CVE-2023-21727
published 2023-04-11CVE-2023-21727: Remote Procedure Call Runtime Remote Code Execution Vulnerability
PriorityP354high8.8CVSS 3.1
AVNACLPRLUINSUCHIHAH
EPSS
1.64%
73.7th percentile
Remote Procedure Call Runtime Remote Code Execution Vulnerability
Affected
40 ranges· showing 25
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| microsoft | windows_10_1607 | < 10.0.14393.5850 | 10.0.14393.5850 |
| microsoft | windows_10_1809 | < 10.0.17763.4252 | 10.0.17763.4252 |
| microsoft | windows_10_20h2 | < 10.0.19042.2846 | 10.0.19042.2846 |
| microsoft | windows_10_21h2 | < 10.0.19044.2846 | 10.0.19044.2846 |
| microsoft | windows_10_22h2 | < 10.0.19045.2846 | 10.0.19045.2846 |
| microsoft | windows_10_version_1507 | >= 10.0.10240.0 < 10.0.10240.19869 | 10.0.10240.19869 |
| microsoft | windows_10_version_1607 | >= 10.0.14393.0 < 10.0.14393.5850 | 10.0.14393.5850 |
| microsoft | windows_10_version_1809 | >= 10.0.0 < 10.0.17763.4252 | 10.0.17763.4252 |
| microsoft | windows_10_version_1809 | >= 10.0.17763.0 < 10.0.17763.4252 | 10.0.17763.4252 |
| microsoft | windows_10_version_20h2 | >= 10.0.0 < 10.0.19042.2846 | 10.0.19042.2846 |
| microsoft | windows_10_version_21h2 | >= 10.0.19043.0 < 10.0.19044.2846 | 10.0.19044.2846 |
| microsoft | windows_10_version_22h2 | >= 10.0.19045.0 < 10.0.19045.2846 | 10.0.19045.2846 |
| microsoft | windows_11_21h2 | < 10.0.22000.1817 | 10.0.22000.1817 |
| microsoft | windows_11_22h2 | < 10.0.22621.1555 | 10.0.22621.1555 |
| microsoft | windows_11_version_21h2 | >= 10.0.0 < 10.0.22000.1817 | 10.0.22000.1817 |
| microsoft | windows_11_version_22h2 | >= 10.0.22621.0 < 10.0.22621.1555 | 10.0.22621.1555 |
| microsoft | windows_server_2008 | — | — |
| microsoft | windows_server_2008_r2_service_pack_1 | >= 6.1.7601.0 < 6.1.7601.26466 | 6.1.7601.26466 |
| microsoft | windows_server_2008_service_pack_2 | >= 6.0.6003.0 < 6.0.6003.22015 | 6.0.6003.22015 |
| microsoft | windows_server_2012 | — | — |
| microsoft | windows_server_2012 | >= 6.2.9200.0 < 6.2.9200.24216 | 6.2.9200.24216 |
| microsoft | windows_server_2012_r2 | >= 6.3.9600.0 < 6.3.9600.20919 | 6.3.9600.20919 |
| microsoft | windows_server_2016 | >= 10.0.14393.0 < 10.0.14393.5850 | 10.0.14393.5850 |
| microsoft | windows_server_2019 | >= 10.0.17763.0 < 10.0.17763.4252 | 10.0.17763.4252 |
| microsoft | windows_server_2022 | >= 10.0.20348.0 < 10.0.20348.1668 | 10.0.20348.1668 |
Detection & IOCsextracted from sources · hover to see the quote
- →Detect specially crafted RPC calls sent by an authenticated attacker to an RPC host, which may indicate exploitation attempts targeting CVE-2023-21727 ↗
- ·Exploitation requires authentication; unauthenticated remote exploitation is not possible for this vulnerability ↗
- ·Successful exploitation results in code execution with the same privilege level as the RPC service, not necessarily SYSTEM-level ↗
- ·As of advisory publication, this vulnerability has not been publicly disclosed or exploited in the wild ↗
CVSS provenance
nvdv3.18.8HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
osv7.8HIGH
vendor_msrc8.8HIGH
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OSV
linux-iot vulnerabilities
osv·2025-12-04·CVSS 7.8
CVE-2025-40300 linux-iot vulnerabilities
linux-iot vulnerabilities
Jean-Claude Graf, Sandro Rüegge, Ali Hajiabadi, and Kaveh Razavi discovered
that the Linux kernel contained insufficient branch predictor isolation
between a guest and a userspace hypervisor for certain processors. This
