CVE-2026-44822

⚠️ high

🔍 Scan for this CVE

Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information over a network.

CVSS Score

8.2

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 79.6% of all 328,009 vulnerabilities in our database.

#66,785

Top 25% most severe

Severity Percentile

🔍 Exploitation Status

None

No known exploits

⚙️ Automatable

YES

Can be exploited automatically

💥 Technical Impact

Partial

Limited system impact

SSVC data provided by CISA

Last Modified 2026-06-11

Source NVD 🔗

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

CWE IDs (Weakness Types)

CWE-125

📦 Affected Products 5

Vendor	Product	Status	Affected Versions
microsoft	excel	Affected	v2016
microsoft	office_online_server	Affected	v-
microsoft	365_apps	Affected	v-
microsoft	office_2019	Affected	v-
microsoft	office_2024	Affected	v-

Vendor Advisory

CVE ID	Severity	CVSS	EPSS	Summary	Published
CVE-2026-44817	⚠️ high	7.8	0.3	Integer underflow (wrap or wraparound) in Microsoft Office Excel allows an unauthorized attacker to execute code locally...	2026-06-09
CVE-2026-44818	⚠️ high	7.0	0.2	Integer underflow (wrap or wraparound) in Microsoft Office Excel allows an unauthorized attacker to execute code locally...	2026-06-09
CVE-2026-44820	⚠️ high	7.8	0.3	Integer underflow (wrap or wraparound) in Microsoft Office Excel allows an unauthorized attacker to execute code locally...	2026-06-09
CVE-2026-45469	⚠️ high	7.8	0.3	Integer underflow (wrap or wraparound) in Microsoft Office Excel allows an unauthorized attacker to execute code locally...	2026-06-09
CVE-2026-44819	⚠️ high	7.8	0.4	Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code locally.	2026-06-09
CVE-2026-44821	🔶 medium	5.5	0.4	Out-of-bounds read in Microsoft Office allows an unauthorized attacker to disclose information locally.	2026-06-09

These CVEs affect the same products