CVE-2021-31985
published 2021-06-08CVE-2021-31985: Microsoft Defender Remote Code Execution Vulnerability
PriorityP356high8.8CVSS 3.1
AVNACLPRNUIRSUCHIHAH
EPSS
7.76%
94.0th percentile
Microsoft Defender Remote Code Execution Vulnerability
Affected
3 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| microsoft | malware_protection_engine | < 1.1.18200.3 | 1.1.18200.3 |
| microsoft | microsoft_malware_protection_engine | >= 1.1.0.0 < Version 1.1.18200.3 | Version 1.1.18200.3 |
| msrc | microsoft_malware_protection_engine | — | — |
CVSS provenance
nvdv3.18.8HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
nvdv2.06.8MEDIUMAV:N/AC:M/Au:N/C:P/I:P/A:P
vendor_msrc7.8HIGH
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Microsoft
Microsoft Defender Remote Code Execution Vulnerability
vendor_msrc·2021-06-08·CVSS 7.8
CVE-2021-31985 [HIGH] Microsoft Defender Remote Code Execution Vulnerability
Microsoft Defender Remote Code Execution Vulnerability
FAQ:
References
Identification
First version of the Microsoft Malware Protection Engine with this vulnerability addressed
Version 1.1.18200.3
See Manage Updates Baselines Microsoft Defender Antivirus for more information.
Microsoft Defender is disabled in my environment, why are vulnerability scanners showing that I am vulnerable to this issue?
Vulnerability scanners are looking for specific binaries and version numbers on devices. Microsoft Defender files are still on disk even when disabled. Systems that have disabled Microsoft Defender are not in an exploitable state.
Why is no action required to install this update?
In response to a constantly changing threat landscape, Microsoft frequently updates malware definitions and th
GHSA
GHSA-jjcr-9wm8-qgr3: Microsoft Defender Remote Code Execution Vulnerability
ghsa_unreviewed·2022-05-24
CVE-2021-31985 [HIGH] GHSA-jjcr-9wm8-qgr3: Microsoft Defender Remote Code Execution Vulnerability
Microsoft Defender Remote Code Execution Vulnerability
No detection rules found.
No public exploits indexed.
Wiz
5 reasons endpoint security agents are not enough | Wiz Blog
blogs_wiz·2022-02-03
5 reasons endpoint security agents are not enough | Wiz Blog
Agents have always been an inherent part of security and operations, finding a place in vulnerability scanning, threat detection, data loss prevention (DLP), remote management, virtual private networks (VPN), and more. We all know them, we all have them, and as a result, we are all faced with the burden of managing, deploying, and updating countless endpoint agents. In the cloud, this becomes even more complex since IT teams do not necessarily have control over all the deployed workloads, leading to an endless cat-and-mouse game of trying to get developers to deploy the various agents.
In this post, we discuss five security limitations of endpoint security agents: lack of coverage, deployment difficulties, an increased attack surface, susceptible high privileges, and ease of avoidance by
Talos
Threat Source newsletter (June 10, 2021)
blogs_talos·2021-06-10
Threat Source newsletter (June 10, 2021)
## Threat Source newsletter (June 10, 2021)
Good afternoon, Talos readers.
We seriously can't escape from ransomware. It's in the headlines constantly and has now drawn the full attention of the federal government. But we at Talos recognize that is going to take far more than just words to address this global threat. In this opinion piece we published this week along with the Cyber Threat Alliance, we outlined some steps we feel the government and private sector need to take to ensure physical life and property, critical infrastructure and the economy are all protected from ransomware.
While you're on our blog, you should also head over to the new Cisco Talos Incident Response web page . We have updated CTIR's list of offerings and gave it a few visual overhauls that we think you'll lov
Talos
Threat Source newsletter (June 10, 2021)
blogs_talos·2021-06-10
Threat Source newsletter (June 10, 2021)
Good afternoon, Talos readers.
We seriously can't escape from ransomware. It's in the headlines constantly and has now drawn the full attention of the federal government. But we at Talos recognize that is going to take far more than just words to address this global threat. In this opinion piece we published this week along with the Cyber Threat Alliance, we outlined some steps we feel the government and private sector need to take to ensure physical life and property, critical infrastructure and the economy are all protected from ransomware.
