Dashboard / CVE-2026-78450

CVE-2026-78450

HIGH
MEDIUM Priority: 0.06 BB Relevance: 66/100
Published: 2026-09-08 Modified: 2026-10-30 First seen: 2026-10-30 Status: active

Attack Surface

Network No Auth No Interaction Conf. Impact Integ. Impact

CVSS Vector Breakdown

AV: Network
AC: High
PR: None
UI: None
S: Unchanged
C: High
I: High
A: High

Description

Use after free in Reliable Multicast Transport Driver (RMCAST) allows an unauthorized attacker to execute code over a network.

Weakness Classification (1)

Affected Software (6)

VendorProductVersion
Microsoft Windows 10 Version 1809 10.0.17763.0 < 10.0.17763.9245
Microsoft Windows Server 2019 10.0.17763.0 < 10.0.17763.9245
Microsoft Windows Server 2019 (Server Core installation) 10.0.17763.0 < 10.0.17763.9245
Microsoft Windows Server 2022 10.0.20348.0 < 10.0.20348.5622
Microsoft Windows Server 2025 10.0.26100.0 < 10.0.26100.33438
Microsoft Windows Server 2025 (Server Core installation) 10.0.26100.0 < 10.0.26100.33438

References & Advisories (1)

Bug Bounty Relevance

66 / 100
✓ Network accessible
✓ No authentication
✓ No user interaction

CVSS Score

8.1 / 10.0 v3.1
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

EPSS — Exploitation Probability

0.71%
Raw Score 0.007070
Percentile 53.4%
Date 2026-10-30

Intelligence Sources

mitre ref →

External Links