CVE-2026-20832
published 2026-01-13CVE-2026-20832: Windows Remote Procedure Call Interface Definition Language (IDL) Elevation of Privilege Vulnerability
PriorityP344high7.8CVSS 3.1
AVLACLPRLUINSUCHIHAH
EPSS
0.46%
37.0th percentile
Windows Remote Procedure Call Interface Definition Language (IDL) Elevation of Privilege Vulnerability
Affected
36 ranges· showing 25
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| microsoft | windows_10_1607 | < 10.0.14393.8783 | 10.0.14393.8783 |
| microsoft | windows_10_1809 | < 10.0.17763.8276 | 10.0.17763.8276 |
| microsoft | windows_10_21h2 | < 10.0.19044.6809 | 10.0.19044.6809 |
| microsoft | windows_10_22h2 | < 10.0.19045.6809 | 10.0.19045.6809 |
| microsoft | windows_10_version_1607 | >= 10.0.14393.0 < 10.0.14393.8783 | 10.0.14393.8783 |
| microsoft | windows_10_version_1809 | >= 10.0.17763.0 < 10.0.17763.8276 | 10.0.17763.8276 |
| microsoft | windows_10_version_21h2 | >= 10.0.19044.0 < 10.0.19044.6809 | 10.0.19044.6809 |
| microsoft | windows_10_version_22h2 | >= 10.0.19045.0 < 10.0.19045.6809 | 10.0.19045.6809 |
| microsoft | windows_11_23h2 | < 10.0.22631.6491 | 10.0.22631.6491 |
| microsoft | windows_11_24h2 | < 10.0.26100.7623 | 10.0.26100.7623 |
| microsoft | windows_11_25h2 | < 10.0.26200.7623 | 10.0.26200.7623 |
| microsoft | windows_11_version_22h3 | >= 10.0.22631.0 < 10.0.22631.6491 | 10.0.22631.6491 |
| microsoft | windows_11_version_23h2 | >= 10.0.22631.0 < 10.0.22631.6491 | 10.0.22631.6491 |
| microsoft | windows_11_version_24h2 | >= 10.0.26100.0 < 10.0.26100.7623 | 10.0.26100.7623 |
| microsoft | windows_11_version_25h2 | >= 10.0.26200.0 < 10.0.26200.7623 | 10.0.26200.7623 |
| microsoft | windows_server_2016 | < 10.0.14393.8783 | 10.0.14393.8783 |
| microsoft | windows_server_2016 | >= 10.0.14393.0 < 10.0.14393.8783 | 10.0.14393.8783 |
| microsoft | windows_server_2019 | < 10.0.17763.8276 | 10.0.17763.8276 |
| microsoft | windows_server_2019 | >= 10.0.17763.0 < 10.0.17763.8276 | 10.0.17763.8276 |
| microsoft | windows_server_2022 | < 10.0.20348.4648 | 10.0.20348.4648 |
| microsoft | windows_server_2022 | >= 10.0.20348.0 < 10.0.20348.4648 | 10.0.20348.4648 |
| microsoft | windows_server_2022_23h2 | < 10.0.25398.2092 | 10.0.25398.2092 |
| microsoft | windows_server_2025 | < 10.0.26100.32230 | 10.0.26100.32230 |
| microsoft | windows_server_2025 | >= 10.0.26100.0 < 10.0.26100.32230 | 10.0.26100.32230 |
| msrc | windows_10_version_1607 | — | — |
CVSS provenance
nvdv3.17.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
vendor_msrc7.8HIGH
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Microsoft
Windows Remote Procedure Call Interface Definition Language (IDL) Elevation of Privilege Vulnerability
vendor_msrc·2026-01-13·CVSS 7.8
CVE-2026-20832 [HIGH] CWE-415 Windows Remote Procedure Call Interface Definition Language (IDL) Elevation of Privilege Vulnerability
Windows Remote Procedure Call Interface Definition Language (IDL) Elevation of Privilege Vulnerability
FAQ: What privileges could be gained by an attacker who successfully exploited the vulnerability?
An attacker who successfully exploited this vulnerability could create, modify, or delete files in the security context of the "NT AUTHORITY\SYSTEM" account.
Windows Remote Procedure Call Interface Definition Language (IDL): Windows Remote Procedure Call Interface Definition Language (IDL)
Microsoft: Microsoft
Customer Action Required: Yes
Impact: Elevation of Privilege
Exploit Status: Publicly Disclosed:No;Exploited:No;Latest Software Release:Exploitation Less Likely
Reference: https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB5073723
Reference: https://support.microsoft.c
GHSA
GHSA-jqcr-784r-mrg6: Windows Remote Procedure Call Interface Definition Language (IDL) Elevation of Privilege Vulnerability
ghsa_unreviewed·2026-01-13
CVE-2026-20832 [HIGH] CWE-415 GHSA-jqcr-784r-mrg6: Windows Remote Procedure Call Interface Definition Language (IDL) Elevation of Privilege Vulnerability
Windows Remote Procedure Call Interface Definition Language (IDL) Elevation of Privilege Vulnerability
No detection rules found.
No public exploits indexed.
Bleepingcomputer
Microsoft January 2026 Patch Tuesday fixes 3 zero-days, 114 flaws
blogs_bleepingcomputer·2026-01-13·CVSS 5.5
[MEDIUM] Microsoft January 2026 Patch Tuesday fixes 3 zero-days, 114 flaws
## Microsoft January 2026 Patch Tuesday fixes 3 zero-days, 114 flaws
## Lawrence Abrams
57 Elevation of Privilege vulnerabilities
3 Security Feature Bypass vulnerabilities
22 Remote Code Execution vulnerabilities
22 Information Disclosure vulnerabilities
2 Denial of Service vulnerabilities
5 Spoofing vulnerabilities
When BleepingComputer reports on Patch Tuesday security updates, we only count those released by Microsoft today. Therefore, the number of flaws does not include Microsoft Edge (1 flaw) and Mariner vulnerabilities fixed earlier this month.
To learn more about the non-security updates released today, you can review our dedicated articles on the Windows 11 KB5074109 & KB5073455 cumulative updates and Windows 10 KB5073724 extended security update .
## 3 zero-days, one ex
Wiz
CVE-2026-20832 Impact, Exploitability, and Mitigation Steps | Wiz
blogs_wiz·CVSS 7.8
CVE-2026-20832 [HIGH] CVE-2026-20832 Impact, Exploitability, and Mitigation Steps | Wiz
## CVE-2026-20832 :
vulnerability analysis and mitigation
Windows Remote Procedure Call Interface Definition Language (IDL) Elevation of Privilege Vulnerability
Source : NVD
## 7.8
Score
Published January 13, 2026
Severity HIGH
CNA Score 7.8
Has Public Exploit No
Has CISA KEV Exploit No
CISA KEV Release Date N/A
CISA KEV Due Date N/A
Exploitation Probability Percentile (EPSS) 7.4
Exploitation Probability (EPSS) N/A
Sources
NVD
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#
2026-01-13
Published