While you're on our blog, you should also head over to the new Cisco Talos Incident Response web page. We have updated CTIR's list of offerings and gave it a few visual overhauls that we think you'll love.
Back in the security space, we also had Mi
Trendmicro
June Patch Tuesday: Internet Explorer Finally Laid to Rest
blogs_trendmicro·2021-06-08·CVSS 5.5
[MEDIUM] June Patch Tuesday: Internet Explorer Finally Laid to Rest
Ausnutzung von Schwachstellen
## June Patch Tuesday: Internet Explorer Finally Laid to Rest
The June 2021 Patch Tuesday cycle offers good news to both IT and website administrators.
By: Trend Micro Jun 08, 2021 Read time: ( words)
Save to Folio
The June 2021 Patch Tuesday cycle offers good news to both IT and website administrators. For the former, the number of bulletins issued this month is, at 50, far lower than we’ve become accustomed to in recent months. The latter group, however, has much better news to process this month: Internet Explorer support finally comes to an end.
June Patches: Fifty Bulletins, But Only Five Critical
Of this month’s 50 bulletins, only five were rated by Microsoft as Critical. One of these bulletins covers a vulnerability in Microsoft Defender ( CVE-20
Trendmicro
June Patch Tuesday: Internet Explorer Finally Laid to Rest
blogs_trendmicro·2021-06-08·CVSS 5.5
[MEDIUM] June Patch Tuesday: Internet Explorer Finally Laid to Rest
Exploits & Vulnerabilities
## June Patch Tuesday: Internet Explorer Finally Laid to Rest
The June 2021 Patch Tuesday cycle offers good news to both IT and website administrators.
By: Trend Micro 2021/06/08 Read time: ( words)
Save to Folio
The June 2021 Patch Tuesday cycle offers good news to both IT and website administrators. For the former, the number of bulletins issued this month is, at 50, far lower than we’ve become accustomed to in recent months. The latter group, however, has much better news to process this month: Internet Explorer support finally comes to an end.
June Patches: Fifty Bulletins, But Only Five Critical
Of this month’s 50 bulletins, only five were rated by Microsoft as Critical. One of these bulletins covers a vulnerability in Microsoft Defender ( CVE-2021-31
Qualys
Microsoft & Adobe Patch Tuesday (June 2021) – Microsoft 50 Vulnerabilities with 5 Critical, Adobe 21 Critical Vulnerabilities | Qualys
blogs_qualys·2021-06-08·CVSS 5.2
CVE-2021-31985 [MEDIUM] Microsoft & Adobe Patch Tuesday (June 2021) – Microsoft 50 Vulnerabilities with 5 Critical, Adobe 21 Critical Vulnerabilities | Qualys
### Microsoft Patch Tuesday – June 2021
Microsoft patched 50 CVEs in their June 2021 Patch Tuesday release, and five of them are rated as critical severity. Six have applicable exploits.
#### Critical Microsoft Vulnerabilities Patched
CVE-2021-31985 – Microsoft Defender Remote Code Execution Vulnerability
Microsoft released patches addressing a critical RCE vulnerability in its Defender product (CVE-2021-31985). This CVE has a high likelihood of exploitability and is assigned a CVSSv3 base score of 7.8 by the vendor.
CVE-2021-31959 – Scripting Engine Memory Corruption Vulnerability
Microsoft released patches addressing a critical memory corruption vulnerability in the Chakra JScript scripting engine. This vulnerability impacts Windows RT, Windows 7, Windows 8, Windows 10, Windows Ser
Trendmicro
June Patch Tuesday: Internet Explorer Finally Laid to Rest
blogs_trendmicro·2021-06-08·CVSS 5.5
[MEDIUM] June Patch Tuesday: Internet Explorer Finally Laid to Rest
Sfruttamento vulnerabilità
## June Patch Tuesday: Internet Explorer Finally Laid to Rest
The June 2021 Patch Tuesday cycle offers good news to both IT and website administrators.
By: Trend Micro Jun 08, 2021 Read time: ( words)
Save to Folio
The June 2021 Patch Tuesday cycle offers good news to both IT and website administrators. For the former, the number of bulletins issued this month is, at 50, far lower than we’ve become accustomed to in recent months. The latter group, however, has much better news to process this month: Internet Explorer support finally comes to an end.
