How severe is CVE-2026-28269?

CVE-2026-28269 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2026-28269 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-28269?

CVE-2026-28269 affects Accellion Kiteworks. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-28269?

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

Does CVE-2026-28269 have an EU (EUVD) identifier?

Yes. CVE-2026-28269 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-8918.

When was CVE-2026-28269 published?

CVE-2026-28269 was published on 2026-02-26 and last updated on 2026-06-17.

CVE-2026-28269

CVE-2026-28269 is a medium-severity vulnerability in Accellion Kiteworks with a CVSS 3.x base score of 5.9. 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-78.

Key facts

Severity: Medium (CVSS 3.x base score 5.9)
EPSS exploit prediction: 3% (87th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-8918
Weakness: CWE-78
Affected product: Accellion Kiteworks
Published: 2026-02-26
Last modified: 2026-06-17

Description

Kiteworks is a private data network (PDN). Prior to version 9.2.0, avulnerability in Kiteworks command execution functionality allows authenticated users to redirect command output to arbitrary file locations. This could be exploited to overwrite critical system files and gain elevated access. Version 9.2.0 contains a patch.

Frequently asked questions

What is CVE-2026-28269?: Kiteworks is a private data network (PDN). Prior to version 9.2.0, avulnerability in Kiteworks command execution functionality allows authenticated users to redirect command output to arbitrary file locations. This could be exploited to overwrite critical system files and gain elevated access. Version 9.2.0 contains a patch.
How severe is CVE-2026-28269?: CVE-2026-28269 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2026-28269 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-28269?: CVE-2026-28269 affects Accellion Kiteworks. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-28269?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-28269 have an EU (EUVD) identifier?: Yes. CVE-2026-28269 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-8918.
When was CVE-2026-28269 published?: CVE-2026-28269 was published on 2026-02-26 and last updated on 2026-06-17.

References

https://github.com/kiteworks/security-advisories/security/advisories/GHSA-6j64-6fpp-9453

Affected products (1)

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

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