Security readout for executives and security teams
This issue lets an outside attacker ask an affected router to create internet-facing port forwards. For a business, that can unintentionally expose internal systems that were assumed to be protected by NAT or firewall boundaries. Exposure is most plausible where a Sitecom WL-111 or matching Broadcom Linux UPnP IGD implementation is reachable from the WAN. The provided data does not prove broader product impact. Treat this as an edge-device exposure risk. Prioritize confirming whether any affected router is still deployed, because a single exposed gateway can publish internal services without normal change control. Mitigation focus: Disable UPnP IGD on affected or internet-facing gateways where operationally possible.; Block UPnP control traffic from WAN interfaces at perimeter and device firewalls.; Review vendor or CERT guidance for firmware updates or device-specific remediation..
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
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ATT&CK lookup starting points
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CVE-2011-4503 mapping review
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Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
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CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
Products and packages named in the record
CWE details
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