Medium severity · published Dec 8, 2017
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…
6.5
CVSS
1%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.0% · higher than 64% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CA
Calendar · Synology
before 2.0.1-0242 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2017-15891
CVE.org
https://www.cve.org/CVERecord?id=CVE-2017-15891
Vendor Advisory
https://www.synology.com/en-global/support/security/Synology_SA_17_68_Calendar
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