msrc_cve-2025-49756
Vulnerability from csaf_microsoft
Published
2025-07-08 07:00
Modified
2025-07-08 07:00
Summary
Office Developer Platform Security Feature Bypass Vulnerability
Notes
Additional Resources
To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle
Disclaimer
The information provided in the Microsoft Knowledge Base is provided \"as is\" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.
Customer Action
Required. The vulnerability documented by this CVE requires customer action to resolve.
{ "document": { "acknowledgments": [ { "names": [ "Anonymous with Microsoft" ] } ], "aggregate_severity": { "namespace": "https://www.microsoft.com/en-us/msrc/security-update-severity-rating-system", "text": "Important" }, "category": "csaf_security_advisory", "csaf_version": "2.0", "distribution": { "text": "Public", "tlp": { "label": "WHITE", "url": "https://www.first.org/tlp/" } }, "lang": "en-US", "notes": [ { "category": "general", "text": "To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle", "title": "Additional Resources" }, { "category": "legal_disclaimer", "text": "The information provided in the Microsoft Knowledge Base is provided \\\"as is\\\" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.", "title": "Disclaimer" }, { "category": "general", "text": "Required. The vulnerability documented by this CVE requires customer action to resolve.", "title": "Customer Action" } ], "publisher": { "category": "vendor", "contact_details": "secure@microsoft.com", "name": "Microsoft Security Response Center", "namespace": "https://msrc.microsoft.com" }, "references": [ { "category": "self", "summary": "CVE-2025-49756 Office Developer Platform Security Feature Bypass Vulnerability - HTML", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-49756" }, { "category": "self", "summary": "CVE-2025-49756 Office Developer Platform Security Feature Bypass Vulnerability - CSAF", "url": "https://msrc.microsoft.com/csaf/advisories/2025/msrc_cve-2025-49756.json" }, { "category": "external", "summary": "Microsoft Exploitability Index", "url": "https://www.microsoft.com/en-us/msrc/exploitability-index?rtc=1" }, { "category": "external", "summary": "Microsoft Support Lifecycle", "url": "https://support.microsoft.com/lifecycle" }, { "category": "external", "summary": "Common Vulnerability Scoring System", "url": "https://www.first.org/cvss" } ], "title": "Office Developer Platform Security Feature Bypass Vulnerability", "tracking": { "current_release_date": "2025-07-08T07:00:00.000Z", "generator": { "date": "2025-08-18T17:50:23.473Z", "engine": { "name": "MSRC Generator", "version": "1.0" } }, "id": "msrc_CVE-2025-49756", "initial_release_date": "2025-07-08T07:00:00.000Z", "revision_history": [ { "date": "2025-07-08T07:00:00.000Z", "legacy_version": "1", "number": "1", "summary": "Information published." } ], "status": "final", "version": "1" } }, "product_tree": { "branches": [ { "branches": [ { "category": "product_version_range", "name": "\u003chttps://aka.ms/OfficeSecurityReleases", "product": { "name": "Microsoft 365 Apps for Enterprise for 32-bit Systems \u003chttps://aka.ms/OfficeSecurityReleases", "product_id": "2" } }, { "category": "product_version", "name": "https://aka.ms/OfficeSecurityReleases", "product": { "name": "Microsoft 365 Apps for Enterprise for 32-bit Systems https://aka.ms/OfficeSecurityReleases", "product_id": "11762" } } ], "category": "product_name", "name": "Microsoft 365 Apps for Enterprise for 32-bit Systems" }, { "branches": [ { "category": "product_version_range", "name": "\u003chttps://aka.ms/OfficeSecurityReleases", "product": { "name": "Microsoft 365 Apps for Enterprise for 64-bit Systems \u003chttps://aka.ms/OfficeSecurityReleases", "product_id": "1" } }, { "category": "product_version", "name": "https://aka.ms/OfficeSecurityReleases", "product": { "name": "Microsoft 365 Apps for Enterprise for 64-bit Systems https://aka.ms/OfficeSecurityReleases", "product_id": "11763" } } ], "category": "product_name", "name": "Microsoft 365 Apps for Enterprise for 64-bit Systems" } ] }, "vulnerabilities": [ { "cve": "CVE-2025-49756", "cwe": { "id": "CWE-327", "name": "Use of a Broken or Risky Cryptographic Algorithm" }, "notes": [ { "category": "general", "text": "Microsoft", "title": "Assigning