AUGUST 4, 2026
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Case File

CVE-2021-28994

HIGH · CVSS 7.5 EPSS 2.05%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-03-31 · Last synced 2026-08-04

CyberRota Analysis

This is a high severity vulnerability with a CVSS score of 7.5. See the original NVD description below for full technical details.

CVE
CVE-2021-28994
Severity
HIGH
CVSS
7.5
EPSS
2.05%

Original NVD 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.

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