CVE-2026-45489: CWE-749: Exposed Dangerous Method or Function in Microsoft Microsoft Edge (Chromium-based)
CVE-2026-45489 is a medium severity spoofing vulnerability in Microsoft Edge (Chromium-based) identified as CWE-749 (Exposed Dangerous Method or Function) and CWE-290. The vulnerability allows an attacker to potentially spoof content or functionality within the browser. An official fix is available from Microsoft to address this issue.
AI Analysis
Technical Summary
This vulnerability in Microsoft Edge (Chromium-based) involves an exposed dangerous method or function that can be exploited to perform spoofing attacks. The CVSS 3.1 base score is 6.5, indicating a medium severity with network attack vector, low attack complexity, no privileges required, user interaction required, unchanged scope, and high confidentiality impact but no integrity or availability impact. Microsoft has released an official fix to remediate this vulnerability.
Potential Impact
Successful exploitation could allow an attacker to spoof content or functionality in Microsoft Edge, potentially misleading users or causing them to interact with malicious content. The confidentiality impact is high, but integrity and availability are not affected. No known exploits are currently reported in the wild.
Mitigation Recommendations
An official fix from Microsoft is available and should be applied to remediate this vulnerability. Users and administrators should update Microsoft Edge to the patched version as soon as possible to mitigate the risk.
CVE-2026-45489: CWE-749: Exposed Dangerous Method or Function in Microsoft Microsoft Edge (Chromium-based)
Description
CVE-2026-45489 is a medium severity spoofing vulnerability in Microsoft Edge (Chromium-based) identified as CWE-749 (Exposed Dangerous Method or Function) and CWE-290. The vulnerability allows an attacker to potentially spoof content or functionality within the browser. An official fix is available from Microsoft to address this issue.
CVSS v3.1
Score 6.5medium
Affected software
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability in Microsoft Edge (Chromium-based) involves an exposed dangerous method or function that can be exploited to perform spoofing attacks. The CVSS 3.1 base score is 6.5, indicating a medium severity with network attack vector, low attack complexity, no privileges required, user interaction required, unchanged scope, and high confidentiality impact but no integrity or availability impact. Microsoft has released an official fix to remediate this vulnerability.
Potential Impact
Successful exploitation could allow an attacker to spoof content or functionality in Microsoft Edge, potentially misleading users or causing them to interact with malicious content. The confidentiality impact is high, but integrity and availability are not affected. No known exploits are currently reported in the wild.
Mitigation Recommendations
An official fix from Microsoft is available and should be applied to remediate this vulnerability. Users and administrators should update Microsoft Edge to the patched version as soon as possible to mitigate the risk.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Microsoft Security Response Center
- Advisory Id
- msrc_CVE-2026-45489
- Cve Count
- 1
- Additional Cves
- []
- Cvss Version
- null
- Remediation Level
- official-fix
Threat ID: 6a54ae1c68715ace438fa269
Added to database: 07/13/2026, 09:21:32 UTC
Last enriched: 07/31/2026, 00:58:50 UTC
Last updated: 07/31/2026, 19:55:52 UTC
Views: 163
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
External Links
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.