CVE-2023-21708
published 2023-03-14CVE-2023-21708: Remote Procedure Call Runtime Remote Code Execution Vulnerability
PriorityP258critical9.8CVSS 3.1
AVNACLPRNUINSUCHIHAH
EPSS
1.49%
71.1th percentile
Remote Procedure Call Runtime Remote Code Execution Vulnerability
Affected
41 ranges· showing 25
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| microsoft | windows_10_1507 | < 10.0.10240.19805 | 10.0.10240.19805 |
| microsoft | windows_10_1607 | < 10.0.14393.5786 | 10.0.14393.5786 |
| microsoft | windows_10_1809 | < 10.0.17763.4131 | 10.0.17763.4131 |
| microsoft | windows_10_20h2 | < 10.0.19042.2728 | 10.0.19042.2728 |
| microsoft | windows_10_21h2 | < 10.0.19044.2728 | 10.0.19044.2728 |
| microsoft | windows_10_22h2 | < 10.0.19045.2728 | 10.0.19045.2728 |
| microsoft | windows_10_version_1507 | >= 10.0.10240.0 < 10.0.10240.19805 | 10.0.10240.19805 |
| microsoft | windows_10_version_1607 | >= 10.0.14393.0 < 10.0.14393.5786 | 10.0.14393.5786 |
| microsoft | windows_10_version_1809 | >= 10.0.0 < 10.0.17763.4131 | 10.0.17763.4131 |
| microsoft | windows_10_version_1809 | >= 10.0.17763.0 < 10.0.17763.4131 | 10.0.17763.4131 |
| microsoft | windows_10_version_20h2 | >= 10.0.0 < 10.0.19042.2728 | 10.0.19042.2728 |
| microsoft | windows_10_version_21h2 | >= 10.0.19043.0 < 10.0.19044.2728 | 10.0.19044.2728 |
| microsoft | windows_10_version_22h2 | >= 10.0.19045.0 < 10.0.19045.2728 | 10.0.19045.2728 |
| microsoft | windows_11_21h2 | < 10.0.22000.1696 | 10.0.22000.1696 |
| microsoft | windows_11_22h2 | < 10.0.22000.1413 | 10.0.22000.1413 |
| microsoft | windows_11_version_21h2 | >= 10.0.0 < 10.0.22000.1696 | 10.0.22000.1696 |
| microsoft | windows_11_version_22h2 | >= 10.0.22621.0 < 10.0.22621.1413 | 10.0.22621.1413 |
| microsoft | windows_server_2008 | — | — |
| microsoft | windows_server_2008_r2_service_pack_1 | >= 6.1.7601.0 < 6.1.7601.26415 | 6.1.7601.26415 |
| microsoft | windows_server_2008_service_pack_2 | >= 6.0.6003.0 < 6.0.6003.21966 | 6.0.6003.21966 |
| microsoft | windows_server_2012 | — | — |
| microsoft | windows_server_2012 | >= 6.2.9200.0 < 6.2.9200.24168 | 6.2.9200.24168 |
| microsoft | windows_server_2012_r2 | >= 6.3.9600.0 < 6.3.9600.20865 | 6.3.9600.20865 |
| microsoft | windows_server_2016 | >= 10.0.14393.0 < 10.0.14393.5786 | 10.0.14393.5786 |
| microsoft | windows_server_2019 | >= 10.0.17763.0 < 10.0.17763.4131 | 10.0.17763.4131 |
Detection & IOCsextracted from sources · hover to see the quote
- →Monitor for unauthenticated, specially crafted RPC calls arriving at RPC hosts — exploitation does not require authentication and targets the RPC Runtime service directly. ↗
- ·Blocking TCP port 135 at the enterprise perimeter firewall is explicitly recommended by Microsoft as a mitigation to reduce attack surface for CVE-2023-21708. ↗
CVSS provenance
nvdv3.19.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
vendor_msrc9.8CRITICAL
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Microsoft
Remote Procedure Call Runtime Remote Code Execution Vulnerability
vendor_msrc·2023-03-14·CVSS 9.8
CVE-2023-21708 [CRITICAL] CWE-191 Remote Procedure Call Runtime Remote Code Execution Vulnerability
Remote Procedure Call Runtime Remote Code Execution Vulnerability
FAQ: How could an attacker exploit this vulnerability?
To exploit this vulnerability, an unauthenticated attacker would need to send a specially crafted RPC call to an RPC host. This could result in remote code execution on the server side with the same permissions as the RPC service.
