CVE-2017-15891

6.5 mediumEPSS 1.0%

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.

Severity

CVSS 3.0

6.5 medium

CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

EPSS: 1.0% chance of exploitation in the next 30 days; higher than 63% of CVEs (scores of 2026-10-31)
CWE: CWE-284
Published: 2017-12-08
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

synology:calendar

References

https://www.synology.com/en-global/support/security/Synology_SA_17_68_Calendar
https://www.synology.com/en-global/support/security/Synology_SA_17_68_Calendar

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