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

Source: https://junglewise.ai/threats/cve-2026-45650-microsoft-bing-ui-misrepresentation-spoofing-vulnerability  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-06-09. Updated: 2026-06-09  
License: CC BY 4.0 with a link back

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](https://junglewise.ai/threats/technologies/bing). Vendors: [Microsoft](https://junglewise.ai/threats/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

- [https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45650](https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45650)

## Related threats

- [Deserialization of untrusted data in Microsoft Bing allows an unauthorized attacker to execute code over a network.](https://junglewise.ai/threats/cve-2026-33819-deserialization-of-untrusted-data-in-microsoft-bing-allows-an)
- [Microsoft Bing SSRF and elevation of privilege](https://junglewise.ai/threats/cve-2026-32186-microsoft-bing-ssrf-and-elevation-of-privilege)