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Fencer Vulns
medium 5.5

CVE-2019-11820 json

Information exposure through process environment vulnerability in Synology Calendar before 2.3.3-0620 allows local users to obtain credenti…

published 2019-05-09 7 y ago modified 2026-06-17 4 mo ago also EUVD-2019-3486

cvss
5.5
version 3.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 20%
public exploits
0
none known

Summary

Information exposure through process environment vulnerability in Synology Calendar before 2.3.3-0620 allows local users to obtain credentials via cmdline.

Patch / fix

  • Synology Calendar 2.3.3-0620

Exploit prediction

0.28% chance of exploitation in the next 30 days, higher than 20% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.0 5.5 CVSS:3.0/AV:L/AC:L/PR:H/UI:R/S:C/C:H/I:N/A:N
NVD 3.1 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
NVD 2.0 2.1 AV:L/AC:L/Au:N/C:P/I:N/A:N

Affected products

  • Synology Calendar

Classification

Weakness
  • CWE-522 Insufficiently Protected Credentials

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.