CVE-2025-62558
published 2025-12-09CVE-2025-62558: Use after free in Microsoft Office Word allows an unauthorized attacker to execute code locally.
PriorityP348high7.8CVSS 3.1
AVLACLPRNUIRSUCHIHAH
EPSS
0.60%
45.0th percentile
Use after free in Microsoft Office Word allows an unauthorized attacker to execute code locally.
Affected
28 ranges· showing 25
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| microsoft | microsoft_365_apps_for_enterprise | >= 16.0.1 < https://aka.ms/OfficeSecurityReleases | https://aka.ms/OfficeSecurityReleases |
| microsoft | microsoft_office_2019 | >= 19.0.0 < https://aka.ms/OfficeSecurityReleases | https://aka.ms/OfficeSecurityReleases |
| microsoft | microsoft_office_ltsc_2021 | >= 16.0.1 < https://aka.ms/OfficeSecurityReleases | https://aka.ms/OfficeSecurityReleases |
| microsoft | microsoft_office_ltsc_2024 | >= 16.0.0 < https://aka.ms/OfficeSecurityReleases | https://aka.ms/OfficeSecurityReleases |
| microsoft | microsoft_office_ltsc_for_mac_2021 | >= 16.0.1 < 16.104.25121423 | 16.104.25121423 |
| microsoft | microsoft_office_ltsc_for_mac_2024 | >= 16.0.0 < 16.104.25121423 | 16.104.25121423 |
| microsoft | microsoft_sharepoint_enterprise_server_2016 | >= 16.0.0 < 16.0.5530.1000 | 16.0.5530.1000 |
| microsoft | microsoft_sharepoint_server_2019 | >= 16.0.0 < 16.0.10417.20075 | 16.0.10417.20075 |
| microsoft | microsoft_word_2016 | >= 16.0.1 < 16.0.5530.1000 | 16.0.5530.1000 |
| microsoft | office | — | — |
| microsoft | office_long_term_servicing_channel | — | — |
| microsoft | office_long_term_servicing_channel | — | — |
| microsoft | sharepoint_server | — | — |
| microsoft | sharepoint_server | — | — |
| microsoft | word | — | — |
| msrc | microsoft_365_apps_for_enterprise_for_32-bit_systems | — | — |
| msrc | microsoft_365_apps_for_enterprise_for_64-bit_systems | — | — |
| msrc | microsoft_office_2019_for_32-bit_editions | — | — |
| msrc | microsoft_office_2019_for_64-bit_editions | — | — |
| msrc | microsoft_office_ltsc_2021_for_32-bit_editions | — | — |
| msrc | microsoft_office_ltsc_2021_for_64-bit_editions | — | — |
| msrc | microsoft_office_ltsc_2024_for_32-bit_editions | — | — |
| msrc | microsoft_office_ltsc_2024_for_64-bit_editions | — | — |
| msrc | microsoft_office_ltsc_for_mac_2021 | — | — |
| msrc | microsoft_office_ltsc_for_mac_2024 | — | — |
CVSS provenance
nvdv3.17.8HIGHCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
vendor_msrc7.8HIGH
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Microsoft
Microsoft Word Remote Code Execution Vulnerability
vendor_msrc·2025-12-09·CVSS 7.8
CVE-2025-62558 [HIGH] CWE-416 Microsoft Word Remote Code Execution Vulnerability
Microsoft Word Remote Code Execution Vulnerability
Description: Use after free in Microsoft Office Word allows an unauthorized attacker to execute code locally.
FAQ: According to the CVSS metric, the attack vector is local (AV:L). Why does the CVE title indicate that this is a remote code execution?
The word Remote in the title refers to the location of the attacker. This type of exploit is sometimes referred to as Arbitrary Code Execution (ACE). The attack itself is carried out locally. This means an attacker or victim needs to execute code from the local machine to exploit the vulnerability.
FAQ: According to the CVSS metric, user interaction is required (UI:R). What interaction would the user have to do?
An attacker must send a user a malicious Office file and convince them to open i
GHSA
GHSA-85wj-8hq2-4fhh: Use after free in Microsoft Office Word allows an unauthorized attacker to execute code locally
ghsa_unreviewed·2025-12-09
CVE-2025-62558 [HIGH] CWE-416 GHSA-85wj-8hq2-4fhh: Use after free in Microsoft Office Word allows an unauthorized attacker to execute code locally
Use after free in Microsoft Office Word allows an unauthorized attacker to execute code locally.
No detection rules found.
No public exploits indexed.
Bleepingcomputer
Microsoft December 2025 Patch Tuesday fixes 3 zero-days, 57 flaws
blogs_bleepingcomputer·2025-12-09·CVSS 7.8
[HIGH] Microsoft December 2025 Patch Tuesday fixes 3 zero-days, 57 flaws
## Microsoft December 2025 Patch Tuesday fixes 3 zero-days, 57 flaws
## Lawrence Abrams
28 Elevation of Privilege Vulnerabilities
19 Remote Code Execution Vulnerabilities
4 Information Disclosure Vulnerabilities
3 Denial of Service Vulnerabilities
2 Spoofing Vulnerabilities
When BleepingComputer reports on Patch Tuesday security updates, we only count those released by Microsoft today. Therefore, the number of flaws does not include Microsoft Edge (15 flaws) and Mariner vulnerabilities fixed earlier this month.
To learn more about the non-security updates released today, you can review our dedicated articles on the Windows 11 KB5072033 & KB5071417 cumulative updates .
If you're facing delays, blind spots, or prioritization issues with Patch Tuesday updates, our recent webinar with
Wiz
CVE-2025-62558 Impact, Exploitability, and Mitigation Steps | Wiz
blogs_wiz·CVSS 7.8
CVE-2025-62558 [HIGH] CVE-2025-62558 Impact, Exploitability, and Mitigation Steps | Wiz
## CVE-2025-62558 :
vulnerability analysis and mitigation
Use after free in Microsoft Office Word allows an unauthorized attacker to execute code locally.
Source : NVD
## 7.8
Score
Published December 9, 2025
Severity HIGH
CNA Score 7.8
Has Public Exploit No
Has CISA KEV Exploit No
CISA KEV Release Date N/A
CISA KEV Due Date N/A
Exploitation Probability Percentile (EPSS) 29.5
Exploitation Probability (EPSS) 0.1
Affected packages and libraries
word
Sources
NVD
Nix Severity HIGH No Fix Added at: Dec 11, 2025
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2025-12-09
Published