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Vulnerability record · CVE-2019-19907 · published 19 December 2019

CVE-2019-19907: Kopano groupware core classic buffer overflow vulnerability

Kopano · Groupware Core

HrAddFBBlock in libfreebusy/freebusyutil.cpp in Kopano Groupware Core before 8.7.7 allows out-of-bounds access, as demonstrated by mishandling of an array copy during parsing of ICal data.

9.8 CVSS 3.1 Critical EPSS 2.2% · top 18.3% CWE-120 · Classic buffer overflow
9.8CVSS 3.1 base score, v2 7.5
2.2%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
6References
17 Jun 2026Last modified by NVD

Description

HrAddFBBlock in libfreebusy/freebusyutil.cpp in Kopano Groupware Core before 8.7.7 allows out-of-bounds access, as demonstrated by mishandling of an array copy during parsing of ICal data.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://lists.debian.org/debian-lts-announce/2023/03/msg00006.html
https://stash.kopano.io/projects/KC/repos/kopanocore/browse/RELNOTES.txt Release Notes
https://stash.kopano.io/projects/KC/repos/kopanocore/commits/4e02b420fff Patch
https://lists.debian.org/debian-lts-announce/2023/03/msg00006.html
https://stash.kopano.io/projects/KC/repos/kopanocore/browse/RELNOTES.txt Release Notes
https://stash.kopano.io/projects/KC/repos/kopanocore/commits/4e02b420fff Patch

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Source: NIST National Vulnerability Database (record CVE-2019-19907), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.