Is CVE-2026-50497 in the CISA KEV catalog?

No. CVE-2026-50497 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2026-50497?

CVE-2026-50497 has a CVSS v3 base score of 6.5 (MEDIUM).

What is the EPSS score for CVE-2026-50497?

CVE-2026-50497 has an EPSS score of 0.89% (55th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2026-50497?

Install KB5099535 for Windows 10 Version 1607. Fixes are available for 19 affected products.

CVE & CISA-KEV Catalog

CVE-2026-50497

MEDIUM

6.5

CVSS v3

NVD

Description

Off-by-one error in Windows Remote Desktop Protocol allows an unauthorized attacker to disclose information over a network.

CWE-193 CWE-908

How to fix

Remediation Available

Windows 10 Version 1607Windows

Install:KB5099535Microsoft

Windows 10 Version 1809Windows

Install:KB5099538Microsoft

Windows 10 Version 21H2Windows

Install:KB5099539Microsoft

Windows 10 Version 22H2Windows

Install:KB5099539Microsoft

Windows 11 Version 24H2Windows

Install:KB5101650Microsoft

Windows 11 Version 25H2Windows

Install:KB5101650Microsoft

Windows 11 Version 26H1Windows

Install:KB5101649Microsoft

Windows 11 version 26H1Windows

Install:KB5095051Microsoft

Windows Server 2012Windows

Install:KB5099445Microsoft

Windows Server 2012 (Server Core installation)Windows

Install:KB5099445Microsoft

Windows Server 2012 R2Windows

Install:KB5099444Microsoft

Windows Server 2012 R2 (Server Core installation)Windows

Install:KB5099444Microsoft

Windows Server 2016Windows

Install:KB5099535Microsoft

Windows Server 2016 (Server Core installation)Windows

Install:KB5099535Microsoft

Windows Server 2019Windows

Install:KB5099538Microsoft

Windows Server 2019 (Server Core installation)Windows

Install:KB5099538Microsoft

Windows Server 2022Windows

Install:KB5099540Microsoft

Windows Server 2025Windows

Install:KB5099536Microsoft

Windows Server 2025 (Server Core installation)Windows

Install:KB5099536Microsoft

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityNone

AvailabilityNone

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

Exploit Intelligence

0.89%probability of exploitation in 30 days

55thpercentile

Moderate risk: more likely to be exploited than 55% of all known CVEs.

References

Patch1

msrc.microsoft.com

Related Vulnerabilities

Other CWE-193 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2021-3156	High	7.8	99%	KEV	Fix
CVE-2003-0466	Critical	9.8	78%	-	-
CVE-2023-44444	High	7.8	56%	-	Fix
CVE-2021-23017	High	7.7	53%	-	Fix
CVE-2023-28709	High	7.5	52%	-	Fix
CVE-2018-8828	Critical	9.8	31%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-07-21.