CVE-2026-45650: Microsoft Bing UI misrepresentation spoofing vulnerability

CVE-2026-45650 · Severity: medium · CVSS 4.3 · Published 2026-06-09

Microsoft Bing is a web-based search engine used to find information and services online. A vulnerability in its user interface could allow an attacker to misrepresent critical information, potentially tricking users into believing they are interacting with a legitimate site or service. This type of spoofing can lead to the unauthorized disclosure of sensitive information if a user is misled by the falsified interface.

Technologies: Microsoft Bing. Vendors: Microsoft.

Quick answers

Is CVE-2026-45650 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-45650 being exploited in the wild.
How severe is CVE-2026-45650?
Medium severity, with a CVSS score of 4.3, published 9 June 2026.
Which products and versions are affected?
Microsoft Bing.
Is there a fix for CVE-2026-45650?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-45650 attacked?
It is attacked over the network, in a hosted service.
Am I affected by CVE-2026-45650?
Check whether you run Microsoft Bing. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

A vulnerability classified as CWE-451 (User Interface Misrepresentation of Critical Information) exists in Microsoft Bing. The flaw allows a remote, unauthenticated attacker to spoof interface elements over the network, potentially leading to information disclosure. Exploitation requires user interaction, typically involving a victim visiting a malicious link or viewing crafted content that triggers the UI misrepresentation. The vulnerability has a CVSS 3.1 base score of 4.3, reflecting low impact on confidentiality and no impact on integrity or availability. Microsoft has released security updates to address this issue.

Affected products

  • Microsoft Bing

Timeline

  • 2026-06-09: disclosed
  • 2026-06-09: advisory

References

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