Microsoft Office Out-of-Box Experience cross site scripting

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
6.8$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic was found in Microsoft Office Out-of-Box Experience. This affects an unknown function. The manipulation results in cross site scripting. This vulnerability is cataloged as CVE-2025-64677. The attack may be launched remotely. There is no exploit available. This product is available as a managed service. Users are not able to maintain vulnerability countermeasures themselves.

Detailsinfo

A vulnerability classified as problematic has been found in Microsoft Office Out-of-Box Experience (version unknown). Affected is an unknown function. The manipulation with an unknown input leads to a cross site scripting vulnerability. CWE is classifying the issue as CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. This is going to have an impact on integrity. CVE summarizes:

Improper neutralization of input during web page generation ('cross-site scripting') in Office Out-of-Box Experience allows an unauthorized attacker to perform spoofing over a network.

The advisory is available at msrc.microsoft.com. This vulnerability is traded as CVE-2025-64677 since 11/07/2025. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Successful exploitation requires user interaction by the victim. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 01/16/2026). This vulnerability is assigned to T1059.007 by the MITRE ATT&CK project.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2025-204412). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

Vendor

Name

License

Managed Service

  • yes

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.9
VulDB Meta Temp Score: 6.8

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 8.2
NVD Vector: 🔒

CNA Base Score: 8.2
CNA Vector (microsoft): 🔒

CVSSv2info

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

Exploitinginfo

Class: Cross site scripting
CWE: CWE-79 / CWE-94 / CWE-74
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

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

Countermeasuresinfo

Status: 🔍

0-Day Time: 🔒

Timelineinfo

11/07/2025 CVE reserved
12/19/2025 +42 days Advisory disclosed
12/19/2025 +0 days VulDB entry created
01/16/2026 +28 days VulDB entry last update

Sourcesinfo

Vendor: microsoft.com

Advisory: msrc.microsoft.com
Status: Confirmed

CVE: CVE-2025-64677 (🔒)
GCVE (CVE): GCVE-0-2025-64677
GCVE (VulDB): GCVE-100-337554
EUVD: 🔒

Entryinfo

Created: 12/19/2025 08:17
Updated: 01/16/2026 19:42
Changes: 12/19/2025 08:17 (62), 01/15/2026 00:55 (1), 01/16/2026 19:42 (11)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Discussion

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