CVE-2025-34511 in the critical feed json
Sitecore PowerShell Extension RCE via Unrestricted Upload
published 2025-06-17 16 mo ago modified 2026-11-03 5 d ago also EUVD-2025-18568
- cvss
- 8.8
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 30.4%
- EPSS 30.4% chance of exploitation in 30 days, percentile 98%
- public exploits
- 1
- Metasploit
Summary
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.
Patch / fix
- sitecore experience_platform 10.4
Timeline
- First public exploit (Metasploit exploit/windows/http/sitecore_xp_cve_2025_34511)
- Published
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- no
- Technical impact
- total
- Assessed
- 16 mo ago
Exploit prediction
30.45% chance of exploitation in the next 30 days, higher than 98% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- Metasploit exploit/windows/http/sitecore_xp_cve_2025_34511 Sitecore XP CVE-2025-34511 Post-Authentication File Upload metasploit exploit, excellent rank, 2025-06-17
- labs.watchtowr.com https://labs.watchtowr.com/is-b-for-backdoor-pre-auth-rce-chain-in-sitecore-experience-platform/ referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Affected products
- Sitecore Powershell Extension
Classification
- Weakness
-
- CWE-434 Unrestricted Upload of File with Dangerous Type
References
-
labs.watchtowr.com
/is-b-for-backdoor-pre-auth-rce-chain-in-sitecore-experience-platform/
third-party-advisory, exploit, technical-description
-
support.sitecore.com
/kb?id=kb_article_view&sysparm_article=KB1003667
vendor-advisory
Sources
- CVE List CVE-2025-34511
- NVD CVE-2025-34511
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.