CVE-2022-21846
published 2022-01-11CVE-2022-21846: Microsoft Exchange Server Remote Code Execution Vulnerability
PriorityP350critical9CVSS 3.1
AVAACLPRLUINSCCHIHAH
EPSS
1.06%
60.8th percentile
Microsoft Exchange Server Remote Code Execution Vulnerability
Affected
13 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| microsoft | exchange_server | — | — |
| microsoft | exchange_server | — | — |
| microsoft | exchange_server | — | — |
| microsoft | microsoft_exchange_server_2013_cumulative_update_23 | >= 15.00.0 < 15.00.1497.028 | 15.00.1497.028 |
| microsoft | microsoft_exchange_server_2016_cumulative_update_21 | >= 15.01.0 < 15.01.2308.021 | 15.01.2308.021 |
| microsoft | microsoft_exchange_server_2016_cumulative_update_22 | >= 15.0.0 < 15.01.2375.018 | 15.01.2375.018 |
| microsoft | microsoft_exchange_server_2019_cumulative_update_10 | >= 15.02.0 < 15.02.0922.020 | 15.02.0922.020 |
| microsoft | microsoft_exchange_server_2019_cumulative_update_11 | >= 15.02.0 < 15.02.0986.015 | 15.02.0986.015 |
| msrc | microsoft_exchange_server_2013_cumulative_update_23 | — | — |
| msrc | microsoft_exchange_server_2016_cumulative_update_21 | — | — |
| msrc | microsoft_exchange_server_2016_cumulative_update_22 | — | — |
| msrc | microsoft_exchange_server_2019_cumulative_update_10 | — | — |
| msrc | microsoft_exchange_server_2019_cumulative_update_11 | — | — |
CVSS provenance
nvdv3.19.0CRITICALCVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
nvdv2.08.3HIGHAV:A/AC:L/Au:N/C:C/I:C/A:C
vendor_msrc9.0CRITICAL
Stop checking back — get the weekly exploitation signal.
Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.
Microsoft
Microsoft Exchange Server Remote Code Execution Vulnerability
vendor_msrc·2022-01-11·CVSS 9.0
CVE-2022-21846 [CRITICAL] Microsoft Exchange Server Remote Code Execution Vulnerability
Microsoft Exchange Server Remote Code Execution Vulnerability
FAQ: According to the CVSS metric, the attack vector is adjacent (AV:A). What does that mean for this vulnerability?
This vulnerability's attack is limited at the protocol level to a logically adjacent topology. This means it cannot simply be done across the internet, but instead needs something specific tied to the target. Good examples would include the same shared physical network (such as Bluetooth or IEEE 802.11), logical network (local IP subnet), or from within a secure or otherwise limited administrative domain (MPLS, secure VPN to an administrative network zone). This is common to many attacks that require machine-in-the-middle (MITM) type setups or that rely on initially gaining a foothold in another environment.
Mic
GHSA
GHSA-gw92-cf78-427q: Microsoft Exchange Server Remote Code Execution Vulnerability
ghsa_unreviewed·2022-01-12·CVSS 9.0
CVE-2022-21846 [CRITICAL] CWE-94 GHSA-gw92-cf78-427q: Microsoft Exchange Server Remote Code Execution Vulnerability
Microsoft Exchange Server Remote Code Execution Vulnerability. This CVE ID is unique from CVE-2022-21855, CVE-2022-21969.
GHSA
GHSA-m86g-hcfp-6vv3: Microsoft Exchange Server Remote Code Execution Vulnerability
ghsa_unreviewed·2022-01-12·CVSS 9.0
CVE-2022-21855 [CRITICAL] GHSA-m86g-hcfp-6vv3: Microsoft Exchange Server Remote Code Execution Vulnerability
Microsoft Exchange Server Remote Code Execution Vulnerability. This CVE ID is unique from CVE-2022-21846, CVE-2022-21969.
GHSA
GHSA-q9fp-h9j7-378r: Microsoft Exchange Server Remote Code Execution Vulnerability
ghsa_unreviewed·2022-01-12·CVSS 9.0
CVE-2022-21969 [CRITICAL] GHSA-q9fp-h9j7-378r: Microsoft Exchange Server Remote Code Execution Vulnerability
Microsoft Exchange Server Remote Code Execution Vulnerability. This CVE ID is unique from CVE-2022-21846, CVE-2022-21855.
No detection rules found.
