What is the CVSS score of CVE-2025-49711?

CVE-2025-49711 has a CVSS 3.1 base score of 7.8 (High). CVSS vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.1%.

Which versions of 365 Apps are affected by CVE-2025-49711?

CVE-2025-49711 is a use-after-free vulnerability in Microsoft Office Excel that permits local code execution by unauthorized attackers.. A patch is available.

How to fix or mitigate CVE-2025-49711?

Within 24 hours: Identify all systems running Microsoft Office Excel and verify current patch status. Within 7 days: Apply the vendor-released patch to all Excel installations across the organization; prioritize workstations with access to sensitive data. Within 30 days: Conduct vulnerability scan to confirm patch deployment success and review access logs for any suspicious Excel-related activity prior to patching.

365 Apps CVE-2025-49711

EUVD-2025-20628 HIGH

Use After Free (CWE-416)

2025-07-08 secure@microsoft.com

Denial Of Service Use After Free Memory Corruption Microsoft 365 Apps Excel Office Office Long Term Servicing Channel Office Online Server

7.8

CVSS 3.1

CVSS VectorNVD

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

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Analysis Updated

Apr 16, 2026 - 06:29 EUVD-patch-fix

executive_summary

Re-analysis Queued

Apr 16, 2026 - 05:29 backfill_euvd_patch

patch_released

Patch available

Apr 16, 2026 - 05:29 EUVD

16.99.25071321,16.0.10417.20027,16.0.5508.1001

EUVD ID Assigned

Mar 16, 2026 - 04:21 euvd

EUVD-2025-20628

Analysis Generated

Mar 16, 2026 - 04:21 vuln.today

CVE Published

Jul 08, 2025 - 17:15 nvd

HIGH 7.8

DescriptionNVD

Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code locally.

Analysis

Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code locally.

Technical ContextAI

A use-after-free vulnerability occurs when a program continues to use a pointer after the referenced memory has been freed, leading to undefined behavior. This vulnerability is classified as Use After Free (CWE-416).

RemediationAI

Use memory-safe languages. Implement proper object lifecycle management. Use static and dynamic analysis tools to detect UAF patterns.

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CVE-2025-49711 vulnerability details – vuln.today

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365 Apps CVE-2025-49711

CVSS VectorNVD

Lifecycle Timeline

DescriptionNVD

Analysis

Technical ContextAI

RemediationAI

More from same product – last 7 days

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External POC / Exploit Code