Known vulnerabilities in Office Online Server

Vendor: Microsoft
Software: Office Online Server
Software CPE: cpe:2.3:a:microsoft:office_online_server:*:*:*:*:*:*:*:*
Website: https://www.microsoft.com
Total vulnerabilities: 225
Public exploits: 7
Known exploited (KEV): 1

Breakdown by Severity Chart

Severity distribution of vulnerabilities affecting Office Online Server Office Online Server is affected by 225 known vulnerabilities: 1 critical, 173 high, 31 medium, 20 low Critical High Medium Low

Vulnerabilities (225)

Vulnerability CWE-ID CSH Severity Public Exploit KEV First fixed release Published Bulletins
#VU148304 - Out-of-bounds read
CVE-2026-81956		 CWE-125 High
No
No
 16.0.10417.20207 09.09.2026 SB2026090916
#VU148295 - Heap-based Buffer Overflow
CVE-2026-81947		 CWE-122 High
No
No
 16.0.10417.20207 09.09.2026 SB2026090916
#VU148294 - Type confusion
CVE-2026-81401		 CWE-843 Medium
No
No
 16.0.10417.20207 09.09.2026 SB2026090916
#VU148283 - Out-of-bounds read
CVE-2026-81390		 CWE-125 Medium
No
No
 16.0.10417.20207 09.09.2026 SB2026090916
#VU138207 - Integer underflow
CVE-2026-55039		 CWE-191 High
No
No
 16.0.10417.20175 17.07.2026 SB2026071713
#VU138204 - Heap-based Buffer Overflow
CVE-2026-55029		 CWE-122 High
No
No
 16.0.10417.20175 17.07.2026 SB2026071713
#VU138202 - Integer overflow
CVE-2026-55048		 CWE-190 High
No
No
 16.0.10417.20175 17.07.2026 SB2026071713
#VU138200 - Out-of-bounds read
CVE-2026-55031		 CWE-125 High
No
No
 16.0.10417.20175 17.07.2026 SB2026071713
#VU138198 - Type confusion
CVE-2026-55025		 CWE-843 High
No
No
 16.0.10417.20175 17.07.2026 SB2026071713
#VU138195 - Out-of-bounds read
CVE-2026-55046		 CWE-125 Low
No
No
 16.0.10417.20175 17.07.2026 SB2026071713
#VU138193 - Out-of-bounds read
CVE-2026-50408		 CWE-125 Low
No
No
 16.0.10417.20175 17.07.2026 SB2026071713
#VU138192 - Type confusion
CVE-2026-55024		 CWE-843 High
No
No
 16.0.10417.20175 17.07.2026 SB2026071713
#VU138187 - Untrusted Pointer Dereference
CVE-2026-48580		 CWE-822 Low
No
No
 16.0.10417.20175 17.07.2026 SB2026071713
#VU138186 - Use After Free
CVE-2026-47642		 CWE-416 High
No
No
 16.0.10417.20175 17.07.2026 SB2026071713
#VU138184 - Heap-based Buffer Overflow
CVE-2026-58618		 CWE-122 High
No
No
 16.0.10417.20175 17.07.2026 SB2026071713
#VU138182 - Use After Free
CVE-2026-55948		 CWE-416 High
No
No
 16.0.10417.20175 17.07.2026 SB2026071713
#VU138181 - Stack-based buffer overflow
CVE-2026-55899		 CWE-121 High
No
No
 16.0.10417.20175 17.07.2026 SB2026071713
#VU138180 - Out-of-bounds read
CVE-2026-54988		 CWE-125 Low
No
No
 16.0.10417.20175 17.07.2026 SB2026071713
#VU138179 - Heap-based Buffer Overflow
CVE-2026-50678		 CWE-122 Low
No
No
 16.0.10417.20175 17.07.2026 SB2026071713
#VU138178 - Heap-based Buffer Overflow
CVE-2026-50675		 CWE-122 High
No
No
 16.0.10417.20175 17.07.2026 SB2026071713


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