# CVE-2026-23635 — kiteworks Secure Data Forms

> As of 2026-03-25, CVE-2026-23635 is a MEDIUM-severity vulnerability in kiteworks Secure Data Forms, CVSS v3.1 6.5, EPSS 0.3% (22.6th percentile). Threadlinqs Intelligence links 1 tracked threat campaign to CVE-2026-23635, most recently “Kiteworks Urges Global Customers to Shut Down Servers for 6-9 Hours Over Federally-Warned Potential Zero-Day Targeting”.

**Last updated:** 2026-03-25

## What is CVE-2026-23635?

Kiteworks is a private data network (PDN). In Kiteworks Secure Data Forms prior to version 9.2.1, a misconfiguration of the security attributes could potentially lead to Unprotected Transport of Credentials under certain circumstances. Upgrade Kiteworks to version 9.2.1 or later to receive a patch.

The record classifies CVE-2026-23635 under weakness class [CWE-523](https://cwe.mitre.org/data/definitions/523.html). Its CVSS v3 base vector states that the flaw is reachable remotely over the network, needs no prior authentication, needs no user interaction, and has high impact on confidentiality. 1 affected-product entry is recorded, across 1 vendor, listed below. The identifier was first published 214 days ago.

## Severity and exploitation probability

- **CVSS v3.1 base score:** 6.5 — MEDIUM (`CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N`)
- **EPSS (FIRST):** 0.3% probability of exploitation in the next 30 days, higher than 22.6% of all scored CVEs
- **CISA KEV:** Not listed in the CISA Known Exploited Vulnerabilities catalog
- **Threadlinqs priority:** 4.2/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
- **Published:** 2026-03-25

## Is CVE-2026-23635 being exploited?

It currently carries a trending score of 11 in the Threadlinqs vulnerability feed.

## Affected products and versions

- [kiteworks](https://intel.threadlinqs.com/vendors/kiteworks): Secure Data Forms

## How to fix CVE-2026-23635

No vendor patch reference has been recorded for CVE-2026-23635 in the tracked sources. Follow the references below for a fix, and treat the products listed above as exposed until the vendor states otherwise.

## Threat activity tracking CVE-2026-23635

1 tracked threat in the Threadlinqs corpus references CVE-2026-23635, either in the campaign’s CVE list or as an indicator on the campaign record.

- [Kiteworks Urges Global Customers to Shut Down Servers for 6-9 Hours Over Federally-Warned Potential Zero-Day Targeting](https://intel.threadlinqs.com/threat/TL-2026-2670) — HIGH · 2026-09-25

## Sources

Enriched from CVE.org, FIRST EPSS. Last verified by Threadlinqs on 2026-10-10.

**Vendor advisory and patch**

- [github.com](https://github.com/kiteworks/security-advisories/security/advisories/GHSA-9hw2-6qp4-3v8f)

Canonical: https://intel.threadlinqs.com/cve/CVE-2026-23635
Full detection coverage and IOCs for threats exploiting CVE-2026-23635 via the Threadlinqs MCP server (Purple tier): https://intel.threadlinqs.com/mcp