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ExploitedIn CISA KEVFix available

CVE-2026-111793

Unrestricted Media Conversion via Bypassed File Type Restrictions in Openwave Webtop

Exploitation confirmed. First attested on 2026-11-10 by CISA-ADP, CISA KEV.

  • Published2026-10-16
  • Fixed in1.1.22.0
  • WeaknessCWE-669

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

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.

Timeline

dates in UTC
  1. 2026-10-1618:28CVE publishedCNA
  2. 2026-10-1619:17CVE publishedNVD
  3. 2026-11-10Exploitation first reportedENISA EUVD
  4. 2026-11-10Reported as exploited by ENISA (EUVD)ENISA EUVD
  5. 2026-11-10Added to the CISA KEV catalogCISA KEV
  6. 2026-11-10Listed as exploited by GCVEGCVE
  7. 2026-11-1019:50SSVC exploitation set to activeCISA-ADP

Versions per branch

NVD
Openwave webtop media transcoder
BranchAffectedFixed in
1.1< 1.1.22.01.1.22.0

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Products declared by the CNA1 product

As mitre, the CNA that assigned this CVE, declared them in the CVE record; versions as written.

  • Openwave Messaging (Ireland) Limited Webtop Media Transcoderother versions: not affected

    platforms: Linux

    Affected
    • < 1.1.22.0fixed in 1.1.22.0custom

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2026-10-16

Fix

  1. Update Openwave webtop media transcoder to 1.1.22.0
  2. CISA’s required action: 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.due 2026-11-24

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

CISA Known Exploited Vulnerability

Date Added
2026-11-10
Patch Due Date
2026-11-24
Ransomware Use
Unknown
Required Action
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.

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Published
2026-10-16
Last Modified
2026-11-10
NVD status
Analyzed
GitHub Advisory
GHSA-5353-r4qc-2252

Frequently asked questions

What is CVE-2026-111793?

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.

Is CVE-2026-111793 actively exploited?

Yes. CVE-2026-111793 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been confirmed as actively exploited in the wild. CISA requires federal agencies to patch by 2026-11-24.

What is the CVSS score for CVE-2026-111793?

CVE-2026-111793 has a CVSS v3 base score of 4.3 (MEDIUM severity), with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L.

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Sources for this record