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Actively exploited

CVE-2025-2749 Kentico Xperience Path Traversal Vulnerability

Kentico Xperience contains a path traversal vulnerability that could allow an authenticated user's Staging Sync Server to upload arbitrary data to path relative locations.

From the CISA KEV catalogue version 2026.11.06, with Cybergen analysis. Updated 6 Nov 2026.

Our Assessment

Should You Worry?

Patch urgentlyCybergen assessment
  • CISA confirmed exploitation in the wild and added it to the Known Exploited Vulnerabilities catalogue on 20 Apr 2026.
  • Rated High severity (CVSS 7.2, scored by Vendor).
  • It has been in the catalogue for 200 days. Systems still unpatched now have almost certainly been scanned for it.
The Vulnerability

What It Is

An authenticated remote code execution in Kentico Xperience allows authenticated users Staging Sync Server to upload arbitrary data to path relative locations. This results in path traversal and arbitrary file upload, including content that can be executed server side leading to remote code execution.This issue affects Kentico Xperience through 13.0.178.

Affected Versions

ProductVersions
Kentico Xperience13.0.178 and earlier

From the public CVE record, as supplied by the vendor. Always confirm against the vendor advisory.

From Watch to Action

What To Do Now

  1. 1

    Find it

    Search your asset inventory and external attack surface for Kentico Xperience. Include cloud images, appliances and anything a supplier runs for you.

    Attack Surface Management
  2. 2

    Fix it

    Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

    Vulnerability Management
  3. 3

    Hunt for compromise

    If an affected system was reachable before you patched, assume it may have been hit. Check logs, new accounts, web shells and outbound connections from the date of exposure.

    Incident Response
  4. 4

    Prove it is fixed

    Rescan or test the system after patching. Upgrades that fail silently and forgotten secondary instances are common.

    Penetration Testing

Vendor Advisories

Regulation

The Compliance Clock

Cyber EssentialsRated high, so if it affects devices in your Cyber Essentials scope, the update must be installed within 14 days of the vendor releasing it.NIS2If exploitation causes a significant incident, essential and important entities owe their CSIRT an early warning within 24 hours and a notification within 72 hours.DORAFinancial entities must classify ICT incidents and send an initial notification for a major incident within strict deadlines, with exploited flaws a common cause.US federal (BOD 22-01)Federal civilian agencies had until 4 May 2026 to remediate. A sensible benchmark for everyone else.

General guidance, not legal advice. Your obligations depend on your sector, scope and jurisdiction.

Stay Ahead

More Exploited Kentico Flaws

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CVE-2025-2746Kentico Xperience CMS Authentication Bypass Using an Alternate Path or Channel VulnerabilityAdded 20 Oct 2025CVE-2025-2747Kentico Xperience CMS Authentication Bypass Using an Alternate Path or Channel VulnerabilityAdded 20 Oct 2025CVE-2019-10068Kentico Xperience Deserialization of Untrusted Data VulnerabilityAdded 25 Mar 2022

All 4 exploited Kentico vulnerabilities

Not Sure If You Are Exposed?

Our attack surface and vulnerability teams can check your internet-facing estate for CVE-2025-2749 and every other exploited flaw on the list.

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Evidence

Sources

  1. CISA Known Exploited Vulnerabilities catalogue
  2. NVD: CVE-2025-2749
  3. CVE record: CVE-2025-2749
  4. FIRST EPSS
  5. devnet.kentico.com/download/hotfixes
  6. labs.watchtowr.com/bypassing-authentication-like-its-the-90s-pre-auth-rce-chain-s-in-kentico-xperien
  7. vulncheck.com/advisories/kentico-xperience-staging-media-file-upload-authenticated-rce