CVE-2026-34327
published 2026-05-07CVE-2026-34327: Externally controlled reference to a resource in another sphere in Microsoft Partner Center allows an unauthorized attacker to perform spoofing over a network.
PriorityP349high8.2CVSS 3.1
AVNACLPRNUINSUCHILAN
EPSS
0.64%
46.0th percentile
Externally controlled reference to a resource in another sphere in Microsoft Partner Center allows an unauthorized attacker to perform spoofing over a network.
Affected
1 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| microsoft | microsoft_partner_center | — | — |
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VulDB
Microsoft Partner Center external reference (EUVD-2026-28452 / WID-SEC-2026-1419)
vuldb·2026-05-24·CVSS 8.2
CVE-2026-34327 [HIGH] Microsoft Partner Center external reference (EUVD-2026-28452 / WID-SEC-2026-1419)
A vulnerability, which was classified as critical, was found in Microsoft Partner Center. This vulnerability affects unknown code. Such manipulation leads to externally controlled reference.
This vulnerability is listed as CVE-2026-34327. The attack may be performed from remote. There is no available exploit.
This product is a managed service, indicating that users are not permitted to maintain vulnerability countermeasures themselves.
GHSA
GHSA-jvw8-2m5m-9449: Externally controlled reference to a resource in another sphere in Microsoft Partner Center allows an unauthorized attacker to perform spoofing over a
ghsa_unreviewed·2026-05-08
CVE-2026-34327 [HIGH] CWE-610 GHSA-jvw8-2m5m-9449: Externally controlled reference to a resource in another sphere in Microsoft Partner Center allows an unauthorized attacker to perform spoofing over a
Externally controlled reference to a resource in another sphere in Microsoft Partner Center allows an unauthorized attacker to perform spoofing over a network.
No detection rules found.
No public exploits indexed.
Rapid7
Patch Tuesday - May 2026
blogs_rapid7·2026-05-13·CVSS 10.0
CVE-2026-41089 [CRITICAL] Patch Tuesday - May 2026
Microsoft is publishing 137 vulnerabilities on May 2026 Patch Tuesday . Microsoft is not aware of exploitation in the wild or public disclosure for any of these vulnerabilities. So far this month, Microsoft has provided patches to address 133 browser vulnerabilities, which are not included in the Patch Tuesday count above.
## Windows Netlogon: critical RCE
Anyone responsible for securing a domain controller should prioritize remediation of CVE-2026-41089 , which is a critical stack-based buffer overflow in Windows Netlogon with a CVSS v3 base score of 9.8. Exploitation leads to execution in the context of the Netlogon service, so that’s SYSTEM privileges on the domain controller. For most pentesters, that’s the point at which the customer report more or less writes itself. No privileges
Qualys
Microsoft and Adobe Patch Tuesday, May 2026 Security Update Review
blogs_qualys·2026-05-12
CVE-2026-40364 Microsoft and Adobe Patch Tuesday, May 2026 Security Update Review
## Table of Contents
Microsoft Patch Tuesday forMay2026
Adobe Patches for May 2026
Critical Severity Vulnerabilities Patched inMayPatch Tuesday Edition
Other Microsoft Vulnerability Highlights
Microsoft Release Summary
Qualys Monthly Webinar Series
May 2026’s Patch Tuesday arrives with Microsoft addressing a fresh set of vulnerabilities across its ecosystem, reinforcing the ongoing need for timely patching in an increasingly threat-heavy landscape. Here’s a quick breakdown of what you need to know.
## Microsoft Patch Tuesday for May 2026
This month’s release addresses 137 vulnerabilities, including 30 critical and 103 important-severity vulnerabilities.
In this month’s updates, Microsoft has not addressed any publicly disclosed zero-day vulnerability.
Microsoft has addressed 128
Sans Isc
Microsoft May 2026 Patch Tuesday, (Tue, May 12th)
blogs_sans_isc·2026-05-12·CVSS 4.3
CVE-2026-41103 [MEDIUM] Microsoft May 2026 Patch Tuesday, (Tue, May 12th)
Microsoft May 2026 Patch Tuesday
Published: 2026-05-12. Last Updated: 2026-05-12 18:29:36 UTC
by Johannes Ullrich (Version: 1)
0 comment(s)
Today's Microsoft patch Tuesday fixes 137 different vulnerabilities. In addition, the update addresses 137 Chromium-related issues affecting Microsoft Edge.
There are no already disclosed or already exploited vulnerabilities included in today's patches. I removed the Chromium issues from the table below and included only the 137 Microsoft issues to make it more readable.
Note that issues related to Microsoft Azure are labeled as "no customer action required.
Significant Vulnerabilities of interest:
CVE-2026-41103: This vulnerability affects the Microsoft SSO Plugin for Jira & Confluence. Exploitation could lead to an elevation of privileges. Wit
Crowdstrike
May 2026 Patch Tuesday: 30 Critical Vulnerabilities Among 130 CVEs
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Video Hi
2026-05-07
Published