{ "document": { "acknowledgments": [ { "names": [ "Gal Weizman (weizmangal@gmail.com / https://x.com/weizmangal)" ] } ], "aggregate_severity": { "namespace": "https://www.microsoft.com/en-us/msrc/security-update-severity-rating-system", "text": "Moderate" }, "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-2026-55945 Microsoft Edge (Chromium-based) Information Disclosure Vulnerability - HTML", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55945" }, { "category": "self", "summary": "CVE-2026-55945 Microsoft Edge (Chromium-based) Information Disclosure Vulnerability - CSAF", "url": "https://msrc.microsoft.com/csaf/advisories/2026/msrc_cve-2026-55945.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": "Microsoft Edge (Chromium-based) Information Disclosure Vulnerability", "tracking": { "current_release_date": "2026-07-03T07:00:00.000Z", "generator": { "date": "2026-07-03T21:25:59.265Z", "engine": { "name": "MSRC Generator", "version": "1.0" } }, "id": "msrc_CVE-2026-55945", "initial_release_date": "2026-07-02T07:00:00.000Z", "revision_history": [ { "date": "2026-07-03T07:00:00.000Z", "legacy_version": "1", "number": "1", "summary": "Information published." } ], "status": "final", "version": "1" } }, "product_tree": { "branches": [ { "branches": [ { "category": "product_version_range", "name": "<150.0.4078.48", "product": { "name": "Microsoft Edge (Chromium-based) <150.0.4078.48", "product_id": "1" } }, { "category": "product_version", "name": "150.0.4078.48", "product": { "name": "Microsoft Edge (Chromium-based) 150.0.4078.48", "product_id": "11655" } } ], "category": "product_name", "name": "Microsoft Edge (Chromium-based)" } ] }, "vulnerabilities": [ { "cve": "CVE-2026-55945", "cwe": { "id": "CWE-362", "name": "Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')" }, "notes": [ { "category": "general", "text": "Microsoft", "title": "Assigning CNA" }, { "category": "faq", "text": "Successful exploitation of this vulnerability requires an attacker to craft deceptive or invisible form elements and user to perform two sequential taps.", "title": "According to the CVSS metric, the attack complexity is high (AC:H). What does that mean for this vulnerability?" }, { "category": "faq", "text": "150.0.4078.48: 150.0.4078.48, 07/03/2026: 07/03/2026, 150.0.7871.47: 150.0.7871.47", "title": "What is the version information for this release?" }, { "category": "faq", "text": "The type of information that could be disclosed if an attacker successfully exploited this vulnerability is file content.", "title": "What type of information could be disclosed by this vulnerability?" }, { "category": "faq", "text": "An attacker who successfully exploited the vulnerability could view some sensitive information (Confidentiality), make changes to disclosed information (Integrity), but cannot limit access to the resource (Availability).", "title": "According to the CVSS metrics, successful exploitation of this vulnerability could lead to some loss of confidentiality (C:L), and integrity (I:L) but lead to no loss of availability (A:N). What is the impact of this vulnerability?" }, { "category": "faq", "text": "An exploited vulnerability can affect resources beyond the security scope managed by the security authority of the vulnerable component. In this case, the vulnerable component and the impacted component are different and managed by different security authorities.", "title": "According to the CVSS metric, a successful exploitation could lead to a scope change (S:C). What does this mean for this vulnerability?" } ], "product_status": { "fixed": [ "11655" ], "known_affected": [ "1" ] }, "references": [ { "category": "self", "summary": "CVE-2026-55945 Microsoft Edge (Chromium-based) Information Disclosure Vulnerability - HTML", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55945" }, { "category": "self", "summary": "CVE-2026-55945 Microsoft Edge (Chromium-based) Information Disclosure Vulnerability - CSAF", "url": "https://msrc.microsoft.com/csaf/advisories/2026/msrc_cve-2026-55945.json" } ], "remediations": [ { "category": "vendor_fix", "date": "2026-07-03T07:00:00.000Z", "details": "150.0.4078.48:Security Update:https://docs.microsoft.com/en-us/DeployEdge/microsoft-edge-relnotes-security", "product_ids": [ "1" ], "url": "https://docs.microsoft.com/en-us/DeployEdge/microsoft-edge-relnotes-security" } ], "scores": [ { "cvss_v3": { "attackComplexity": "HIGH", "attackVector": "LOCAL", "availabilityImpact": "NONE", "baseScore": 4.2, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "environmentalsScore": 0.0, "exploitCodeMaturity": "UNPROVEN", "integrityImpact": "LOW", "privilegesRequired": "LOW", "remediationLevel": "OFFICIAL_FIX", "reportConfidence": "CONFIRMED", "scope": "CHANGED", "temporalScore": 3.7, "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C", "version": "3.1" }, "products": [ "1" ] } ], "threats": [ { "category": "impact", "details": "Information Disclosure" }, { "category": "exploit_status", "details": "Publicly Disclosed:No;Exploited:No" } ], "title": "Microsoft Edge (Chromium-based) Information Disclosure Vulnerability" } ] }