CVE-2006-4776 json
Heap-based buffer overflow in the VLAN Trunking Protocol (VTP) feature in Cisco IOS 12.1(19) allows remote attackers to execute arbitrary c…
published 2006-09-14 20 y ago modified 2026-06-16 4 mo ago also EUVD-2006-4763
- cvss
- 7.5
- version 2.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 8.0%
- EPSS 8.0% chance of exploitation in 30 days, percentile 94%
- public exploits
- 0
- none known
Summary
Heap-based buffer overflow in the VLAN Trunking Protocol (VTP) feature in Cisco IOS 12.1(19) allows remote attackers to execute arbitrary code via a long VLAN name in a VTP type 2 summary advertisement.
Patch / fix
Exploit prediction
7.96% chance of exploitation in the next 30 days, higher than 94% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 2.0 | 7.5 | AV:N/AC:L/Au:N/C:P/I:P/A:P |
Classification
- Weakness
-
- CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer
- Technology feeds
References
-
cisco.com
/warp/public/707/cisco-sr-20060913-vtp.shtml
vendor-advisory, patch
-
vupen.com
/english/advisories/2006/3601
vdb-entry, vendor-advisory
-
secunia.com
/advisories/21896
third-party-advisory, vendor-advisory
-
vupen.com
/english/advisories/2006/3600
vdb-entry, vendor-advisory
-
kb.cert.org
/vuls/id/542108
third-party-advisory, us-government-resource
- phenoelit.de /stuff/CiscoVTP.txt
-
securityfocus.com
/bid/19998
vdb-entry
-
securitytracker.com
/id?1016843
vdb-entry
-
securityfocus.com
/archive/1/445938/100/0/threaded
mailing-list
-
osvdb.org
/28777
vdb-entry
-
exchange.xforce.ibmcloud.com
/vulnerabilities/28927
vdb-entry
-
securityfocus.com
/archive/1/445896/100/0/threaded
mailing-list
Sources
- CVE List CVE-2006-4776
- NVD CVE-2006-4776
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