FAQ: Is blocking RPC with a perimeter firewall recommended?
Blocking TCP port 135 at the enterprise perimeter firewall is a recommended best practice that could reduce the likelihood of some potential attacks against this vulnerability.
Windows Remote Procedure Call: Windows Remote Procedure Call
Microsoft: Microsoft
Customer Action Required: Yes
Impact: Remote Code Execution
Exploit Status: Publicly Disclosed:No;Exploited:No;Latest Soft
GHSA
GHSA-p7hh-q888-5m4g: Remote Procedure Call Runtime Remote Code Execution Vulnerability
ghsa_unreviewed·2023-03-14
CVE-2023-21708 [CRITICAL] GHSA-p7hh-q888-5m4g: Remote Procedure Call Runtime Remote Code Execution Vulnerability
Remote Procedure Call Runtime Remote Code Execution Vulnerability
No detection rules found.
No public exploits indexed.
Qualys
The March 2023 Patch Tuesday Security Update Review | Qualys
blogs_qualys·2023-03-15·CVSS 9.8
[CRITICAL] The March 2023 Patch Tuesday Security Update Review | Qualys
#### Table of Contents
- Microsoft Patches for March 2023
- Adobe Patches for March 2023
- Zero-day Vulnerabilities Patched in March Patch Tuesday Edition
- Other Critical Severity Vulnerabilities Patched in March Patch Tuesday Edition
- Other Microsoft Vulnerability Highlights
- Microsoft Release Summary
- Discover and Prioritize Vulnerabilities in Vulnerability Management, Detection & Response (VMDR)
- Rapid Response withPatch Management (PM)
- EVALUATE Vendor-Suggested Mitigation with Policy Compliance (PC)
- Qualys Monthly Webinar Series
- This Month in Vulnerabilities & Patches
Microsoft has released its monthly security update for March 2023. This month’s updates addressed various vulnerabilities in different products. Let’s go through this month’s Patch Tuesday details and discuss
Talos
Microsoft Patch Tuesday for March 2023 — Snort rules and prominent vulnerabilities
blogs_talos·2023-03-14·CVSS 9.8
[CRITICAL] Microsoft Patch Tuesday for March 2023 — Snort rules and prominent vulnerabilities
## Microsoft Patch Tuesday for March 2023 — Snort rules and prominent vulnerabilities
Microsoft released its monthly security update Tuesday, disclosing 83 vulnerabilities across the company’s hardware and software line, including two issues that are actively being exploited in the wild, continuing a trend of zero-days appearing in Patch Tuesdays over the past few months.
Two of the vulnerabilities included in March’s security update have been exploited in the wild, according to Microsoft, including one critical issue.
In all, eight of the issues disclosed this month are critical, while the remainder — outside of one — is “important.”
A moderate-severity vulnerability that’s already being exploited in the wild is CVE-2023-24880 , a security feature bypass vulnerability in Windows Smart
Talos
Microsoft Patch Tuesday for March 2023 — Snort rules and prominent vulnerabilities
blogs_talos·2023-03-14·CVSS 9.8
[CRITICAL] Microsoft Patch Tuesday for March 2023 — Snort rules and prominent vulnerabilities
Microsoft released its monthly security update Tuesday, disclosing 83 vulnerabilities across the company’s hardware and software line, including two issues that are actively being exploited in the wild, continuing a trend of zero-days appearing in Patch Tuesdays over the past few months.
Two of the vulnerabilities included in March’s security update have been exploited in the wild, according to Microsoft, including one critical issue.
In all, eight of the issues disclosed this month are critical, while the remainder — outside of one — is “important.”
A moderate-severity vulnerability that’s already being exploited in the wild is CVE-2023-24880, a security feature bypass vulnerability in Windows SmartScreen, a cloud-based anti-phishing and anti-malware feature included in several Microso
Crowdstrike
March 2023 Patch Tuesday: Updates and Analysis
blogs_crowdstrike·CVSS 7.5
CVE-2026-20929 [HIGH] March 2023 Patch Tuesday: Updates and Analysis
How CrowdStrike is Accelerating Exposure Evaluation as Adversaries Gain Speed Apr 06, 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 CrowdStrike is Accelerating Exposure Evaluation as Adversaries Gain Speed Apr 06, 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
Video Highlights the 4 Key Steps to Successful Incident Response Dec 02, 2019
Helping Non-Security Stakeholders Understand AT
2023-03-14
Published