CVE-2026-50355
published 2026-07-14CVE-2026-50355: Stack-based buffer overflow in Active Directory Federation Services allows an unauthorized attacker to deny service over a network.
PriorityP348high7.5CVSS 3.1
AVNACLPRNUINSUCNINAH
EPSS
1.17%
65.3th percentile
Stack-based buffer overflow in Active Directory Federation Services allows an unauthorized attacker to deny service over a network.
Affected
28 ranges· showing 25
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| microsoft | microsoft_net_framework_3.5_and_4.7.2 | >= 4.7.0 < 2.0.50727.9069 & 3.0.30729.9067 & 4.7.4143.0 | 2.0.50727.9069 & 3.0.30729.9067 & 4.7.4143.0 |
| microsoft | microsoft_net_framework_3.5_and_4.8 | >= 4.8.0 < 2.0.50727.9069 & 3.0.30729.9067 & 4.8.4803.0 | 2.0.50727.9069 & 3.0.30729.9067 & 4.8.4803.0 |
| microsoft | microsoft_net_framework_3.5_and_4.8.1 | >= 4.8.1 < 2.0.50727.9182 & 3.0.30729.9168 & 4.8.9339.0 | 2.0.50727.9182 & 3.0.30729.9168 & 4.8.9339.0 |
| microsoft | microsoft_net_framework_4.6.2_4.7_4.7.1_4.7.2 | >= 4.7.0 < 4.7.4143.0 | 4.7.4143.0 |
| microsoft | microsoft_net_framework_4.8 | >= 4.8.0 < 4.8.4803.0 | 4.8.4803.0 |
| microsoft | microsoft_net_framework_4.8.1 | >= 4.8.0.0 < 4.8.9340.0 | 4.8.9340.0 |
| microsoft | net_framework | — | — |
| microsoft | net_framework | — | — |
| microsoft | net_framework | — | — |
| microsoft | net_framework | — | — |
| microsoft | net_framework | — | — |
| microsoft | net_framework | — | — |
| microsoft | net_framework | — | — |
| microsoft | windows_10_1607 | < 10.0.14393.9339 | 10.0.14393.9339 |
| microsoft | windows_10_1809 | < 10.0.17763.9020 | 10.0.17763.9020 |
| microsoft | windows_10_version_1607 | >= 10.0.14393.0 < 10.0.14393.9339 | 10.0.14393.9339 |
| microsoft | windows_10_version_1809 | >= 10.0.17763.0 < 10.0.17763.9020 | 10.0.17763.9020 |
| microsoft | windows_server_2012 | — | — |
| microsoft | windows_server_2012 | >= 6.2.9200.0 < 6.2.9200.26226 | 6.2.9200.26226 |
| microsoft | windows_server_2012_r2 | >= 6.3.9600.0 < 6.3.9600.23291 | 6.3.9600.23291 |
| microsoft | windows_server_2016 | < 10.0.14393.9339 | 10.0.14393.9339 |
| microsoft | windows_server_2016 | >= 10.0.14393.0 < 10.0.14393.9339 | 10.0.14393.9339 |
| microsoft | windows_server_2019 | < 10.0.17763.9020 | 10.0.17763.9020 |
| microsoft | windows_server_2019 | >= 10.0.17763.0 < 10.0.17763.9020 | 10.0.17763.9020 |
| microsoft | windows_server_2022 | < 10.0.20348.5386 | 10.0.20348.5386 |
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VulDB
Microsoft Windows up to Server 2025 Active Directory Federation Services stack-based overflow
vuldb·2026-07-19·CVSS 7.5
CVE-2026-50355 [HIGH] Microsoft Windows up to Server 2025 Active Directory Federation Services stack-based overflow
A vulnerability, which was classified as critical, was found in Microsoft Windows up to Server 2025. This issue affects some unknown processing of the component Active Directory Federation Services. Executing a manipulation can lead to stack-based buffer overflow.
This vulnerability is handled as CVE-2026-50355. The attack can be executed remotely. There is not any exploit available.
GHSA
Stack-based buffer overflow in Active Directory Federation Services allows an unauthorized attacker to deny service over a network.
ghsa_unreviewed·2026-07-14
CVE-2026-50355 [HIGH] CWE-121 Stack-based buffer overflow in Active Directory Federation Services allows an unauthorized attacker to deny service over a network.
Stack-based buffer overflow in Active Directory Federation Services allows an unauthorized attacker to deny service over a network.
No detection rules found.
No public exploits indexed.
Rapid7
Patch Tuesday - July 2026
blogs_rapid7·2026-07-14·CVSS 9.6
CVE-2026-58617 [CRITICAL] Patch Tuesday - July 2026
Microsoft is publishing 622 vulnerabilities on July 2026 Patch Tuesday , including a record-breaking 416 Windows vulnerabilities. Microsoft is aware of exploitation in the wild for two of the vulnerabilities published today, both of which are listed on CISA KEV, as well as public disclosure for one other. As usual, browser vulns are not included in the Patch Tuesday count above. Rapid7 noted last month that Microsoft no longer enumerates Chromium CVEs in the Security Update Guide. However, Microsoft has now taken the pursuit of minimalism much further, since today’s Security Update Guide no longer lists out even Microsoft vulnerabilities! Instead, we now receive a summary table of vulnerability counts by product family, as well as a new slimline “Notable CVEs” section. All of this only ser
Sans Isc
Microsoft Patch Tuesday July 2026 - The AI Acopolypse is Here , (Tue, Jul 14th)
blogs_sans_isc·2026-07-14·CVSS 6.1
CVE-2026-56155 [MEDIUM] Microsoft Patch Tuesday July 2026 - The AI Acopolypse is Here , (Tue, Jul 14th)
Microsoft Patch Tuesday July 2026 - The AI Acopolypse is Here
Published: 2026-07-14. Last Updated: 2026-07-14 19:14:58 UTC
by Johannes Ullrich (Version: 1)
0 comment(s)
This patch Tuesday includes a staggering 622 vulnerabilities, not including another 427 vulnerabilities in Chromium, affecting Microsoft's Edge browser. 62 of the vulnerabilities are rated critical. One was disclosed before today, and two have already been exploited.
Given the large number of vulnerabilities, it is difficult to point out "noteworthy" issues.
Already exploited vulnerabilities:
CVE-2026-56155 : Active Directory Federation Services Elevation of Privilege Vulnerability. This is an important (not critical) vulnerablity.
CVE-2026-56164: Microsoft SharePoint Server Elevation of Privilege Vulnerability. Micr
2026-07-14
Published