High severity7.5NVD Advisory· Published Mar 31, 2021· Updated Jun 17, 2026

CVE-2021-28994

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.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

Kopano/Kopano Groupware Coredescription
Kopano/Kopano Corellm-fuzzy
Range: <=8.7.16, <=9.1.0, <=10.0.7, <=11.0.1
Zarafa/Zarafallm-fuzzy2 versions
6.30.x - 7.2.x+ 1 more
- (no CPE)range: 6.30.x - 7.2.x
- cpe:2.3:a:zarafa:zarafa:*:*:*:*:*:*:*:*range: >=6.30.0,<=7.2.6
Kopano/Groupware Core
cpe:2.3:a:kopano:groupware_core:*:*:*:*:*:*:*:*
Range: <=8.7.16

Patches

Vulnerability mechanics

References

www.openwall.com/lists/oss-security/2021/03/19/6nvdExploitMailing ListThird Party Advisory
www.openwall.com/lists/oss-security/2021/04/01/1nvdMailing ListThird Party Advisory
www.openwall.com/lists/oss-security/2021/04/25/1nvdMailing ListThird Party Advisory

News mentions

No linked articles in our index yet.

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