How severe is CVE-2018-8920?

CVE-2018-8920 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2018-8920 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (59th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-8920?

CVE-2018-8920 affects Synology Diskstation Manager. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-8920?

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-2018-8920 published?

CVE-2018-8920 was published on 2018-12-24 and last updated on 2026-06-17.

CVE-2018-8920

CVE-2018-8920 is a high-severity vulnerability in Synology Diskstation Manager with a CVSS 3.x base score of 7.2. 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-116.

Key facts

Severity: High (CVSS 3.x base score 7.2)
CVSS v2: 6.5
EPSS exploit prediction: 1% (59th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-116
Affected product: Synology Diskstation Manager
Published: 2018-12-24
Last modified: 2026-06-17

Description

Improper neutralization of escape vulnerability in Log Exporter in Synology DiskStation Manager (DSM) before 6.1.6-15266 allows remote attackers to inject arbitrary content to have an unspecified impact by exporting an archive in CSV format.

Frequently asked questions

What is CVE-2018-8920?: Improper neutralization of escape vulnerability in Log Exporter in Synology DiskStation Manager (DSM) before 6.1.6-15266 allows remote attackers to inject arbitrary content to have an unspecified impact by exporting an archive in CSV format.
How severe is CVE-2018-8920?: CVE-2018-8920 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2018-8920 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (59th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-8920?: CVE-2018-8920 affects Synology Diskstation Manager. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-8920?: 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-2018-8920 published?: CVE-2018-8920 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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