Dashboard / CVE-2026-26129

CVE-2026-26129

HIGH
MEDIUM Priority: 0.09 BB Relevance: 75/100
Published: 2026-05-07 Modified: 2026-10-26 First seen: 2026-10-29 Status: active

Attack Surface

Network Low Complexity No Auth No Interaction Conf. Impact

CVSS Vector Breakdown

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

Description

Improper neutralization of special elements used in a command ('command injection') in M365 Copilot allows an unauthorized attacker to disclose information over a network.

Weakness Classification (1)

Affected Software (1)

VendorProductVersion
microsoft 365_copilot_chat -

References & Advisories (1)

Bug Bounty Relevance

75 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity
✓ No user interaction

CVSS Score

7.5 / 10.0 v3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS — Exploitation Probability

1.14%
Raw Score 0.011350
Percentile 66.4%
Date 2026-10-29

EPSS Trend

2026-10-29
0.01135
2026-10-28
0.01135

Intelligence Sources

nvd ref →

External Links