How severe is CVE-2026-0204?

CVE-2026-0204 has a CVSS 3.x base score of 8.0, rated high severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-0204 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (34th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-0204?

CVE-2026-0204 affects Sonicwall Sonicos. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-0204?

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.

Does CVE-2026-0204 have an EU (EUVD) identifier?

Yes. CVE-2026-0204 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-26254.

When was CVE-2026-0204 published?

CVE-2026-0204 was published on 2026-04-29 and last updated on 2026-06-17.

CVE-2026-0204

CVE-2026-0204 is a high-severity vulnerability in Sonicwall Sonicos with a CVSS 3.x base score of 8.0. 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-306.

Key facts

Severity: High (CVSS 3.x base score 8.0)
EPSS exploit prediction: 0% (34th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-26254
Weakness: CWE-306
Affected product: Sonicwall Sonicos
Published: 2026-04-29
Last modified: 2026-06-17

Description

A vulnerability in the access control mechanism of SonicOS may allow certain management interface functions to be accessible under specific conditions.

Frequently asked questions

What is CVE-2026-0204?: A vulnerability in the access control mechanism of SonicOS may allow certain management interface functions to be accessible under specific conditions.
How severe is CVE-2026-0204?: CVE-2026-0204 has a CVSS 3.x base score of 8.0, rated high severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-0204 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (34th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-0204?: CVE-2026-0204 affects Sonicwall Sonicos. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-0204?: 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.
Does CVE-2026-0204 have an EU (EUVD) identifier?: Yes. CVE-2026-0204 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-26254.
When was CVE-2026-0204 published?: CVE-2026-0204 was published on 2026-04-29 and last updated on 2026-06-17.

References

https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2026-0004

Affected products (1)

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

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