6.5

CVE-2018-8927: synology calendar Incorrect Authorization

CVSS: 6.5v3.0MediumModified
Published 14-06-2018Last modified 16-09-2024
Open JSON

Vulnerability summary

CVE-2018-8927 is a medium (CVSS 6.5) Incorrect Authorization vulnerability in synology calendar. EPSS estimates a 0.91% chance of exploitation in the next 30 days, higher than 59.2% of scored vulnerabilities.

Overall risk
26/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.5/10
010
Medium · v3.0 (NVD)
EPSS score
0.91%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 14-06-2018
    PublishedVulnerability first disclosed.
  2. 16-09-2024
    Last modifiedVulnerability information updated.

Description

Improper authorization vulnerability in SYNO.Cal.Event in Calendar before 2.1.2-0511 allows remote authenticated users to create arbitrary events via the (1) cal_id or (2) original_cal_id parameter.

CVSS metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

0.91%

Chance of exploitation in the next 30 days

Percentile

59%

Versus all other CVEs

30-day change

0.00 pp

From 0.91% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.91%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Synology1 product
  • calendar≥ unspecified, < 2.1.2-0511 | < 2.1.2-0511

1 vendor · 1 product

References

1 links