Critical

Cisco BroadWorks and Openwave Flaws Actively Exploited Despite Available Patches

The Hacker News

November 11, 2026 at 6:04 AM

Actively Exploited

Overview

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) has flagged two vulnerabilities in Cisco BroadWorks and Openwave Messaging Webtop Media Transcoder, noting that they are currently being exploited in the wild. The first vulnerability, identified as CVE-2026-20320, has a CVSS score of 7.5 and involves improper restrictions on XML external entities. This means attackers could potentially manipulate XML data to gain unauthorized access or execute malicious commands. Organizations using these products should take immediate action to secure their systems, as the vulnerabilities can lead to significant data breaches or system compromises. Patches are available, but the urgency is heightened due to ongoing exploitation.

Key Takeaways

Active Exploitation: This vulnerability is being actively exploited by attackers. Immediate action is recommended.
Affected Systems: Cisco BroadWorks, Openwave Messaging Webtop Media Transcoder
Action Required: Patches are available for both vulnerabilities; organizations should apply these updates immediately to mitigate risks associated with the exploitation.
Timeline: Newly disclosed

Original Article Summary

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 Vulnerabilities (KEV) catalog, citing evidence of active exploitation. Details of the vulnerabilities are below - CVE-2026-20320 (CVSS score: 7.5) - An improper restriction of XML external entity

Impact

Cisco BroadWorks, Openwave Messaging Webtop Media Transcoder

Exploitation Status

This vulnerability is confirmed to be actively exploited by attackers in real-world attacks. Organizations should prioritize patching or implementing workarounds immediately.

Timeline

Newly disclosed

Remediation

Patches are available for both vulnerabilities; organizations should apply these updates immediately to mitigate risks associated with the exploitation.

Additional Information

This threat intelligence is aggregated from trusted cybersecurity sources. For the most up-to-date information, technical details, and official vendor guidance, please refer to the original article linked below.

Related Topics: This incident relates to CVE, Cisco, Vulnerability.

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