No public exploits indexed.
Talos
Microsoft Patch Tuesday for Jan. 2022 — Snort rules and prominent vulnerabilities
blogs_talos·2022-01-11·CVSS 8.3
CVE-2022-21840 [HIGH] Microsoft Patch Tuesday for Jan. 2022 — Snort rules and prominent vulnerabilities
Microsoft released its monthly security update Tuesday, disclosing 102 vulnerabilities across its large collection of hardware and software. This is the largest amount of vulnerabilities Microsoft has disclosed in a monthly security update in eight months, however, none of the issues have been exploited in the wild, according to Microsoft.
2022’s first security update features nine critical vulnerabilities, with all but one of the remaining being considered “important.” CVE-2022-21840 is one of the critical vulnerabilities, an issue in Microsoft Office that could allow an attacker to execute remote code on the targeted machine. CVE-2022-21841, CVE-2022-21837 and CVE-2022-21842 are also remote code execution vulnerabilities in the Office suite of products, though they are only rated as “im
Krebs
‘Wormable’ Flaw Leads January 2022 Patch Tuesday
blogs_krebs·2022-01-11·CVSS 9.8
[CRITICAL] ‘Wormable’ Flaw Leads January 2022 Patch Tuesday
Microsoft today released updates to plug nearly 120 security holes in Windows and supported software. Six of the vulnerabilities were publicly detailed already, potentially giving attackers a head start in figuring out how to exploit them in unpatched systems. More concerning, Microsoft warns that one of the flaws fixed this month is “wormable,” meaning no human interaction would be required for an attack to spread from one vulnerable Windows box to another.
Nine of the vulnerabilities fixed in this month’s Patch Tuesday received Microsoft’s “critical” rating, meaning malware or miscreants can exploit them to gain remote access to vulnerable Windows systems through no help from the user.
By all accounts, the most severe flaw addressed today is CVE-2022-21907, a critical, remote code exec
Krebs
‘Wormable’ Flaw Leads January 2022 Patch Tuesday
blogs_krebs·2022-01-11·CVSS 9.8
[CRITICAL] ‘Wormable’ Flaw Leads January 2022 Patch Tuesday
Microsoft today released updates to plug nearly 120 security holes in Windows and supported software. Six of the vulnerabilities were publicly detailed already, potentially giving attackers a head start in figuring out how to exploit them in unpatched systems. More concerning, Microsoft warns that one of the flaws fixed this month is “wormable,” meaning no human interaction would be required for an attack to spread from one vulnerable Windows box to another.
Nine of the vulnerabilities fixed in this month’s Patch Tuesday received Microsoft’s “critical” rating, meaning malware or miscreants can exploit them to gain remote access to vulnerable Windows systems through no help from the user.
By all accounts, the most severe flaw addressed today is CVE-2022-21907, a critical, remote code exec
Tenable
Microsoft’s January 2022 Patch Tuesday Addresses 97 CVEs (CVE-2022-21907)
blogs_tenable·2022-01-11·CVSS 9.8
[CRITICAL] Microsoft’s January 2022 Patch Tuesday Addresses 97 CVEs (CVE-2022-21907)
## Cloud Exposure
Tenable Cloud Security (CNAPP) Request a demo
Tenable Cloud Vulnerability Management Request a demo
Tenable CIEM Request a demo
Secure your cloud
## Vulnerability Exposure
Tenable Vulnerability Management Try for free
Tenable Security Center Request a demo
Tenable Web App Scanning Try for free
Tenable Patch Management Request a demo
Tenable Enclave Security Request a demo
Tenable Attack Surface Management Request a demo
Tenable Nessus Try for free
## AI Exposure
Tenable AI Exposure Request a demo
## OT/IoT Exposure
Tenable OT Security Request a demo
## Identity Exposure
Tenable Identity Exposure Request a demo
## Business needs
Active Directory
AI Security Posture Management (AI-SPM)
AWS security
Azure security
Cloud Security Posture Man
Qualys
Microsoft & Adobe Patch Tuesday (January 2022) – Microsoft 126 Vulnerabilities with 9 Critical, Adobe 41 Vulnerabilities, 22 critical
blogs_qualys·2022-01-11·CVSS 9.0
[CRITICAL] Microsoft & Adobe Patch Tuesday (January 2022) – Microsoft 126 Vulnerabilities with 9 Critical, Adobe 41 Vulnerabilities, 22 critical
## Table of Contents
Microsoft Patch Tuesday January 2022
Adobe Patch Tuesday January 2022
Discover and Prioritize Patch Tuesday Vulnerabilities in VMDR
Respond by Patching
Patch Tuesday Dashboard
Webinar Series: This Month in Vulnerabilities and Patches
About Patch Tuesday
Contributor
## Microsoft Patch Tuesday – January 2022
Microsoft patched 126 vulnerabilities in their January 2022 Patch Tuesday release. Out of these, nine are rated as critical severity. As of this writing, none of the 126 vulnerabilities are known to be actively exploited.
