# CVE-2026-70052: Windows PowerShell integer overflow in local execution

Source: https://junglewise.ai/threats/cve-2026-70052-integer-overflow-or-wraparound-in-windows-powershell-allows-an  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-13. Updated: 2026-10-28  
License: CC BY 4.0 with a link back

CVE-2026-70052 · Severity: high · CVSS 7.8 · Published 2026-10-13

An integer overflow vulnerability in Windows PowerShell allows an authorized local user to execute arbitrary code with elevated privileges. An attacker with legitimate access to a Windows system could exploit this flaw to run malicious commands and compromise system security or steal sensitive data.

Technologies: [Microsoft Windows PowerShell](https://junglewise.ai/threats/technologies/windows-powershell), [Microsoft Windows 11 23h2](https://junglewise.ai/threats/technologies/windows-11-23h2), [Microsoft Windows 11 24h2](https://junglewise.ai/threats/technologies/windows-11-24h2), [Microsoft Windows 11 25h2](https://junglewise.ai/threats/technologies/windows-11-25h2), [Microsoft Windows 11 26h1](https://junglewise.ai/threats/technologies/windows-11-26h1), [Microsoft Windows 11 26h2](https://junglewise.ai/threats/technologies/windows-11-26h2), [Microsoft Windows Server 2022](https://junglewise.ai/threats/technologies/windows-server-2022), [Microsoft Windows Server 2025](https://junglewise.ai/threats/technologies/windows-server-2025). Vendors: [Microsoft](https://junglewise.ai/threats/vendors/microsoft).

## Quick answers

**Is CVE-2026-70052 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-70052 being exploited in the wild.

**How severe is CVE-2026-70052?** High severity, with a CVSS score of 7.8, published 13 October 2026.

**Which products and versions are affected?** Microsoft Windows PowerShell.

**Is there a fix for CVE-2026-70052?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-70052 attacked?** It is attacked with local access.

**Am I affected by CVE-2026-70052?** Check whether you run Microsoft Windows PowerShell, Microsoft Windows 11 23h2, Microsoft Windows 11 24h2 or one of the others listed. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

An integer overflow or wraparound condition in Windows PowerShell permits local code execution when triggered by an authenticated user. The vulnerability requires prior local access to the system; exploitation results in arbitrary code execution at the privilege level of the PowerShell process.

## Affected products

- Microsoft Windows PowerShell

## Timeline

- 2026-10-13: disclosed

## References

- [https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70052](https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70052)

## Related threats

- [Microsoft Windows PowerShell privilege escalation in execution](https://junglewise.ai/threats/cve-2026-124226-execution-with-unnecessary-privileges-in-windows-powershell)
- [Windows PowerShell code injection vulnerability](https://junglewise.ai/threats/cve-2026-124225-improper-control-of-generation-of-code-code-injection-in-windows)
- [Microsoft Windows PowerShell privilege escalation via symlink following](https://junglewise.ai/threats/cve-2026-124224-improper-link-resolution-before-file-access-link-following-in)
- [Windows PowerShell code injection security feature bypass](https://junglewise.ai/threats/cve-2026-113815-improper-control-of-generation-of-code-code-injection-in-windows)
- [Windows DNS Server out-of-bounds read](https://junglewise.ai/threats/cve-2026-97844-out-of-bounds-read-in-dns-server-allows-an-authorized-attacker-to)