CVE-2026-55145

MEDIUM
MEDIUM Priority: 0.03 BB Relevance: 53/100
Published: 2026-07-14 Modified: 2026-10-28 First seen: 2026-10-29 Status: active

Attack Surface

Network Low Complexity Conf. Impact

CVSS Vector Breakdown

AV: Network
AC: Low
PR: Low
UI: Required
S: Unchanged
C: High
I: Low
A: None

Description

Improper neutralization of special elements used in a command ('command injection') in Outlook Copilot allows an authorized attacker to perform tampering over a network.

Affected Software (2)

VendorProductVersion
Microsoft Microsoft Copilot -
microsoft copilot -

References & Advisories (1)

Bug Bounty Relevance

53 / 100
✓ Network accessible
✓ Low complexity

CVSS Score

6.3 / 10.0 v3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:N/E:P/RL:O/RC:C

EPSS — Exploitation Probability

0.53%
Raw Score 0.005250
Percentile 44.4%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00525
2026-10-28
0.00525

Intelligence Sources

mitre ref →
nvd ref →