CVE-2026-53362: ipv6: account for fraggap on the paged allocation path

highpublic exploitCVSS 7.3CVE-2026-53362

CSIRTS triage

Other

What: This vulnerability relates to the handling of fraggap on the paged allocation path in IPv6.
Who is affected: Systems utilizing the affected IPv6 implementation are at risk.
Urgency: This is a high severity issue with a CVSS score of 7.3, indicating urgent remediation is recommended.
Action: Apply relevant patches or updates as they become available.

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 7.3
Published: 2026-07-14
Exploitation: Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-53362

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-2026-533620.27% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 19% of all EPSS-scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-53362	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

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

medium[NEW] [medium] Linux Kernel: Multiple vulnerabilitiescert-bund
unknownMultiple vulnerabilities in Debian LTS Linux kernel (July 31, 2026)cert-fr-avis
unknownMultiple vulnerabilities in Debian LTS Linux kernel (July 24, 2026)cert-fr-avis
unknownMultiple vulnerabilities in the SUSE Linux kernel (July 17, 2026)cert-fr-avis
unknownMultiple vulnerabilities in Microsoft Azure Linux (July 09, 2026)cert-fr-avis
unknownDSA-6381-1 linux - security updatedebian
unknownCVE-2026-53362: In the Linux kernel, the following vulnerability has been resolved: ipv6: account for fraggap …nvd

Recent advisories for ipv6

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.

highCVE-2026-75975: fast-uri is a URI parser for Node.js. Its custom parser for bracketed IPv6 literals does not v…nvd · 2026-08-24
highCVE-2026-74630: In the Linux kernel, the following vulnerability has been resolved: ipv6: prevent in6_dev_get(…nvd · 2026-08-22
highCVE-2026-74598: In the Linux kernel, the following vulnerability has been resolved: ipv6: fix Route Informatio…nvd · 2026-08-22
criticalCVE-2026-74597: In the Linux kernel, the following vulnerability has been resolved: ip6_tunnel: clear skb2->cb…nvd · 2026-08-22
criticalCVE-2026-74581: In the Linux kernel, the following vulnerability has been resolved: net: ipv6: clear suppresse…nvd · 2026-08-21
unknownIssue with FreeRTOS-Plus-TCP - IPv6 Router Advertisement Memory Safety Issuesaws · 2026-08-20