Microsoft Office Word out-of-bounds

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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2.7$0-$5k0.00

Summaryinfo

A vulnerability marked as problematic has been reported in Microsoft Office. This affects an unknown function of the component Word. This manipulation causes out-of-bounds. This vulnerability appears as CVE-2026-63530. The attack requires local access. There is no available exploit.

Detailsinfo

A vulnerability classified as problematic was found in Microsoft Office (the affected version is unknown). Affected by this vulnerability is an unknown code of the component Word. The manipulation with an unknown input leads to a out-of-bounds vulnerability. The CWE definition for the vulnerability is CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. As an impact it is known to affect confidentiality. The summary by CVE is:

Out-of-bounds read in Microsoft Office Word allows an unauthorized attacker to disclose information locally.

The advisory is shared at msrc.microsoft.com. This vulnerability is known as CVE-2026-63530 since 07/17/2026. The exploitation appears to be easy. An attack has to be approached locally. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 334624 (Security Updates for Microsoft Word Products (August 2026)), which helps to determine the existence of the flaw in a target environment.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at Tenable (334624). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 2.8
VulDB Meta Temp Score: 2.7

VulDB Base Score: 2.8
VulDB Temp Score: 2.7
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Out-of-bounds
CWE: CWE-125 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 334624
Nessus Name: Security Updates for Microsoft Word Products (August 2026)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔒

Timelineinfo

07/17/2026 CVE reserved
08/11/2026 +25 days Advisory disclosed
08/11/2026 +0 days VulDB entry created
08/12/2026 +1 days VulDB entry last update

Sourcesinfo

Vendor: microsoft.com

Advisory: msrc.microsoft.com
Status: Confirmed

CVE: CVE-2026-63530 (🔒)
GCVE (CVE): GCVE-0-2026-63530
GCVE (VulDB): GCVE-100-388693

Entryinfo

Created: 08/11/2026 23:31
Updated: 08/12/2026 05:50
Changes: 08/11/2026 23:31 (53), 08/12/2026 05:50 (2)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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