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CVE-2026-102099: Kiteworks Core before version 9.5.0 is vulnerable to Arbitrary File Write

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This month
HIGH 7.2UPGRADE

CVE-2026-102099 is a high-severity flaw (CVSS 7.2) affecting kiteworks. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Kiteworks Core before version 9.5.0 is vulnerable to Arbitrary File Write. An improper restriction of a user-supplied file path in a Kiteworks administrative export feature could allow an authenticated administrator to write a file to an arbitrary location on the underlying host, potentially leading to command execution on the appliance. Exploitation requires an existing, authenticated administrative account with access to the affected export fun

Why this priority

  • High severity

A fixed release or distro patch exists.

Risk facts

CVSS score7.2 (High)
Attack vectorNetwork (remote)
Attack complexityLow
Privileges neededHigh
User interactionNone
EPSS exploit chance2.0% (top 20%)
CISA exploited listNo
WeaknessCWE-22
Published2026-09-30
Last modified2026-10-07
Publisher (CNA): Cybersecurity and Infrastructure Security Agency (CISA) U.S. Civilian Government · Vendor: accellion

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Last updated 2026-10-07 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

accellion kiteworks UPGRADE
Affected: < 9.5.0
Fixed in: 9.5.0
Safe to downgrade to: no unaffected older release
1. Check installed version
apt-cache policy kiteworks || rpm -q kiteworks || kiteworks --version
2. UPGRADE to 9.5.0 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade kiteworks
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade kiteworks
Note
Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.
Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-102099?

kiteworks: upgrade to 9.5.0. Exact commands for each OS are on this page.

Is CVE-2026-102099 being exploited?

CVE-2026-102099 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-102099 affect?

CVE-2026-102099 affects kiteworks. Severity is high (CVSS 7.2). Kiteworks Core before version 9.5.0 is vulnerable to Arbitrary File Write. An improper restriction of a user-supplied file path in a Kiteworks administrative export feature could allow an authenticated administrator to write a file to an ar

How urgent is CVE-2026-102099?

Priority 45/100. High severity

Related CVEs

References

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