Microsoft Office Online Server vulnerabilities
153 known vulnerabilities affecting microsoft/office_online_server.
Total CVEs
153
CISA KEV
1
actively exploited
Public exploits
4
Exploited in wild
3
Severity breakdown
CRITICAL1HIGH133MEDIUM17LOW2
Vulnerabilities
Page 6 of 8
CVE-2026-55044P3HIGHCVSS 7.8fixed in 16.0.10417.20175≥ 16.0.0.0, < 16.0.10417.201752026-07-14
CVE-2026-55044 [HIGH] CWE-125 CVE-2026-55044: Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to execute code locally
Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
nvd
CVE-2026-55136P3HIGHCVSS 7.8fixed in 16.0.10417.20175≥ 16.0.0.0, < 16.0.10417.201752026-07-14
CVE-2026-55136 [HIGH] CWE-822 CVE-2026-55136: Untrusted pointer dereference in Microsoft Office Excel allows an unauthorized attacker to execute c
Untrusted pointer dereference in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
nvd
CVE-2020-17123P3HIGHCVSS 7.8≥ 1.0.0, < publication2020-12-10
CVE-2020-17123 [HIGH] CVE-2020-17123: Microsoft Excel Remote Code Execution Vulnerability
Microsoft Excel Remote Code Execution Vulnerability
nvd
CVE-2025-53739P3HIGHCVSS 7.8≥ 16.0.0.0, < 16.0.10417.200342025-08-12
CVE-2025-53739 [HIGH] CWE-843 CVE-2025-53739: Access of resource using incompatible type ('type confusion') in Microsoft Office Excel allows an un
Access of resource using incompatible type ('type confusion') in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
nvd
CVE-2025-54902P3HIGHCVSS 7.8fixed in 16.0.10417.20047≥ 16.0.0.0, < 16.0.10417.200472025-09-09
CVE-2025-54902 [HIGH] CWE-125 CVE-2025-54902: Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to execute code locally
Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
nvd
CVE-2025-54898P3HIGHCVSS 7.8fixed in 16.0.10417.20047≥ 16.0.0.0, < 16.0.10417.200472025-09-09
CVE-2025-54898 [HIGH] CWE-125 CVE-2025-54898: Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to execute code locally
Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
nvd
CVE-2025-53759P3HIGHCVSS 7.8≥ 16.0.0.0, < 16.0.10417.200342025-08-12
CVE-2025-53759 [HIGH] CWE-908 CVE-2025-53759: Use of uninitialized resource in Microsoft Office Excel allows an unauthorized attacker to execute c
Use of uninitialized resource in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
nvd
CVE-2025-62200P3HIGHCVSS 7.8fixed in 16.0.10417.20068≥ 16.0.0.0, < 16.0.10417.200682025-11-11
CVE-2025-62200 [HIGH] CWE-822 CVE-2025-62200: Untrusted pointer dereference in Microsoft Office Excel allows an unauthorized attacker to execute c
Untrusted pointer dereference in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
nvd
CVE-2026-44820P3HIGHCVSS 7.8≥ 16.0.0.0, < 16.0.10417.201372026-06-09
CVE-2026-44820 [HIGH] CWE-125 CVE-2026-44820: Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to execute code locally
Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
nvd
CVE-2021-24069P3HIGHCVSS 7.8≥ https://aka.ms/OfficeSecurityReleases, < publication2021-02-25
CVE-2021-24069 [HIGH] CVE-2021-24069: Microsoft Excel Remote Code Execution Vulnerability
Microsoft Excel Remote Code Execution Vulnerability
nvd
CVE-2021-24067P3HIGHCVSS 7.8≥ https://aka.ms/OfficeSecurityReleases, < publication2021-02-25
CVE-2021-24067 [HIGH] CWE-416 CVE-2021-24067: Microsoft Excel Remote Code Execution Vulnerability
Microsoft Excel Remote Code Execution Vulnerability
nvd
CVE-2021-24070P3HIGHCVSS 7.8≥ https://aka.ms/OfficeSecurityReleases, < publication2021-02-25
CVE-2021-24070 [HIGH] CWE-416 CVE-2021-24070: Microsoft Excel Remote Code Execution Vulnerability
Microsoft Excel Remote Code Execution Vulnerability
nvd
CVE-2021-43256P3HIGHCVSS 7.8≥ https://aka.ms/OfficeSecurityReleases, < 16.0.10381.200012021-12-15
CVE-2021-43256 [HIGH] CVE-2021-43256: Microsoft Excel Remote Code Execution Vulnerability
Microsoft Excel Remote Code Execution Vulnerability
nvd
CVE-2025-21381P3HIGHCVSS 7.8fixed in 16.0.10416.20058≥ 16.0.0.0, < 16.0.10416.200582025-02-11
CVE-2025-21381 [HIGH] CWE-822 CVE-2025-21381: Microsoft Excel Remote Code Execution Vulnerability
Microsoft Excel Remote Code Execution Vulnerability
nvd
CVE-2025-21354P3HIGHCVSS 7.8fixed in 16.0.10416.20047≥ 16.0.0.0, < 16.0.10416.200472025-01-14
CVE-2025-21354 [HIGH] CWE-822 CVE-2025-21354: Microsoft Excel Remote Code Execution Vulnerability
Microsoft Excel Remote Code Execution Vulnerability
nvd
CVE-2025-21387P3HIGHCVSS 7.8fixed in 16.0.10416.20058≥ 16.0.0.0, < 16.0.10416.200582025-02-11
CVE-2025-21387 [HIGH] CWE-416 CVE-2025-21387: Microsoft Excel Remote Code Execution Vulnerability
Microsoft Excel Remote Code Execution Vulnerability
nvd
CVE-2025-21390P3HIGHCVSS 7.8fixed in 16.0.10416.20058≥ 16.0.0.0, < 16.0.10416.200582025-02-11
CVE-2025-21390 [HIGH] CWE-122 CVE-2025-21390: Microsoft Excel Remote Code Execution Vulnerability
Microsoft Excel Remote Code Execution Vulnerability
nvd
CVE-2025-21386P3HIGHCVSS 7.8fixed in 16.0.10416.20058≥ 16.0.0.0, < 16.0.10416.200582025-02-11
CVE-2025-21386 [HIGH] CWE-416 CVE-2025-21386: Microsoft Excel Remote Code Execution Vulnerability
Microsoft Excel Remote Code Execution Vulnerability
nvd
CVE-2025-21394P3HIGHCVSS 7.8fixed in 16.0.10416.20058≥ 16.0.0.0, < 16.0.10416.200582025-02-11
CVE-2025-21394 [HIGH] CWE-416 CVE-2025-21394: Microsoft Excel Remote Code Execution Vulnerability
Microsoft Excel Remote Code Execution Vulnerability
nvd
CVE-2025-26642P3HIGHCVSS 7.8≥ 16.0.0.0, < 16.0.10417.200032025-04-08
CVE-2025-26642 [HIGH] CWE-125 CVE-2025-26642: Out-of-bounds read in Microsoft Office allows an unauthorized attacker to execute code locally.
Out-of-bounds read in Microsoft Office allows an unauthorized attacker to execute code locally.
nvd