HIGH
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
Published Sep 14, 2006
7.5
HIGHCVSS 2.0
EPSS 7.82%
Description
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.
Affected products
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
7.5 HIGH NVD
AV:N/AC:L/Au:N/C:P/I:P/A:P
Access Vector Network
Access Complexity Low
Authentication None
Confidentiality Impact Partial
Integrity Impact Partial
Availability Impact Partial
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
7.82% 0.07817
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.07817
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (12 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 7.82% (0.07817) | 94.49th | v5 (v2026.06.15) |
| Jun 15, 2026 | 7.36% (0.07365) | 93.59th | v5 (v2026.06.15) |
| Oct 8, 2025 | 17.27% (0.17272) | 94.71th | v4 (v2025.03.14) |
| Mar 30, 2025 | 21.16% (0.21156) | 95.17th | v4 (v2025.03.14) |
| Mar 29, 2025 | 23.21% (0.23208) | 93.45th | v4 (v2025.03.14) |
| Mar 17, 2025 | 21.16% (0.21156) | 95.19th | v4 (v2025.03.14) |
| Dec 17, 2024 | 53.93% (0.53933) | 97.74th | v3 (v2023.03.01) |
| Jun 10, 2023 | 44.44% (0.44442) | 96.85th | v3 (v2023.03.01) |
| Mar 7, 2023 | 44.45% (0.44454) | 96.76th | v3 (v2023.03.01) |
| Mar 6, 2023 | 11.27% (0.11270) | 95.02th | v2 (v2022.01.01) |
| Apr 1, 2022 | 11.27% (0.11270) | 94.61th | v2 (v2022.01.01) |
| Feb 4, 2022 | 11.27% (0.11270) | 88.71th | v2 (v2022.01.01) |
Weaknesses (1)
References (12)
- http://secunia.com/advisories/21896 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://securitytracker.com/id?1016843 vdb-entryx_refsource_SECTRACK
- http://www.cisco.com/warp/public/707/cisco-sr-20060913-vtp.shtml vendor-advisoryx_refsource_CISCOPatch
- http://www.kb.cert.org/vuls/id/542108 third-party-advisoryx_refsource_CERT-VNUS Government Resource
- http://www.osvdb.org/28777 vdb-entryx_refsource_OSVDB
- http://www.phenoelit.de/stuff/CiscoVTP.txt x_refsource_MISC
- http://www.securityfocus.com/archive/1/445896/100/0/threaded mailing-listx_refsource_BUGTRAQ
- http://www.securityfocus.com/archive/1/445938/100/0/threaded mailing-listx_refsource_BUGTRAQ
- http://www.securityfocus.com/bid/19998 vdb-entryx_refsource_BID
- http://www.vupen.com/english/advisories/2006/3600 vdb-entryx_refsource_VUPENVendor Advisory
- http://www.vupen.com/english/advisories/2006/3601 vdb-entryx_refsource_VUPENVendor Advisory
- https://exchange.xforce.ibmcloud.com/vulnerabilities/28927 vdb-entryx_refsource_XF
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Sep 14, 2006
Updated Aug 7, 2024
Reserved Sep 13, 2006
Link CVE-2006-4776
CISA Vulnrichment
Updated n/a