How severe is CVE-2026-28272?

CVE-2026-28272 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2026-28272 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-2026-28272?

CVE-2026-28272 affects Accellion Kiteworks. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-28272?

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-2026-28272 have an EU (EUVD) identifier?

Yes. CVE-2026-28272 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-9067.

When was CVE-2026-28272 published?

CVE-2026-28272 was published on 2026-02-27 and last updated on 2026-06-17.

CVE-2026-28272

CVE-2026-28272 is a high-severity vulnerability in Accellion Kiteworks with a CVSS 3.x base score of 8.1. 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: High (CVSS 3.x base score 8.1)
EPSS exploit prediction: 0% (25th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-9067
Weakness: CWE-79
Affected product: Accellion Kiteworks
Published: 2026-02-27
Last modified: 2026-06-17

Description

Kiteworks is a private data network (PDN). Prior to version 9.2.0, a vulnerability in Kiteworks Email Protection Gateway allows authenticated administrators to inject malicious scripts through a configuration interface. The stored script executes when users interact with the affected user interface. Version 9.2.0 contains a patch for the issue.

Frequently asked questions

What is CVE-2026-28272?: Kiteworks is a private data network (PDN). Prior to version 9.2.0, a vulnerability in Kiteworks Email Protection Gateway allows authenticated administrators to inject malicious scripts through a configuration interface. The stored script executes when users interact with the affected user interface. Version 9.2.0 contains a patch for the issue.
How severe is CVE-2026-28272?: CVE-2026-28272 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2026-28272 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-2026-28272?: CVE-2026-28272 affects Accellion Kiteworks. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-28272?: 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-2026-28272 have an EU (EUVD) identifier?: Yes. CVE-2026-28272 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-9067.
When was CVE-2026-28272 published?: CVE-2026-28272 was published on 2026-02-27 and last updated on 2026-06-17.

References

https://github.com/kiteworks/security-advisories/security/advisories/GHSA-7hxj-ch78-xqgr

Affected products (1)

cpe:2.3:a:accellion:kiteworks:*:*:*:*:*:*:*:*

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