How severe is CVE-2018-8919?

CVE-2018-8919 has a CVSS 3.x base score of 8.3, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2018-8919 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (70th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-8919?

CVE-2018-8919 affects Synology Diskstation Manager. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-8919?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2018-8919 published?

CVE-2018-8919 was published on 2018-12-24 and last updated on 2026-06-17.

CVE-2018-8919

CVE-2018-8919 is a high-severity vulnerability in Synology Diskstation Manager with a CVSS 3.x base score of 8.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-200.

Key facts

Severity: High (CVSS 3.x base score 8.3)
CVSS v2: 5.0
EPSS exploit prediction: 1% (70th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-200
Affected product: Synology Diskstation Manager
Published: 2018-12-24
Last modified: 2026-06-17

Description

Information exposure vulnerability in SYNO.Core.Desktop.SessionData in Synology DiskStation Manager (DSM) before 6.1.6-15266 allows remote attackers to steal credentials via unspecified vectors.

Frequently asked questions

What is CVE-2018-8919?: Information exposure vulnerability in SYNO.Core.Desktop.SessionData in Synology DiskStation Manager (DSM) before 6.1.6-15266 allows remote attackers to steal credentials via unspecified vectors.
How severe is CVE-2018-8919?: CVE-2018-8919 has a CVSS 3.x base score of 8.3, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2018-8919 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (70th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-8919?: CVE-2018-8919 affects Synology Diskstation Manager. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-8919?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2018-8919 published?: CVE-2018-8919 was published on 2018-12-24 and last updated on 2026-06-17.

References

https://www.synology.com/security/advisory/Synology_SA_18_14

Affected products (1)

cpe:2.3:o:synology:diskstation_manager:*:*:*:*:*:*:*:*

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