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CVE-2026-20320 is an XML External Entity (XXE) vulnerability in the Open Client Interface (OCI) XML Parser in Cisco BroadWorks. The parser permits external entity resolution by default. A remote unauthenticated attacker can submit a crafted XML message to the Open Client Interface Provisioning (OCI-P) service to cause external entity processing and disclose files or configuration data accessible to the Cisco BroadWorks user. Affected BroadWorks Application Delivery Platform, Application Server, Profile Server, and Xtended Services Platform releases prior to RI.2026.07 are affected.
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What an attacker gets, and what they’ve been doing with it.
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Patch, then assume compromise.
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
10 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A high-severity blind XML External Entity (XXE) injection vulnerability in the Cisco BroadWorks Open Client Interface XML Parser that could allow unauthenticated remote attackers to read sensitive configuration data and files from affected systems.
A high-severity XXE-style vulnerability in the Cisco BroadWorks OCI XML parser that allows unauthenticated remote attackers to read sensitive configuration information and files due to external entity resolution being enabled by default.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.