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CVE-2026-23558

grant table v2 race in status page mapping

The adjustments made for XSA-379 as well as those subsequently becoming XSA-387 still left a race window, when a HVM or PVH guest does a grant table version change from v2 to v1 in parallel with mapping the status page(s) via XENMEM_add_to_physmap. Some of the status pages may then be freed while mappings of them would still be inserted into the guest's secondary (P2M) page tables.

CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed
Vendors
Xen
Products
Xen
CVE-2026-8953

Sandbox escape due to use-after-free in the Disability Access APIs component

Sandbox escape due to use-after-free in the Disability Access APIs component. This vulnerability was fixed in Firefox 151, Firefox ESR 115.36, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.

CVSS 3.1 · 9.6 Critical EPSS < 1% KEV · Not listed
Vendors
Products
CVE-2022-41104

Microsoft Excel Security Feature Bypass Vulnerability

Microsoft Excel Security Feature Bypass Vulnerability

CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed
Vendors
Products
365 Apps Excel Office and 1 more
CVE-2026-42832

Microsoft Office Spoofing Vulnerability

Improper access control in Microsoft Office allows an unauthorized attacker to perform spoofing locally.

CVSS 3.1 · 7.7 High EPSS < 1% KEV · Not listed
Vendors
Products
CVE-2022-21840

Microsoft Office Remote Code Execution Vulnerability

Microsoft Office Remote Code Execution Vulnerability

CVSS 3.1 · 8.8 High EPSS 3.3% KEV · Not listed
Vendors
Products
365 Apps Excel Office and 7 more