CVE-2026-50411: Stack-based buffer overflow in Active Directory Federation Services (AD FS) allows an unauthorized attacker to deny service over a network.

highCVSS 7.5CVE-2026-50411

Stack-based buffer overflow in Active Directory Federation Services (AD FS) allows an unauthorized attacker to deny service over a network.

Details

Source: NVD Recent CVEs (US · database · site)
Severity: high — CVSS 7.5
Published: 2026-07-14
Last updated: 2026-07-21
Exploitation: Not in CISA KEV at last sync

Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2026-50411

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Low exploitation riskCVE-2026-504110.78% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 52% of all scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-50411	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

critical[NEW] [critical] Microsoft Windows products: Multiple vulnerabilitiescert-bund
unknownexploitedNCSC-2026-0231 [1.00] [M/H] Vulnerabilities fixed in Microsoft Windowsncsc-nl
highCVE-2026-50411: Windows Active Directory Federation Services Denial of Service Vulnerabilitymsrc

Recent advisories for Stack-based buffer overflow

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

criticalCVE-2026-67822: Tenda W6-S 1.0.0.4(510) contains a stack-based buffer overflow vulnerability in the /goform/wi…nvd · 2026-07-31
unknownCVE-2026-67248: A stack-based buffer overflow vulnerability was found in the File Explorer on the ADM. The vul…nvd · 2026-07-30
mediumCVE-2026-13309: Autel MaxiCharger AC Elite Home NFC Stack-based Buffer Overflow Arbitrary Code Execution Vulne…nvd · 2026-07-29
highCVE-2026-5056: GStreamer qtdemux Stack-based Buffer Overflow Remote Code Execution Vulnerability. This vulnera…nvd · 2026-07-29
unknownCVE-2026-12935: The TL-WR940N v6 router contains a vulnerability in its RTSP connection tracking module that c…nvd · 2026-07-29
unknownCVE-2026-55728: Stack-based Buffer Overflow (CWE-121) in `/usr/bin/ltsudo` `cmd_ipaddr_conflict` in Loytec LIP…nvd · 2026-07-24