Threat Intelligence / CVE / CVE-2026-49160

CVE-2026-49160 — Microsoft Windows 10 Version 1607

CVSS v3.1 7.5 (HIGH) · EPSS 48.4% (higher than 98.7% of all scored CVEs) · Priority 9.7/10 · Published 2026-06-09

As of 2026-06-23, CVE-2026-49160 is a HIGH-severity vulnerability in Microsoft Windows 10 Version 1607, CVSS v3.1 7.5, EPSS 48.4% (98.7th percentile). Threadlinqs Intelligence links 1 tracked threat campaign to CVE-2026-49160, most recently “Microsoft June 2026 Patch Tuesday — 198+ CVEs Including CVE-2026-49160 (HTTP.sys 'HTTP/2 Bomb' DoS), CVE-2026-50507 (BitLocker 'YellowKey' Bypass) and CVE-2026-45586 (Collaborative Translation Framework EoP)”.

Last updated: 2026-06-23

What is CVE-2026-49160?

Uncontrolled resource consumption in HTTP/2 allows an unauthorized attacker to deny service over a network.

The record classifies CVE-2026-49160 under weakness class CWE-400. Its CVSS v3 base vector states that the flaw is reachable remotely over the network, needs no prior authentication, needs no user interaction, and has high impact on availability. 12 affected-product entries are recorded, across 1 vendor, listed below. The identifier was first published 95 days ago.

Severity and exploitation probability

CVSS v3.1 base score: 7.5 — HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C
EPSS (FIRST): 48.4% probability of exploitation in the next 30 days, higher than 98.7% of all scored CVEs
CISA KEV: Not listed in the CISA Known Exploited Vulnerabilities catalog
Threadlinqs priority: 9.7/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
Published: 2026-06-09, last modified 2026-06-23

Is CVE-2026-49160 being exploited?

Weaponised exploit code for CVE-2026-49160 is publicly available. 1 public proof-of-concept repository is tracked for this identifier.

dhmosfunk/CVE-2026-49160-CVE-2026-47291-HTTP.sys (github)

Affected products and versions

Microsoft: Windows 10 Version 1607, Windows 10 Version 1809, Windows 10 Version 21H2, Windows 10 Version 22H2, Windows 11 version 23H2, Windows 11 Version 23H2, Windows 11 Version 24H2, Windows 11 Version 25H2, Windows 11 version 26H1, Windows Server 2016, Windows Server 2016 (Server Core installation), Windows Server 2019

How to fix CVE-2026-49160

Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-49160. Apply the vendor fix referenced above to every affected product listed in this record, then confirm the running version against the vendor advisory.

Threat activity tracking CVE-2026-49160

1 tracked threat in the Threadlinqs corpus references CVE-2026-49160, either in the campaign’s CVE list or as an indicator on the campaign record.

Microsoft June 2026 Patch Tuesday — 198+ CVEs Including CVE-2026-49160 (HTTP.sys 'HTTP/2 Bomb' DoS), CVE-2026-50507 (BitLocker 'YellowKey' Bypass) and CVE-2026-45586 (Collaborative Translation Framework EoP) — HIGH · 2026-06-09

Sources

Enriched from CVE.org, NVD, FIRST EPSS, GitHub Security Advisories, public proof-of-concept repositories. Last verified by Threadlinqs on 2026-06-25. This product uses the NVD API but is not endorsed or certified by the NVD.

Vendor advisory and patch

msrc.microsoft.com — vendor advisory

Full detection coverage & IOCs for threats exploiting CVE-2026-49160 are available via the Threadlinqs MCP server (Purple tier). View plans →

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