June Patches: Fifty Bulletins, But Only Five Critical
Of this month’s 50 bulletins, only five were rated by Microsoft as Critical. One of these bulletins covers a vulnerability in Microsoft Defender ( CVE-2021-
Trendmicro
June Patch Tuesday: Internet Explorer Finally Laid to Rest
blogs_trendmicro·2021-06-08·CVSS 5.5
[MEDIUM] June Patch Tuesday: Internet Explorer Finally Laid to Rest
Exploits y vulnerabilidades
## June Patch Tuesday: Internet Explorer Finally Laid to Rest
The June 2021 Patch Tuesday cycle offers good news to both IT and website administrators.
By: Trend Micro Jun 08, 2021 Read time: ( words)
Save to Folio
The June 2021 Patch Tuesday cycle offers good news to both IT and website administrators. For the former, the number of bulletins issued this month is, at 50, far lower than we’ve become accustomed to in recent months. The latter group, however, has much better news to process this month: Internet Explorer support finally comes to an end.
June Patches: Fifty Bulletins, But Only Five Critical
Of this month’s 50 bulletins, only five were rated by Microsoft as Critical. One of these bulletins covers a vulnerability in Microsoft Defender ( CVE-2021
Talos
Microsoft Patch Tuesday for June 2021 — Snort rules and prominent vulnerabilities
blogs_talos·2021-06-08·CVSS 8.8
[HIGH] Microsoft Patch Tuesday for June 2021 — Snort rules and prominent vulnerabilities
By Jon Munshaw, with contributions from Edmund Brumaghin.
Microsoft released its monthly security update Tuesday, disclosing 51 vulnerabilities across its suite of products, breaking last month’s 16-month record of the fewest vulnerabilities disclosed in a month by the company.
There are only four critical vulnerabilities patched in this month, while all the other ones are considered “important.” However, there are several vulnerabilities that Microsoft states are being actively exploited in the wild.
This month’s security update provides updates for several pieces of software and Windows functions, including SharePoint Server, the Windows kernel and Outlook. For a full rundown of these CVEs, head to Microsoft’s security update page. Two of the vulnerabilities Microsoft disclosed today
Trendmicro
June Patch Tuesday: Internet Explorer Finally Laid to Rest
blogs_trendmicro·2021-06-08·CVSS 5.5
[MEDIUM] June Patch Tuesday: Internet Explorer Finally Laid to Rest
Exploits & Vulnerabilities
# June Patch Tuesday: Internet Explorer Finally Laid to Rest
The June 2021 Patch Tuesday cycle offers good news to both IT and website administrators.
By: Trend Micro
2021/06/08
Read time: ( words)
Save to Folio
The June 2021 Patch Tuesday cycle offers good news to both IT and website administrators. For the former, the number of bulletins issued this month is, at 50, far lower than we’ve become accustomed to in recent months. The latter group, however, has much better news to process this month: Internet Explorer support finally comes to an end.
June Patches: Fifty Bulletins, But Only Five Critical
Of this month’s 50 bulletins, only five were rated by Microsoft as Critical. One of these bulletins covers a vulnerability in Microsoft Defender (CVE-2021-319
Trendmicro
June Patch Tuesday: Internet Explorer Finally Laid to Rest
blogs_trendmicro·2021-06-08·CVSS 5.5
[MEDIUM] June Patch Tuesday: Internet Explorer Finally Laid to Rest
Exploits & Vulnerabilities
## June Patch Tuesday: Internet Explorer Finally Laid to Rest
The June 2021 Patch Tuesday cycle offers good news to both IT and website administrators.
By: Trend Micro Jun 08, 2021 Read time: ( words)
Save to Folio
The June 2021 Patch Tuesday cycle offers good news to both IT and website administrators. For the former, the number of bulletins issued this month is, at 50, far lower than we’ve become accustomed to in recent months. The latter group, however, has much better news to process this month: Internet Explorer support finally comes to an end.
