CVE-2026-45456

⚠️ high

Access of resource using incompatible type ('type confusion') in Microsoft Office allows an unauthorized attacker to execute code locally.

CVSS Score

8.4

High

EPSS Score

0.4

Exploit Probability

Published Date

2026-06-09

First Seen: 2026-06-10

This CVE is High Risk - more severe than 80.3% of all 329,456 vulnerabilities in our database.

#64,947

Top 25% most severe

Severity Percentile

🔍 Exploitation Status

None

No known exploits

⚙️ Automatable

Requires human interaction

💥 Technical Impact

Total

Complete system compromise possible

SSVC data provided by CISA

Last Modified 2026-06-19

Source NVD 🔗

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

CWE IDs (Weakness Types)

CWE-843

📦 Affected Products 7

Vendor	Product	Status	Affected Versions
microsoft	sharepoint_server	Affected	< 16.0.19725.20384
microsoft	sharepoint_server	Affected	v2016
microsoft	sharepoint_server	Affected	v2019
microsoft	365_apps	Affected	v-
microsoft	office_2019	Affected	v-
microsoft	office_2016	Affected	v-
microsoft	office_2024	Affected	v-

Vendor Advisory

CVE ID	Severity	CVSS	EPSS	Summary	Published
CVE-2026-33113	🔶 medium	5.4	0.4	Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allo...	2026-06-09
CVE-2026-44819	⚠️ high	7.8	0.5	Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code locally.	2026-06-09
CVE-2026-44821	🔶 medium	5.5	0.5	Out-of-bounds read in Microsoft Office allows an unauthorized attacker to disclose information locally.	2026-06-09
CVE-2026-44824	⚠️ high	7.8	0.5	Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code locally.	2026-06-09
CVE-2026-45453	🔶 medium	5.4	0.4	Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allo...	2026-06-09
CVE-2026-45454	🔶 medium	6.5	1.0	Improper limitation of a pathname to a restricted directory ('path traversal') in Microsoft Office SharePoint allows an ...	2026-06-09

These CVEs affect the same products