Microsoft has fixed problems in their software including Remote Code Execution (RCE) vulnerabilities, privilege escalation security flaws, spoofing bugs, and Denial of Service (DoS) issues.
## Critical Microsoft Vulnerabilities Patched
Talos
Microsoft Patch Tuesday for Jan. 2022 — Snort rules and prominent vulnerabilities
blogs_talos·2022-01-11·CVSS 8.3
[HIGH] Microsoft Patch Tuesday for Jan. 2022 — Snort rules and prominent vulnerabilities
## Microsoft Patch Tuesday for Jan. 2022 — Snort rules and prominent vulnerabilities
Microsoft released its monthly security update Tuesday, disclosing 102 vulnerabilities across its large collection of hardware and software. This is the largest amount of vulnerabilities Microsoft has disclosed in a monthly security update in eight months, however, none of the issues have been exploited in the wild, according to Microsoft.
2022’s first security update features nine critical vulnerabilities, with all but one of the remaining being considered “important.” CVE-2022-21840 is one of the critical vulnerabilities, an issue in Microsoft Office that could allow an attacker to execute remote code on the targeted machine. CVE-2022-21841 , CVE-2022-21837 and CVE-2022-21842 are also remote code execu
Qualys
Microsoft & Adobe Patch Tuesday (January 2022) – Microsoft 126 Vulnerabilities with 9 Critical, Adobe 41 Vulnerabilities, 22 critical | Qualys
blogs_qualys·2022-01-11·CVSS 9.0
[CRITICAL] Microsoft & Adobe Patch Tuesday (January 2022) – Microsoft 126 Vulnerabilities with 9 Critical, Adobe 41 Vulnerabilities, 22 critical | Qualys
#### Table of Contents
- Microsoft Patch Tuesday January 2022
- Adobe Patch Tuesday January 2022
- Discover and Prioritize Patch Tuesday Vulnerabilities in VMDR
- Respond by Patching
- Patch Tuesday Dashboard
- Webinar Series: This Month in Vulnerabilities and Patches
- About Patch Tuesday
- Contributor
## Microsoft Patch Tuesday – January 2022
Microsoft patched 126 vulnerabilities in their January 2022 Patch Tuesday release. Out of these, nine are rated as critical severity. As of this writing, none of the 126 vulnerabilities are known to be actively exploited.
Microsoft has fixed problems in their software including Remote Code Execution (RCE) vulnerabilities, privilege escalation security flaws, spoofing bugs, and Denial of Service (DoS) issues.
### Critical Microsoft Vulnerabiliti
Crowdstrike
January 2022 Patch Tuesday: Updates and Analysis
blogs_crowdstrike·CVSS 7.5
CVE-2026-20929 [HIGH] January 2022 Patch Tuesday: Updates and Analysis
STARDUST CHOLLIMA Likely Compromises Axios npm Package Apr 01, 2026
Falcon for IT Supports Windows Secure Boot Certificate Lifecycle Management Apr 01, 2026
Detecting CVE-2026-20929: Kerberos Authentication Relay via CNAME Abuse Mar 31, 2026
How Charlotte AI AgentWorks Fuels Security's Agentic Ecosystem Mar 25, 2026
STARDUST CHOLLIMA Likely Compromises Axios npm Package Apr 01, 2026
Falcon for IT Supports Windows Secure Boot Certificate Lifecycle Management Apr 01, 2026
Detecting CVE-2026-20929: Kerberos Authentication Relay via CNAME Abuse Mar 31, 2026
How Charlotte AI AgentWorks Fuels Security's Agentic Ecosystem Mar 25, 2026
Video Highlights the 4 Key Steps to Successful Incident Response Dec 02, 2019
Helping Non-Security Stakeholders Understand ATT&CK in 10 Minutes or Less [VI
2022-01-11
Published