CVE-2023-35317
published 2023-07-11CVE-2023-35317: Windows Server Update Service (WSUS) Elevation of Privilege Vulnerability
PriorityP342high7.8CVSS 3.1
AVLACLPRLUINSUCHIHAH
EPSS
1.76%
75.5th percentile
Windows Server Update Service (WSUS) Elevation of Privilege Vulnerability
Affected
11 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| microsoft | windows_server_2012 | — | — |
| microsoft | windows_server_2012 | >= 6.2.9200.0 < 6.2.9200.24374 | 6.2.9200.24374 |
| microsoft | windows_server_2012_r2 | >= 6.3.9600.0 < 6.3.9600.21063 | 6.3.9600.21063 |
| microsoft | windows_server_2016 | >= 10.0.14393.0 < 10.0.14393.6085 | 10.0.14393.6085 |
| microsoft | windows_server_2019 | >= 10.0.17763.0 < 10.0.17763.4645 | 10.0.17763.4645 |
| microsoft | windows_server_2022 | >= 10.0.20348.0 < 10.0.20348.1850 | 10.0.20348.1850 |
| msrc | windows_server_2012 | — | — |
| msrc | windows_server_2012_r2 | — | — |
| msrc | windows_server_2016 | — | — |
| msrc | windows_server_2019 | — | — |
| msrc | windows_server_2022 | — | — |
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
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.
GHSA
GHSA-pcx7-hvg4-wg56: Windows Server Update Service (WSUS) Elevation of Privilege Vulnerability
ghsa_unreviewed·2023-07-11
CVE-2023-35317 [HIGH] GHSA-pcx7-hvg4-wg56: Windows Server Update Service (WSUS) Elevation of Privilege Vulnerability
Windows Server Update Service (WSUS) Elevation of Privilege Vulnerability
Microsoft
Windows Server Update Service (WSUS) Elevation of Privilege Vulnerability
vendor_msrc·2023-07-11·CVSS 7.8
CVE-2023-35317 [HIGH] CWE-502 Windows Server Update Service (WSUS) Elevation of Privilege Vulnerability
Windows Server Update Service (WSUS) 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 gain administrator privileges.
Windows Server Update Service: Windows Server Update Service
Microsoft: Microsoft
Customer Action Required: Yes
Impact: Elevation of Privilege
Exploit Status: Publicly Disclosed:No;Exploited:No;Latest Software Release:Exploitation Less Likely;DOS:N/A
Reference: https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB5028168
Reference: https://support.microsoft.com/help/5028168
Reference: https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB5028171
Reference: https://support.microsoft.com/help/5028171
Ref
Suricata
ET WEB_SERVER Microsoft Windows Server Update Services (WSUS) Elevation of Privilege via Insecure Deserialization (CVE-2023-35317)
suricata·2025-10-27·CVSS 7.8
CVE-2023-35317 [HIGH] ET WEB_SERVER Microsoft Windows Server Update Services (WSUS) Elevation of Privilege via Insecure Deserialization (CVE-2023-35317)
ET WEB_SERVER Microsoft Windows Server Update Services (WSUS) Elevation of Privilege via Insecure Deserialization (CVE-2023-35317)
Rule: alert http any any -> $HOME_NET any (msg:"ET WEB_SERVER Microsoft Windows Server Update Services (WSUS) Elevation of Privilege via Insecure Deserialization (CVE-2023-35317)"; flow:established,to_server; http.uri; content:"/ClientWebService/Client.asmx"; fast_pattern; startswith; http.header; to_lowercase; content:"clientwebservice/getcookie"; http.request_body; content:"SimpleTargeting"; content:"CookieData"; http.method; content:"POST"; reference:url,hawktrace.com/blog/CVE-2025-59287; reference:cve,2023-35317; classtype:web-application-attack; sid:2065402; rev:1; metadata:attack_target Server, tls_state TLSDecrypt, created_at 2025_10_27, cve CVE_2023_35
No public exploits indexed.
2023-07-11
Published