CSIRTS // UNIFIED SECURITY ADVISORY FEEDSYS ● ONLINE · POWERED BY INTELFUSIONS.COM

← Back to feed

CVE-2026-53366: ipv4: account for fraggap on the paged allocation path

highCVSS 8.5CVE-2026-53366

CSIRTS triage

Other
What
The vulnerability relates to the handling of fraggap on the paged allocation path in IPv4.
Who is affected
Deployments using the affected IPv4 implementation.
Urgency
Remediation is necessary as it may lead to unforeseen issues, but exploitation status is currently unknown.
Action
Monitor for updates regarding this vulnerability.

AI-assisted analysis generated from the source advisory — verify against the original.

Details

Source
Microsoft Security Response Center (INTL · vendor-psirt · site)
Severity
high — CVSS 8.5
Published
2026-07-14
Exploitation
Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-53366

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.

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2026-53366coverage & exploitation statusNVD · CVE.org

Same CVEs, other sources

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

More from Microsoft Security Response Center