How severe is CVE-2017-16768?

CVE-2017-16768 has a CVSS 3.x base score of 4.8, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2017-16768 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-2017-16768?

CVE-2017-16768 affects Synology Mailplus Server. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-16768?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2017-16768 published?

CVE-2017-16768 was published on 2017-12-27 and last updated on 2026-06-17.

CVE-2017-16768

CVE-2017-16768 is a medium-severity vulnerability in Synology Mailplus Server with a CVSS 3.x base score of 4.8. 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-79.

Key facts

Severity: Medium (CVSS 3.x base score 4.8)
CVSS v2: 3.5
EPSS exploit prediction: 1% (59th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Synology Mailplus Server
Published: 2017-12-27
Last modified: 2026-06-17

Description

Cross-site scripting (XSS) vulnerability in User Policy editor in Synology MailPlus Server before 1.4.0-0415 allows remote authenticated users to inject arbitrary HTML via the name parameter.

Frequently asked questions

What is CVE-2017-16768?: Cross-site scripting (XSS) vulnerability in User Policy editor in Synology MailPlus Server before 1.4.0-0415 allows remote authenticated users to inject arbitrary HTML via the name parameter.
How severe is CVE-2017-16768?: CVE-2017-16768 has a CVSS 3.x base score of 4.8, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2017-16768 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-2017-16768?: CVE-2017-16768 affects Synology Mailplus Server. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-16768?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2017-16768 published?: CVE-2017-16768 was published on 2017-12-27 and last updated on 2026-06-17.

References

https://www.synology.com/en-global/support/security/Synology_SA_17_81

Affected products (1)

cpe:2.3:a:synology:mailplus_server:*:*:*:*:*:*:*:*

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