CVE-2021-42292

ENISA EUVD: EUVD-2021-29267 ↗
Exploited in the Wild ✓ Confirmed 0-Day ★ Google Project Zero
Triaged: March 5, 2026 3 articles Published: 2021-11-10

EPSS Score

Source: FIRST.org · 2026-05-23
35.49%
probability
This CVE has a 35.49% probability of being exploited in the next 30 days.
0% Top 97.1th percentile of all CVEs 100%

CVSS v3.1

Source: VulnerabilityLookup (CIRCL)
7.8
HIGH
Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Temporal
Exploit Code Maturity
Proof-of-Concept
Remediation Level
Official Fix
Report Confidence
Confirmed
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C

CVSS v2 (legacy)

6.8
MEDIUM
Access Vector
Network
Access Complexity
Medium
Authentication
None
Confidentiality
Partial
Integrity
Partial
Availability
Partial
AV:N/AC:M/Au:N/C:P/I:P/A:P

Description

NVD
Microsoft Excel Security Feature Bypass Vulnerability

Affected Products

Microsoft
Microsoft Office 2019
19.0.0
Microsoft
Microsoft Office 2019 for Mac
16.0.0
Microsoft
Microsoft 365 Apps for Enterprise
16.0.1
Microsoft
Microsoft Office LTSC for Mac 2021
16.0.1
Microsoft
Microsoft Office LTSC 2021
16.0.1

Google Project Zero

Patched
Nov. 9, 2021
Reported by
Microsoft Threat Intelligence Center (MSTIC)
Root Cause Analysis
???

Exploits & PoC

corelight/CVE-2021-42292

A Zeek package to detect CVE-2021-42292, a Microsoft Excel local privilege escalation exploit.

18 2021-11-11
1 repo — triés par ⭐ Rechercher sur GitHub ↗

Signal Intelligence

Confidence
95%
EPSS 35.49%
CVSS v3.1 7.8
Mentions 3
Last Seen Nov 11, 2021

CNA Information

CNA Assigner
microsoft
CNA Title
Microsoft Excel Security Feature Bypass Vulnerability

Analyst Note

Auto-imported from Google Project Zero — confirmed zero-day by definition.

Threat Actors 2

APT 29
apt_group Information theft and espionage 🇷🇺 RU
Kimsuky
apt_group Information theft and espionage 🇰🇷 KR

Triage Info

Decided atMar 05, 2026
Published DateNov 10, 2021