What is CVE-2017-15891?

CVE-2017-15891 is a medium-severity vulnerability in Synology Calendar, classified under Improper Access Control. CVSS score: 6.5/10. Published 2017-12-08.

How severe is CVE-2017-15891?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Vulnerability in Synology Calendar

CVE-2017-15891

Improper access control vulnerability in SYNO.Cal.EventBase in Synology Calendar before 2.0.1-0242 allows remote authenticated users to modify calendar event via unspecified vectors.

EPSS: 0.010 (60.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N.

Affected products

Synology Calendar
Synology Calendar — versions before 2.0.1-0242

Weakness classification (CWE)

CWE-284 — Improper Access Control

References

security@synology.com (x_refsource_CONFIRM, Vendor Advisory)

Frequently asked questions

What is CVE-2017-15891?: CVE-2017-15891 is a medium-severity vulnerability in Synology Calendar, classified under Improper Access Control. CVSS score: 6.5/10. Published 2017-12-08.
How severe is CVE-2017-15891?: Medium severity. CVSS v3 base score is 6.5 out of 10.