CVE-2026-45453

🔶 medium

Summary

Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.

CVSS Score

5.4

Medium

EPSS Score

0.4

Exploit Probability

Published Date

2026-06-09

First Seen: 2026-06-10

📊 Relative Risk Intelligence

This CVE is Lower Risk - more severe than 22.8% of all 329,456 vulnerabilities in our database.

#254,389

Below average severity

Severity Percentile

🎯 CISA SSVC Assessment Updated: Jun 9, 2026

🔍 Exploitation Status

None

No known exploits

⚙️ Automatable

Requires human interaction

💥 Technical Impact

Partial

Limited system impact

SSVC data provided by CISA

Last Modified 2026-06-10

Source NVD 🔗

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

CWE IDs (Weakness Types)

CWE-79

📦 Affected Products 3

Vendor	Product	Status	Affected Versions
microsoft	sharepoint_server	Affected	< 16.0.19725.20384
microsoft	sharepoint_server	Affected	v2016
microsoft	sharepoint_server	Affected	v2019

🔗 References 1

https://msrc.microsoft.com/update-guide/vulnerabilit...

Vendor Advisory

🔗 Related CVEs 6

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-2026-45454	🔶 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
CVE-2026-45456	⚠️ high	8.4	0.4	Access of resource using incompatible type ('type confusion') in Microsoft Office allows an unauthorized attacker to exe...	2026-06-09

These CVEs affect the same products