How severe is CVE-2018-5281?

CVE-2018-5281 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2018-5281 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (83rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-5281?

CVE-2018-5281 affects Sonicwall Sonicos. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-5281?

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

When was CVE-2018-5281 published?

CVE-2018-5281 was published on 2018-01-08 and last updated on 2026-06-17.

CVE-2018-5281

CVE-2018-5281 is a medium-severity vulnerability in Sonicwall Sonicos with a CVSS 3.x base score of 5.4. 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 5.4)
CVSS v2: 3.5
EPSS exploit prediction: 3% (83rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Sonicwall Sonicos
Published: 2018-01-08
Last modified: 2026-06-17

Description

SonicWall SonicOS on Network Security Appliance (NSA) 2017 Q4 devices has XSS via the CFS Custom Category and Cloud AV DB Exclusion Settings screens.

Frequently asked questions

What is CVE-2018-5281?: SonicWall SonicOS on Network Security Appliance (NSA) 2017 Q4 devices has XSS via the CFS Custom Category and Cloud AV DB Exclusion Settings screens.
How severe is CVE-2018-5281?: CVE-2018-5281 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2018-5281 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (83rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-5281?: CVE-2018-5281 affects Sonicwall Sonicos. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-5281?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2018-5281 published?: CVE-2018-5281 was published on 2018-01-08 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:sonicwall:sonicos:*:*:*:*:*:*:*:*

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