Openwave Messaging Limited Webtop Media Transcoder

What it is

Openwave Messaging Limited Webtop Media Transcoder contains an incorrect resource transfer between spheres vulnerability that may allow an authenticated user to process and convert unintended document types if bypassing the Webmail experience.

What to do

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.

Vendor notices and references

• github.com/GISOpenwave/security-advisories-public/blob/main/CAN-2026-2032674.md
• jvn.jp/en/vu/JVNVU93403064/
• nvd.nist.gov/vuln/detail/CVE-2026-111793

Description and required action as published by CISA. Full record at NVD.