How severe is CVE-2026-30903?

CVE-2026-30903 has a CVSS 3.x base score of 9.6, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-30903 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (25th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-30903?

CVE-2026-30903 primarily affects Zoom Workplace Desktop. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2026-30903?

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

Does CVE-2026-30903 have an EU (EUVD) identifier?

Yes. CVE-2026-30903 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-11170.

When was CVE-2026-30903 published?

CVE-2026-30903 was published on 2026-03-11 and last updated on 2026-06-17.

CVE-2026-30903

CVE-2026-30903 is a critical-severity vulnerability in Zoom Workplace Desktop with a CVSS 3.x base score of 9.6. 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-610.

Key facts

Severity: Critical (CVSS 3.x base score 9.6)
EPSS exploit prediction: 0% (25th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-11170
Weakness: CWE-610
Affected product: Zoom Workplace Desktop
Published: 2026-03-11
Last modified: 2026-06-17

Description

External Control of File Name or Path in the Mail feature of Zoom Workplace for Windows before 6.6.0 may allow an unauthenticated user to conduct an escalation of privilege via network access.

Frequently asked questions

What is CVE-2026-30903?: External Control of File Name or Path in the Mail feature of Zoom Workplace for Windows before 6.6.0 may allow an unauthenticated user to conduct an escalation of privilege via network access.
How severe is CVE-2026-30903?: CVE-2026-30903 has a CVSS 3.x base score of 9.6, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-30903 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (25th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-30903?: CVE-2026-30903 primarily affects Zoom Workplace Desktop. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2026-30903?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2026-30903 have an EU (EUVD) identifier?: Yes. CVE-2026-30903 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-11170.
When was CVE-2026-30903 published?: CVE-2026-30903 was published on 2026-03-11 and last updated on 2026-06-17.

References

https://www.zoom.com/en/trust/security-bulletin/zsb-26005

Affected products (2)

cpe:2.3:a:zoom:workplace_desktop:*:*:*:*:*:windows:*:*
cpe:2.3:a:zoom:workplace_virtual_desktop_infrastructure:*:*:*:*:*:windows:*:*

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