PT-2025-25751 · Sitecore · Sitecore Powershell Extensions

Piotr Bazydlo · Published 2025-06-17 · Updated 2025-09-15 · CVE-2025-34511

Positive Technologies (AI Summary)

CVSS v2.0

9.0

High

Base vector

AV:N/AC:L/Au:S/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions Sitecore PowerShell Extensions versions prior to 7.0

Description The issue allows a remote, authenticated attacker to upload arbitrary files to the server using crafted HTTP requests, resulting in remote code execution. This is due to an unrestricted file upload problem.

Recommendations For versions prior to 7.0, consider disabling the file upload functionality until a patch is available. Restrict access to the server to minimize the risk of exploitation. Avoid using crafted HTTP requests to upload files to the server until the issue is resolved. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

RCE

Unrestricted File Upload

Weakness Enumeration

CWE-434

Related Identifiers

BDU:2026-00820

CVE-2025-34511

Affected Products

Sitecore Powershell Extensions

References · 13

• 🔥 https://labs.watchtowr.com/is-b-for-backdoor-pre-auth-rce-chain-in-sitecore-experience-platform · Exploit
• https://bdu.fstec.ru/vul/2026-00820 · Security Note
• https://osv.dev/vulnerability/CVE-2025-34511 · Vendor Advisory
• https://support.sitecore.com/kb?id=kb_article_view&sysparm_article=KB1003667 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-34511 · Security Note
• https://twitter.com/r1cksec/status/1935955616620556567 · Twitter Post
• https://t.me/CSIRT_italia/2724 · Telegram Post
• https://twitter.com/CVEnew/status/1935056859854991452 · Twitter Post
• https://t.me/cvenotify/129816 · Telegram Post
• https://t.me/cveNotify/129816 · Telegram Post
• https://kaspersky.ru/blog/vulnerabilities-sitecore-experience-platform/39950 · Note
• https://t.me/purp_sec/785 · Telegram Post
• https://t.me/cvetracker/26440 · Telegram Post