CVE-2026-53354: arm64: errata: Mitigate TLBI errata on various Arm CPUs

highCVSS 7.1CVE-2026-53354

CSIRTS triage

Other

What: This vulnerability involves mitigating TLBI errata on various Arm CPUs.
Who is affected: Affected systems using the specified Arm CPUs are impacted.
Urgency: Remediation is urgent due to the high severity.
Action: Apply the relevant updates for affected Arm CPUs.

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 7.1
Published: 2026-07-02
Exploitation: Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-53354

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-2026-533540.18% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 8% of all scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-53354	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

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

Recent advisories for arm64

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.

unknownCVE-2026-53354: In the Linux kernel, the following vulnerability has been resolved: arm64: errata: Mitigate TL…nvd · 2026-07-01
unknownCVE-2026-53346: In the Linux kernel, the following vulnerability has been resolved: rust: arm64: set uwtable l…nvd · 2026-07-01
unknownCVE-2026-53342: In the Linux kernel, the following vulnerability has been resolved: arm64: mm: call pagetable …nvd · 2026-07-01
unknownCVE-2026-53288: In the Linux kernel, the following vulnerability has been resolved: arm64: Reserve an extra pa…nvd · 2026-06-26
mediumCVE-2026-6330: The ML-KEM ARM64 NEON ciphertext comparison only compares half of the input, breaking the Fujis…nvd · 2026-06-25
criticalCVE-2026-53036: bpf, arm64: Fix off-by-one in check_imm signed range checkmsrc · 2026-06-09