CVE catalog
CVE-2021-28994
UBUNTU-CVE-2021-28994
- Severity
- High · CVSS 7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Published
- Updated
- Source
- [NVD] · [CVE record]
- EPSS
- 2.05% · Oct 25, 2026
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.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Ubuntu | kopanocore | pro | 8.1.0-3ubuntu5 | vulnerable |
| Ubuntu | kopanocore | pro | 8.1.0-3ubuntu6 | vulnerable |
| Ubuntu | kopanocore | pro | 8.3.4-4ubuntu4 | vulnerable |
| Ubuntu | kopanocore | pro | 8.5.2-1ubuntu1 | vulnerable |
| Ubuntu | kopanocore | pro | 8.5.5-0ubuntu1 | vulnerable |
| Ubuntu | kopanocore | pro | 8.5.5-0ubuntu1+esm1 | vulnerable |
| Ubuntu | kopanocore | 20.04 | 8.7.0-3build2 | vulnerable |
| Ubuntu | kopanocore | 20.04 | 8.7.0-5ubuntu5 | vulnerable |
| Ubuntu | kopanocore | 20.04 | 8.7.0-5ubuntu6 | vulnerable |
| Ubuntu | kopanocore | 20.04 | 8.7.0-6ubuntu1 | vulnerable |
| Ubuntu | kopanocore | 20.04 | 8.7.0-6ubuntu2 | vulnerable |
| Ubuntu | kopanocore | 20.04 | 8.7.0-6ubuntu3 | vulnerable |
| Ubuntu | kopanocore | 20.04 | 8.7.0-7ubuntu1 | vulnerable |
| Ubuntu | kopanocore | 20.04 | 8.7.0-7ubuntu1.1 | vulnerable |
| Ubuntu | kopanocore | 22.04 | 8.7.0-7.1ubuntu4 | vulnerable |
| Ubuntu | kopanocore | 22.04 | 8.7.0-7.1ubuntu6 | vulnerable |
| Ubuntu | kopanocore | 22.04 | 8.7.0-7.1ubuntu7 | vulnerable |
| Ubuntu | kopanocore | 22.04 | 8.7.0-7.1ubuntu8 | vulnerable |
| Ubuntu | kopanocore | 22.04 | 8.7.0-7.1ubuntu10 | vulnerable |
| Ubuntu | kopanocore | 22.04 | 8.7.0-7.1ubuntu10.1 | vulnerable |
Fixed-version evidence
OpenFactory catalog packages
No matching packages in this catalog.
Observed: