CVE-2026-102855

Buffer overflow

8.8 HIGH

Published13 Oct 2026

Description

Heap-based buffer overflow in Microsoft Office Visio allows an unauthorized attacker to execute code over a network.

CVSS 3.1 breakdown

Attack vectorNetwork

Attack complexityLow

Privileges requiredNone

User interactionRequired

ScopeUnchanged

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Remediation

No fixed version is recorded in the NVD data. Check the vendor advisory for the latest guidance.

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-102855

Related CVEs

Recent high-severity vulnerabilities sharing a weakness type.

Frequently asked

Is CVE-2026-102855 being actively exploited?

CVE-2026-102855 is not in the CISA KEV catalog.

How severe is CVE-2026-102855?

CVE-2026-102855 has a CVSS 3.1 base score of 8.8, rated high.

How do I fix CVE-2026-102855?

Apply the vendor's patch or advisory guidance, then verify no affected versions remain across your devices.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-102855 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.