CVE-2026-111793: Openwave Messaging Limited Webtop Media Transcoder Incorrect Resource Transfer Between Spheres Vulnerability

Affected versions

Product	Affected versions	Fixed in
Openwave Webtop Media Transcoder	before 1.1.22.0	1.1.22.0

Required action (CISA's text)

Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.

Description (NVD)

Openwave Webtop Media Transcoder does not enforce administrator-defined file type restrictions to restrict the file-types to be converted. This may allow an authenticated user to process and convert unintended document types if bypassing the Webmail experience.

SOURCES

• NVDNVD entry for CVE-2026-111793
• CISA KEVCISA Known Exploited Vulnerabilities catalog

Data from NVD, CISA KEV, FIRST EPSS and vendor advisories. Updated 11 Nov 2026.