CVE-2021-28994

PoC —

CVSS 3.1

7.5 high

EPSS

2%p80

Published

Mar 31, 2021 (Mar 31, 2021)

Modified

Jun 17, 2026

Description

kopano-ical (formerly zarafa-ical) in Kopano Groupware Core 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 6.30.x through 7.2.x allows memory exhaustion via long HTTP headers.

Vendors: kopano zarafa
Products: groupware core, zarafa
Weakness: CWE-770
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

NVD CVE.org GitHub PoCs EPSS (2.0%)

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