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TI-2006-04612 Aliases CVE-2006-4775GHSA-w58x-5ghh-784p

The VLAN Trunking Protocol (VTP) feature in Cisco IOS 12.1(19) and CatOS allows remote…

Priority MEDIUM 42CWE-399Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
— Not recorded in CVSS 2.0
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · Complete
Fix status
No fix listed

Attack profile from CVSS 2.0 · NVD. Fix status from CNA. Impact type from CWE-399 and the CVSS impact.

Summary

The VLAN Trunking Protocol (VTP) feature in Cisco IOS 12.1(19) and CatOS allows remote attackers to cause a denial of service by sending a VTP update with a revision value of 0x7FFFFFFF, which is incremented to 0x80000000 and is interpreted as a negative number in a signed context.

Why it matters now

EPSS 0.05142 92nd percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:o:cisco:ios:12.1\(19\):*:*:*:*:*:*:*12.1(19)VulnerableCisco
cpe:2.3:o:cisco:catos:*:*:*:*:*:*:*:*all versionsVulnerableCisco
  • cpe:2.3:o:cisco:ios:12.1\(19\):*:*:*:*:*:*:* Versions 12.1(19) Vulnerable ·Cisco
  • cpe:2.3:o:cisco:catos:*:*:*:*:*:*:*:* Versions all versions Vulnerable ·Cisco

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2006-4775
  2. 2026-10-03 Alias added: GHSA-w58x-5ghh-784p

References

Patch 1

Advisory 2

Other 2

  • TI-2001-00041 Memory leak in Cisco Catalyst 4000, 5000, and 6000 series switches allows remote… CVSS 2.0HIGH 7.8
  • TI-2003-00200 Unknown vulnerability in Cisco Catalyst 7.5(1) allows local users to bypass… CVSS 2.0HIGH 9.3
  • TI-2002-01178 Buffer overflow in the embedded HTTP server for Cisco Catalyst switches running CatOS 5.4… CVSS 2.0HIGH 7.1
  • TI-2005-04003 Unspecified Cisco Catalyst Switches allow remote attackers to cause a denial of service… CVSS 2.0HIGH 7.8
  • TI-2002-00996 Cisco IOS 12.0 through 12.2, when supporting SSH, allows remote attackers to cause a… CVSS 2.0HIGH 7.1
  • TI-2008-04717 Unspecified vulnerability in the VLAN Trunking Protocol (VTP) implementation on Cisco IOS… CVSS 2.0HIGH 7.1
See all 16 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences