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CVE-2026-44821

🔶 medium
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Summary

Out-of-bounds read in Microsoft Office allows an unauthorized attacker to disclose information locally.

CVSS Score
5.5
Medium
EPSS Score
0.5
Exploit Probability
Published Date
2026-06-09
First Seen: 2026-06-10
📊 Relative Risk Intelligence

This CVE is Lower Risk - more severe than 32.5% of all 329,456 vulnerabilities in our database.

#222,322
Below average severity
Severity Percentile
🎯 CISA SSVC Assessment Updated: Jun 10, 2026
🔍 Exploitation Status
None
No known exploits
⚙️ Automatable
NO
Requires human interaction
💥 Technical Impact
Partial
Limited system impact
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:R/S:U/C:H/I:N/A:N
CWE IDs (Weakness Types)
CWE-125

📦 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-

🔗 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-2026-44824 ⚠️ 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
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