (High), this vulnerability is easily exploitable over the network with low attack complexity, leading to high availability impact. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
<= 8.7.16CPE matchmatch criteria | cpe:2.3:a:kopano:groupware_core:*:*:*:*:*:*:*:* | ||
>= 9.0.0, <= 9.1.0CPE matchmatch criteria | cpe:2.3:a:kopano:groupware_core:*:*:*:*:*:*:*:* | ||
>= 10.0.0, <= 10.0.7CPE matchmatch criteria | cpe:2.3:a:kopano:groupware_core:*:*:*:*:*:*:*:* | ||
>= 11.0.0, <= 11.0.1CPE matchmatch criteria | cpe:2.3:a:kopano:groupware_core:*:*:*:*:*:*:*:* | ||
>= 6.30.0, <= 7.2.6CPE matchmatch criteria | cpe:2.3:a:zarafa:zarafa:*:*:*:*:*:*:*:* |
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.
Remediation records are not available for this CVE.