Check_MK before 1.2.8p26 mishandles certain errors within the failed-login save feature because of a race condition, which allows remote attackers to obtain sensitive user information by reading a GUI crash report.
https://www.exploit-db.com/exploits/43021/
https://mathias-kettner.de/check_mk_werks.php?werk_id=5208&HTML=yes
http://mathias-kettner.com/check_mk_werks.php?edition_id=raw&branch=1.2.8
Source: Mitre, NVD
Published: 2017-10-02
Updated: 2025-04-20
Base Score: 4.3
Vector: CVSS2#AV:N/AC:M/Au:N/C:P/I:N/A:N
Severity: Medium
Base Score: 5.9
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
EPSS: 0.08652