flaw is known as VMSCAPE. An attacker in a guest VM could possibly use this
to expose sensitive information from the host OS. (CVE-2025-40300)
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- HSI subsystem;
- I3C subsystem;
- SMB network file system;
- Padata parallel execution mechanism;
- Timer subsystem;
- Networking core;
(CVE-2023-52854, CVE-2024-35867, CVE-2024-50061, CVE-2024-56664,
CVE-2025-21727, CVE-2025-3
GHSA
GHSA-h785-wmf4-9p56: Remote Procedure Call Runtime Remote Code Execution Vulnerability
ghsa_unreviewed·2023-04-11
CVE-2023-21727 [HIGH] GHSA-h785-wmf4-9p56: Remote Procedure Call Runtime Remote Code Execution Vulnerability
Remote Procedure Call Runtime Remote Code Execution Vulnerability
Microsoft
Remote Procedure Call Runtime Remote Code Execution Vulnerability
vendor_msrc·2023-04-11·CVSS 8.8
CVE-2023-21727 [HIGH] CWE-122 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 authenticated 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.
Windows RPC API: Windows RPC API
Microsoft: Microsoft
Customer Action Required: Yes
Impact: Remote Code Execution
Exploit Status: Publicly Disclosed:No;Exploited:No;Latest Software Release:Exploitation Less Likely;Older Software Release:Exploitation Less Likely;DOS:N/A
Reference: https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB5025229
Reference: https://support.microsoft.com/help/5025229
Reference: https://catalog.update.mic
No detection rules found.
No public exploits indexed.
Qualys
Microsoft and Adobe Patch Tuesday April 2023 Security Update Review | Qualys
blogs_qualys·2023-04-12
Microsoft and Adobe Patch Tuesday April 2023 Security Update Review | Qualys
#### Table of Contents
- Microsoft Patch Tuesday for April 2023
- Adobe Patches for April 2023
- Zero-day Vulnerability Patched in April Patch Tuesday Edition
- Other Critical Severity Vulnerabilities Patched in April Patch Tuesday Edition
- Other Microsoft Vulnerability Highlights
- Microsoft Release Summary
- Discover and Prioritize Vulnerabilities in Vulnerability Management, Detection & Response (VMDR)
- Rapid Response with Patch Management (PM)
- EVALUATE Vendor-Suggested Mitigation with Policy Compliance (PC)
- EXECUTE Mitigation Using Qualys Custom Assessment and Remediation (CAR)
- Qualys Monthly Webinar Series
- This Month in Vulnerabilities & Patches
Microsoft released security updates to address 114 vulnerabilities in the April Patch Tuesday edition. The security advisories co
Qualys
Microsoft and Adobe Patch Tuesday April 2023 Security Update Review
blogs_qualys·2023-04-12
Microsoft and Adobe Patch Tuesday April 2023 Security Update Review
## Table of Contents
Microsoft Patch Tuesday for April 2023
Adobe Patches for April 2023
Zero-day Vulnerability Patched in April Patch Tuesday Edition
Other Critical Severity Vulnerabilities Patched in April Patch Tuesday Edition
Other Microsoft Vulnerability Highlights
Microsoft Release Summary
Discover and Prioritize Vulnerabilities in Vulnerability Management, Detection & Response (VMDR)
Rapid Response with Patch Management (PM)
EVALUATE Vendor-Suggested Mitigation with Policy Compliance (PC)
EXECUTE Mitigation Using Qualys Custom Assessment and Remediation (CAR)
Qualys Monthly Webinar Series
This Month in Vulnerabilities & Patches
Microsoft released security updates to address 114 vulnerabilities in the April Patch Tuesday edition. The security advisories cover various vul
2023-04-11
Published