CVE-2004-0056: n/a vulnerability

CVE-2004-0056: Multiple vulnerabilities in the H.323 protocol implementation for Nortel Networks Business Communications M...

Multiple vulnerabilities in the H.323 protocol implementation for Nortel Networks Business Communications Manager (BCM), Succession 1000 IP Trunk and IP Peer Networking, and 802.11 Wireless IP Gateway allow remote attackers to cause a denial of service and possibly execute arbitrary code, as demonstrated by the NISCC/OUSPG PROTOS test suite for the H.225 protocol.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 8, 2024, 00:01 UTC (UTC+00:00)

Security readout for executives and security teams

This is an old Nortel H.323 implementation flaw that could let a remote attacker crash affected voice/networking systems and possibly run code. The main business concern is disruption to legacy voice services where these products still exist and expose H.323/H.225 traffic. Exposure is most likely in organizations still operating legacy Nortel voice, IP trunking, peer networking, or wireless IP gateway equipment with H.323/H.225 reachable from untrusted networks. Prioritize if these legacy Nortel systems still support business voice services. The issue is old, but exposed unsupported voice infrastructure can create outage risk and may be difficult to remediate quickly. Mitigation focus: Inventory Nortel BCM, Succession 1000, and 802.11 Wireless IP Gateway deployments.; Check vendor or CERT guidance for supported firmware, patches, or replacement advice.; Restrict H.323/H.225 access to trusted peers and required network paths..

Prepared: Jun 30, 2026, 07:12 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Jan 15, 2004, 05:00 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

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0CVSS vectors

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1Source links

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Source materials

CVE List V5 sourceCVE List V5

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

n/an/an/aListed

Weakness

CWE details

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