CVE-2025-10263: ARM: CVE-2025-10263 Completion of affected memory accesses might not be guaranteed by completion of a TLBI [kernel]

criticalCVSS 9.3CVE-2025-10263

No cwe for this issue in Windows Kernel allows an unauthorized attacker to elevate privileges locally.

CSIRTS triage

vendor: Microsoft product: Windows Kernel Privilege escalation

What: This vulnerability allows an unauthorized attacker to elevate privileges locally.
Who is affected: Deployments of the Windows Kernel.
Urgency: Remediation is critical due to the high severity rating and potential for exploitation.
Action: Patch the Windows Kernel for CVE-2025-10263.

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

⚡ Watch Windows Kernel

Get an email when a new Windows Kernel advisory drops — max one per day, one-click unsubscribe.

Details

Source: Microsoft Security Response Center (INTL · vendor-psirt · site)
Severity: critical — CVSS 9.3
Published: 2026-06-09
Exploitation: Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-10263

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-2025-102630.53% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 41% of all scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2025-10263	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

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

unknownMultiple vulnerabilities in Red Hat Linux kernel (July 10, 2026)cert-fr-avis
medium[UPDATE] [medium] Linux Kernel: Multiple vulnerabilitiescert-bund
unknownDebian Linux Kernel Multiple Vulnerabilitieshkcert
unknownMultiple vulnerabilities in Red Hat Linux kernel (July 3, 2026)cert-fr-avis
unknownSUSE Linux Kernel Multiple Vulnerabilitieshkcert
unknownRedHat Linux Kernel Multiple Vulnerabilitieshkcert

Recent advisories for ARM

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.

lowCVE-2026-53763: OP-TEE is a Trusted Execution Environment (TEE) designed as companion to a non-secure Linux ke…nvd · 2026-07-06
mediumCVE-2026-44362: OP-TEE is a Trusted Execution Environment (TEE) designed as companion to a non-secure Linux ke…nvd · 2026-07-06
lowCVE-2026-42546: OP-TEE is a Trusted Execution Environment (TEE) designed as companion to a non-secure Linux ke…nvd · 2026-07-06
lowCVE-2026-41516: OP-TEE is a Trusted Execution Environment (TEE) designed as companion to a non-secure Linux ke…nvd · 2026-07-06
lowCVE-2026-41515: OP-TEE is a Trusted Execution Environment (TEE) designed as companion to a non-secure Linux ke…nvd · 2026-07-06
lowCVE-2026-41514: OP-TEE is a Trusted Execution Environment (TEE) designed as companion to a non-secure Linux ke…nvd · 2026-07-06