CVE-2025-34511

Name: CVE-2025-34511
Creator: NVD / NIST
Published: 2025-06-17T19:15:31.683+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 8.50%

Last modified Jun 17, 2026

CVE-2025-34511 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. Sitecore PowerShell Extensions, an add-on to Sitecore Experience Manager (XM) and Experience Platform (XP), through version 7.0 is vulnerable to an unrestricted file upload issue. A remote, authenticated attacker can upload arbitrary files to the server using crafted HTTP requests, resulting in remote code execution.. EPSS estimates a 8.50% chance of exploitation in the next 30 days.

Description

Sitecore PowerShell Extensions, an add-on to Sitecore Experience Manager (XM) and Experience Platform (XP), through version 7.0 is vulnerable to an unrestricted file upload issue. A remote, authenticated attacker can upload arbitrary files to the server using crafted HTTP requests, resulting in remote code execution.

Metrics

CVSS 3.1

8.8/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

8.50%

94.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-434

Affected Software

Vendor	Product	Versions
Sitecore	Experience Commerce	>= 9.0, <= 10.4
Sitecore	Experience Manager	>= 9.0, <= 10.4
Sitecore	Experience Platform	>= 9.0, < 10.4
Sitecore	Experience Platform	10.4
Sitecore	Managed Cloud	All versions

References

https://labs.watchtowr.com/is-b-for-backdoor-pre-auth-rce-chain-in-sitecore-experience-platform/Exploit, Third Party Advisory
https://support.sitecore.com/kb?id=kb_article_view&sysparm_article=KB1003667Vendor Advisory

Timeline

Published: Jun 17, 2025
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2025-34511?

How severe is CVE-2025-34511?

CVE-2025-34511 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 8.50% probability of exploitation in the next 30 days.

How do I fix CVE-2025-34511?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-34511?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST