Microsoft Power Apps: Remote code execution due to origin validation error
Summary
Microsoft Power Apps contains an origin validation error (CWE-346) that allows an authorized attacker to execute code over the network. According to the CVSS vector, an attacker needs low privileges and user interaction, such as opening a malicious link, and the impact on confidentiality, integrity and availability is high. The NVD record is still awaiting analysis, and the affected versions conflict between sources.
Affected
- Power Apps for Android: 1.0.0 to before 3.26085.7 (per CNA record)
- Power Apps cloud service: Unknown. Sources conflict on the affected range.
Fixed in
- Power Apps for Android: 3.26085.7 (per CNA record; one secondary source is unverified)
- Power Apps cloud service: Unknown. Microsoft fixes the service centrally.
Workaround
- No workaround documented in the sources reviewed.
Exploitation
- No known exploitation. CISA SSVC lists exploitation as none and automatable as no.
- No public proof of concept known.
- Not listed in CISA KEV (per Strix).
- Rapid7 rates exploitation as less likely.
Our recommendation
- Update Power Apps for Android on mobile devices to build 3.26085.7 or later, after verifying the fix against the MSRC advisory.
- Check the Power Apps cloud service in your Microsoft 365 tenant for updates in the MSRC advisory.
- Restrict Power Apps licensing and use to the cases where it is needed.
- Train users not to open unknown links and monitor for suspicious Power Apps activity.
- Priority: medium for most SMEs.
Information from Microsoft (Patch Tuesday October 2026)
Public exploits
PoC-in-GitHub, Metasploit and Exploit-DB list nothing for this CVE.
Research sources
- Microsoft Security Response Center: CVE-2026-70213 msrc.microsoft.com
- SentinelOne vulnerability database: CVE-2026-70213 www.sentinelone.com
- Strix: CVE-2026-70213 www.strix.ai
- OpenCVE: CVE-2026-70213 app.opencve.io
- Vulners CVE list: CVE-2026-70213 (CNA data) vulners.com
- Rapid7: Patch Tuesday October 2026 www.rapid7.com
- AhnLab ASEC: CVE-2026-70213 asec.ahnlab.com
Researched and written up in English and German by an AI (Claude by Anthropic) based on NVD, CISA, EPSS and the sources listed. The vendor information is authoritative. Researched on 1 Nov 2026, 21:24.
Original description (NVD)
Origin validation error in Microsoft Power Apps allows an authorized attacker to execute code over a network.
NVD references (1)
Sources
The tracker combines official, freely usable data sources – updated continuously:
- NVD (NIST) – CVEs, rating (CVSS), affected products
- CISA KEV – vulnerabilities confirmed by CISA as actively exploited
- CISA Vulnrichment – CISA assessment (SSVC) in the official CVE record
- FIRST EPSS – probability of exploitation
- Microsoft MSRC – Patch Tuesday: vulnerabilities, severity, updates
- PoC-in-GitHub – public proof-of-concept repositories
- Metasploit (Rapid7) – modules of the Metasploit Framework
- Exploit-DB (OffSec) – archive of public exploits (links only)
- Patch days: official vendor pages (linked per vendor) (Vendor patch days)
This product uses data from the NVD API but is not endorsed or certified by the NVD. EPSS data © FIRST.org.
Affected? We can help.
We check whether your systems are affected, install updates and close the gap – continuously with the System Health Checker if you wish.