June Patches: Fifty Bulletins, But Only Five Critical
Of this month’s 50 bulletins, only five were rated by Microsoft as Critical. One of these bulletins covers a vulnerability in Microsoft Defender ( CVE-2021-
Talos
Microsoft Patch Tuesday for June 2021 — Snort rules and prominent vulnerabilities
blogs_talos·2021-06-08·CVSS 8.8
[HIGH] Microsoft Patch Tuesday for June 2021 — Snort rules and prominent vulnerabilities
## Microsoft Patch Tuesday for June 2021 — Snort rules and prominent vulnerabilities
By Jon Munshaw, with contributions from Edmund Brumaghin.
Microsoft released its monthly security update Tuesday, disclosing 51 vulnerabilities across its suite of products, breaking last month’s 16-month record of the fewest vulnerabilities disclosed in a month by the company.
There are only four critical vulnerabilities patched in this month, while all the other ones are considered “important.” However, there are several vulnerabilities that Microsoft states are being actively exploited in the wild.
This month’s security update provides updates for several pieces of software and Windows functions, including SharePoint Server, the Windows kernel and Outlook. For a full rundown of these CVEs, head to M
Qualys
Microsoft & Adobe Patch Tuesday (June 2021) – Microsoft 50 Vulnerabilities with 5 Critical, Adobe 21 Critical Vulnerabilities
blogs_qualys·2021-06-08·CVSS 5.2
CVE-2021-31985 [MEDIUM] Microsoft & Adobe Patch Tuesday (June 2021) – Microsoft 50 Vulnerabilities with 5 Critical, Adobe 21 Critical Vulnerabilities
## Microsoft Patch Tuesday – June 2021
Microsoft patched 50 CVEs in their June 2021 Patch Tuesday release, and five of them are rated as critical severity. Six have applicable exploits.
## Critical Microsoft Vulnerabilities Patched
CVE-2021-31985 – Microsoft Defender Remote Code Execution Vulnerability
Microsoft released patches addressing a critical RCE vulnerability in its Defender product (CVE-2021-31985). This CVE has a high likelihood of exploitability and is assigned a CVSSv3 base score of 7.8 by the vendor.
CVE-2021-31959 – Scripting Engine Memory Corruption Vulnerability
Microsoft released patches addressing a critical memory corruption vulnerability in the Chakra JScript scripting engine. This vulnerability impacts Windows RT, Windows 7, Windows 8, Windows 10, Windows Server
Trendmicro
June Patch Tuesday: Internet Explorer Finally Laid to Rest
blogs_trendmicro·2021-06-08·CVSS 5.5
[MEDIUM] June Patch Tuesday: Internet Explorer Finally Laid to Rest
Exploits & Vulnerabilities
## June Patch Tuesday: Internet Explorer Finally Laid to Rest
The June 2021 Patch Tuesday cycle offers good news to both IT and website administrators.
By: Trend Micro Jun 08, 2021 Read time: ( words)
Save to Folio
The June 2021 Patch Tuesday cycle offers good news to both IT and website administrators. For the former, the number of bulletins issued this month is, at 50, far lower than we’ve become accustomed to in recent months. The latter group, however, has much better news to process this month: Internet Explorer support finally comes to an end.
June Patches: Fifty Bulletins, But Only Five Critical
Of this month’s 50 bulletins, only five were rated by Microsoft as Critical. One of these bulletins covers a vulnerability in Microsoft Defender ( CVE-2021-
Crowdstrike
June 2021 Patch Tuesday: Updates and Analysis
blogs_crowdstrike·CVSS 7.5
CVE-2026-20929 [HIGH] June 2021 Patch Tuesday: Updates and Analysis
How CrowdStrike is Accelerating Exposure Evaluation as Adversaries Gain Speed Apr 06, 2026
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How CrowdStrike is Accelerating Exposure Evaluation as Adversaries Gain Speed Apr 06, 2026
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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
Video Highlights the 4 Key Steps to Successful Incident Response Dec 02, 2019
Helping Non-Security Stakeholders Understand AT
Crowdstrike
June 2021 Patch Tuesday: Updates and Analysis
blogs_crowdstrike·CVSS 7.5
CVE-2026-20929 [HIGH] June 2021 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
http://packetstormsecurity.com/files/163443/MpEngine-ASProtect-Embedded-Runtime-DLL-Memory-Corruption.htmlhttps://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-31985http://packetstormsecurity.com/files/163443/MpEngine-ASProtect-Embedded-Runtime-DLL-Memory-Corruption.htmlhttps://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-31985
2021-06-08
Published