CVE-2025-26498: Unrestricted Upload of File with Dangerous Type vulnerability in Salesforce Tableau Server on Windows, Linux (

This month

HIGH 7.3REMOTEWATCHLISTUPGRADE

CVE-2025-26498 is a high-severity flaw (CVSS 7.3) affecting tableau server. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Unrestricted Upload of File with Dangerous Type vulnerability in Salesforce Tableau Server on Windows, Linux (establish-connection-no-undo modules) allows Absolute Path Traversal.This issue affects Tableau Server: before 2025.1.3, before 2024.2.12, before 2023.3.19.

Why this priority

High severity
Remotely exploitable, no login, no user action
On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	7.3 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.3% (top 79%)
CISA exploited list	No
Weakness	CWE-434
Published	2025-08-22
Last modified	2026-06-17

Publisher (CNA): Salesforce, Inc. · Vendor: tableau

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-08-22 21:15 UTCPublished CVE record published
2026-06-17 09:01 UTCUpdated Record last modified

tableau tableau server UPGRADE

Affected: < 2023.3.19 · >= 2024.2 and < 2024.2.12 · >= 2025.1 and < 2025.1.3

Fixed in: 2023.3.19, 2024.2.12, 2025.1.3

Safe to downgrade to: a release before 2024.2

1. Check installed version

apt-cache policy tableau-server || rpm -q tableau-server || tableau-server --version

2. UPGRADE to 2023.3.19 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade tableau-server

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade tableau-server

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 2024.2 (Debian / Ubuntu)

apt-cache madison tableau-server sudo apt install tableau-server=<VERSION_BEFORE_2024.2> sudo apt-mark hold tableau-server

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list tableau-server sudo dnf downgrade tableau-server-<VERSION_BEFORE_2024.2> sudo dnf versionlock add tableau-server

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

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-2025-26498?

tableau server: upgrade to 2023.3.19, 2024.2.12, 2025.1.3. Exact commands for each OS are on this page.

Is CVE-2025-26498 being exploited?

CVE-2025-26498 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-2025-26498 affect?

CVE-2025-26498 affects tableau server. Severity is high (CVSS 7.3). Unrestricted Upload of File with Dangerous Type vulnerability in Salesforce Tableau Server on Windows, Linux (establish-connection-no-undo modules) allows Absolute Path Traversal.This issue affects Tableau Server: before 2025.1.3, before 20

How urgent is CVE-2025-26498?

Priority 41/100. High severity; Remotely exploitable, no login, no user action; On your watchlist

Software pages

Windows vulnerabilities · Salesforce vulnerabilities

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References

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