# CVE-2026-77897: Microsoft Power Automate relative path traversal privilege escalation

Source: https://junglewise.ai/threats/cve-2026-77897-microsoft-power-automate-relative-path-traversal-privilege  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-08. Updated: 2026-09-26  
License: CC BY 4.0 with a link back

CVE-2026-77897 · Severity: high · CVSS 7 · Published 2026-09-08

Power Automate is Microsoft's cloud-based workflow automation platform used by enterprises to streamline business processes. A path traversal vulnerability allows an authorized user to access files and directories outside intended locations, potentially leading to unauthorized privilege escalation and access to sensitive system data.

Technologies: [Microsoft Power Automate](https://junglewise.ai/threats/technologies/power-automate). Vendors: [Microsoft](https://junglewise.ai/threats/vendors/microsoft).

## Quick answers

**Is CVE-2026-77897 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-77897 being exploited in the wild.

**How severe is CVE-2026-77897?** High severity, with a CVSS score of 7, published 8 September 2026.

**Which products and versions are affected?** Microsoft Power Automate.

**Is there a fix for CVE-2026-77897?** 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-2026-77897 attacked?** It is attacked with local access.

**Am I affected by CVE-2026-77897?** Check whether you run Microsoft Power Automate. 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

The vulnerability is a relative path traversal flaw in Power Automate that permits an authenticated attacker to manipulate file paths using directory traversal sequences (e.g., ../) to access restricted resources and escalate privileges locally. The attack requires valid credentials and local access to the system. Successful exploitation could allow an attacker to read or modify sensitive files, escalate from a standard user to administrative privileges, or execute arbitrary code. Microsoft has released security patches to address this issue.

## Affected products

- Microsoft Power Automate

## Timeline

- 2026-09-08: disclosed

## References

- [https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-77897](https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-77897)

## Related threats

- [Microsoft Power Automate server-side request forgery privilege escalation](https://junglewise.ai/threats/cve-2026-65818-microsoft-power-automate-server-side-request-forgery-privilege)
- [Microsoft Power Automate Information Disclosure](https://junglewise.ai/threats/cve-2026-40374-microsoft-power-automate-information-disclosure)