CNA" }, { "category": "faq", "text": "To successfully exploit this vulnerability, an attacker would need to gain elevated privileges enabling them to perform file operations in directories they would not normally be able to access or perform.", "title": "According to the CVSS metric, the attack complexity is high (AC:H). What does that mean for this vulnerability?" }, { "category": "faq", "text": "The attack itself is carried out locally by a user with authentication to the targeted system. An authenticated attacker could exploit the vulnerability by convincing a victim, through social engineering, to download and open a specially crafted file from a website which could lead to a local attack on the victim computer.", "title": "According to the CVSS metric, the attack vector is local (AV:L), privileges are required (PR:L) and user interaction is required (UI:R). How could an attacker exploit this security feature bypass vulnerability?" }, { "category": "faq", "text": "An attacker is only able to compromise files that they were allowed access to as part of their initial privilege but cannot affect the availability of the browser.", "title": "According to the CVSS metric, Confidentiality and Integrity are rated as Low and Availability is None (C:L, I:L, A:N). What does that mean for this vulnerability?" }, { "category": "faq", "text": "To exploit this vulnerability, an attacker would first have to log on to the system. An attacker could then run a specially crafted application that could exploit the vulnerability and take control of an affected system.\nAdditionally, an attacker could convince a local user to open a malicious file. The attacker would have to convince the user to click a link, typically by way of an enticement in an email or instant message, and then convince them to open the specially crafted file.", "title": "How could an attacker exploit this vulnerability?" }, { "category": "faq", "text": "An attacker who successfully exploited this vulnerability could bypass the Office Visual Basic for Applications (VBA) signature scheme.", "title": "What kind of security feature could be bypassed by successfully exploiting this vulnerability?" }, { "category": "faq", "text": "No, the Preview Pane is not an attack vector.", "title": "Is the Preview Pane an attack vector for this vulnerability?" } ], "product_status": { "fixed": [ "11762", "11763" ], "known_affected": [ "1", "2" ] }, "references": [ { "category": "self", "summary": "CVE-2025-49756 Office Developer Platform Security Feature Bypass Vulnerability - HTML", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-49756" }, { "category": "self", "summary": "CVE-2025-49756 Office Developer Platform Security Feature Bypass Vulnerability - CSAF", "url": "https://msrc.microsoft.com/csaf/advisories/2025/msrc_cve-2025-49756.json" } ], "remediations": [ { "category": "vendor_fix", "date": "2025-07-08T07:00:00.000Z", "details": "https://aka.ms/OfficeSecurityReleases:Security Update:https://docs.microsoft.com/en-us/officeupdates/office365-proplus-security-updates", "product_ids": [ "2", "1" ], "url": "https://docs.microsoft.com/en-us/officeupdates/office365-proplus-security-updates" } ], "scores": [ { "cvss_v3": { "attackComplexity": "HIGH", "attackVector": "LOCAL", "availabilityImpact": "NONE", "baseScore": 3.3, "baseSeverity": "LOW", "confidentialityImpact": "LOW", "environmentalsScore": 0.0, "exploitCodeMaturity": "UNPROVEN", "integrityImpact": "LOW", "privilegesRequired": "LOW", "remediationLevel": "OFFICIAL_FIX", "reportConfidence": "CONFIRMED", "scope": "UNCHANGED", "temporalScore": 2.9, "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C", "version": "3.1" }, "products": [ "1", "2" ] } ], "threats": [ { "category": "impact", "details": "Security Feature Bypass" }, { "category": "exploit_status", "details": "Publicly Disclosed:No;Exploited:No;Latest Software Release:Exploitation Less Likely" } ], "title": "Office Developer Platform Security Feature Bypass Vulnerability" } ] }
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Sightings
Author | Source | Type | Date |
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Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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