CVE-2005-4826

Unspecified vulnerability in the VLAN Trunking Protocol (VTP) feature in Cisco IOS 12.1(22)EA3 on...

6.1 Medium

Unspecified vulnerability in the VLAN Trunking Protocol (VTP) feature in Cisco IOS 12.1(22)EA3 on Catalyst 2950T switches allows remote attackers to cause a denial of service (device reboot) via a crafted Subset-Advert message packet, a different issue than CVE-2006-4774, CVE-2006-4775, and CVE-2006-4776.

Exploit likelihood

1.02%Down 1.2 points since Feb 4, 2022

What each source reports

NVD Score used 6.1

Record: CVE-2005-4826
CVSS 2.0: 6.1 MediumAV:A/AC:L/Au:N/C:N/I:N/A:C
Updated: 2026-11-02

CVE List No score

Record: CVE-2005-4826
Updated: 2026-11-02

EUVDEUVD-2005-4819 No score

Record: EUVD-2005-4819
Updated: 2026-11-03

GitHub AdvisoriesGHSA-x2rx-8768-8678 No score

Unspecified vulnerability in the VLAN Trunking Protocol (VTP) feature in Cisco IOS 12.1(22)EA3 on...

Record: GHSA-x2rx-8768-8678
Updated: 2026-11-02

Affected products

cisco ios

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2005-4826 is a medium vulnerability (CVSS 6.1) in Cisco Ios, published December 31, 2005. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.02%, the 63rd percentile. No source names a fixed version.

References

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