Microsoft SharePoint is widely used enterprise software; authenticated RCE risk can impact many organizations.
CVE-2026-108452
Authenticated path traversal in Microsoft SharePoint enabling remote code execution
Is CVE-2026-108452 being exploited?
Not confirmed. CVE-2026-108452 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.63% probability of exploitation in the next 30 days.
How severe is CVE-2026-108452?
CVE-2026-108452 is rated High with a CVSS score of 8.8. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-108452?
Yes. A fix has been recorded for CVE-2026-108452. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-108452 affect?
CVE-2026-108452 affects Microsoft Office SharePoint, Microsoft SharePoint Server (on-prem). Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-108452?
Apply Microsoft security update immediately; restrict SharePoint access and monitor logs.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Authenticated path-traversal allows remote code execution via crafted paths; attacker can write/execute files and run arbitrary code on SharePoint server.
Immediate action required
- affected>= 16.0.0 and < 16.0.20326.20190
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.