CVE-2021-34812

HIGH 7.5CVE-2021-34812 · Published 18/06/2021 · updated 17/06/2026

In short

CVE-2021-34812 is a HIGH (CVSS 7.5) vulnerability affecting calendar (synology).
Chance of exploitation in the next 30 days (EPSS): 1.1%, higher than 66.2% of all vulnerabilities.
Fix: update to 2.4.0-0761 or later.

Package	Affected versions	Patched versions
calendar synology	`< 2.4.0-0761`	`2.4.0-0761`

Description

Use of hard-coded credentials vulnerability in php component in Synology Calendar before 2.4.0-0761 allows remote attackers to obtain sensitive information via unspecified vectors.

References

synology.com/security/advisory/Synology_SA_21_12 · Vendor Advisory

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Package

Affected versions

Patched versions

calendar

synology

< 2.4.0-0761

2.4.0-0761

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