CVE-2026-111793
Openwave Messaging Limited Webtop Media Transcoder Incorrect Resource Transfer Between Spheres Vulnerability - [Actively Exploited]
Description
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.
INFO
Published Date :
Oct. 16, 2026, 7:17 p.m.
Last Modified :
Nov. 11, 2026, 5:19 a.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CISA KEV (Known Exploited Vulnerabilities)
For the benefit of the cybersecurity community and network defenders—and to help every organization better manage vulnerabilities and keep pace with threat activity—CISA maintains the authoritative source of vulnerabilities that have been exploited in the wild.
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.
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.
Unknown
https://github.com/GISOpenwave/security-advisories-public/blob/main/CAN-2026-2032674.md ; https://jvn.jp/en/vu/JVNVU93403064/ ; BOD 26-04: https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk ; Forensics Triage Requirements: https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk ; https://nvd.nist.gov/vuln/detail/CVE-2026-111793
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | MEDIUM | 8254265b-2729-46b6-b9e3-3dfca2d5bfca | ||||
| CVSS 3.1 | MEDIUM | MITRE-CVE | ||||
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Verify and enforce file type restrictions.
- Update software to apply restrictions.
- Restrict user access to conversion features.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-111793.
| URL | Resource |
|---|---|
| https://github.com/GISOpenwave/security-advisories-public/blob/main/CAN-2026-2032674.md | Third Party Advisory |
| https://openwave.ai | Product |
| https://jvn.jp/en/vu/JVNVU93403064/ | Third Party Advisory |
| https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-111793 | US Government Resource |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-111793 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-111793
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-111793 vulnerability anywhere in the article.
-
The Hacker News
Cisco BroadWorks and Openwave Flaws Actively Exploited Despite Available Patches
The U.S. Cybersecurity and Infrastructure Security Agency (CISA) Tuesday added two security flaws impacting Cisco BroadWorks and Openwave Messaging Webtop Media Transcoder to its Known Exploited Vulne ... Read more
The following table lists the changes that have been made to the
CVE-2026-111793 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Nov. 11, 2026
Action Type Old Value New Value Removed SSVC {'id': 'CVE-2026-111793', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'active'}, {'automatable': 'no'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-11-10T19:50:15.242846Z'} Added SSVC {'id': 'CVE-2026-111793', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'active'}, {'automatable': 'no'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-11-10T00:00:00+00:00'} -
Initial Analysis by [email protected]
Nov. 10, 2026
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:a:openwave:webtop_media_transcoder:*:*:*:*:*:*:*:* versions up to (excluding) 1.1.22.0 Added Reference Type MITRE: https://github.com/GISOpenwave/security-advisories-public/blob/main/CAN-2026-2032674.md Types: Third Party Advisory Added Reference Type MITRE: https://openwave.ai Types: Product Added Reference Type CISA-ADP: https://jvn.jp/en/vu/JVNVU93403064/ Types: Third Party Advisory Added Reference Type CISA-ADP: https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-111793 Types: US Government Resource -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Nov. 10, 2026
Action Type Old Value New Value Added Reference https://jvn.jp/en/vu/JVNVU93403064/ Added Reference https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-111793 Removed SSVC {'id': 'CVE-2026-111793', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-10-19T15:27:28.876275Z'} Added SSVC {'id': 'CVE-2026-111793', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'active'}, {'automatable': 'no'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-11-10T19:50:15.242846Z'} -
CVE CISA KEV Update by 9119a7d8-5eab-497f-8521-727c672e3725
Nov. 10, 2026
Action Type Old Value New Value Added Date Added 2026-11-10 Added Due Date 2026-11-10 Added Required Action 2026-11-10 Added Vulnerability Name 2026-11-10 -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Oct. 19, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-111793', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-10-19T15:27:28.876275Z'} -
New CVE Received by [email protected]
Oct. 16, 2026
Action Type Old Value New Value Added Description 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. Added CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L Added CWE CWE-669 Added Affected New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/111xxx/CVE-2026-111793.json">CVE-2026-111793</a> Added Reference https://github.com/GISOpenwave/security-advisories-public/blob/main/CAN-2026-2032674.md Added Reference https://openwave.ai