Vulnerability · Published Jul 14, 2026 · Assigned by microsoft
CVE-2026-58617M365 Copilot for iOS Elevation of Privilege Vulnerability
High 8.1
In plain English
A high-severity improper access control in Microsoft 365 Copilot for iOS from Microsoft. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.8% (higher than 56% of all known vulnerabilities).
Severity (CVSS 3.1)8.1High
Exploit odds (30 days)0.8%top 43.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Improper access control in Microsoft 365 Copilot for iOS allows an unauthorized attacker to elevate privileges over a network.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Microsoft 365 Copilot for iOS | 1.0 – before 2.111.4 |
Weakness: CWE-284 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C
References
- M365 Copilot for iOS Elevation of Privilege Vulnerability vendor-advisory, patch