CVE-2006-0340

NONECVSS 0.0
0.0
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • No confirmed exploitation signals yet
CISA-KEV: Not listedEPSS: 3%CVSS: —Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

Unspecified vulnerability in Stack Group Bidding Protocol (SGBP) support in Cisco IOS 12.0 through 12.4 running on various Cisco products, when SGBP is enabled, allows remote attackers on the local network to cause a denial of service (device hang and network traffic loss) via a crafted UDP packet to port 9900.

CVSS v3
—
EG Score
0.0(none)
EPSS
84.4%
KEV
Not listed

Published

January 21, 2006

Last Modified

April 16, 2026

References (16)

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 6× in last 7d / 29× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-13 22:25 UTCEPSS rescore
  2. 2026-07-13 06:07 UTCEPSS rescore
  3. 2026-07-13 06:07 UTCEPSS rescore
  4. 2026-07-11 08:22 UTCEPSS rescore
  5. 2026-07-09 19:03 UTCEPSS rescore
  6. 2026-07-08 15:09 UTCEPSS rescore
  7. 2026-07-06 02:19 UTCEPSS rescore
  8. 2026-07-06 02:19 UTCEPSS rescore
  9. 2026-07-04 06:26 UTCEPSS rescore
  10. 2026-07-02 14:00 UTCEPSS rescore
  11. 2026-07-01 15:01 UTCEPSS rescore
  12. 2026-06-29 14:02 UTCEPSS rescore
  13. 2026-06-29 14:02 UTCEPSS rescore
  14. 2026-06-27 03:04 UTCEPSS rescore
  15. 2026-06-25 13:46 UTCEPSS rescore
  16. 2026-06-24 14:01 UTCEPSS rescore
  17. 2026-06-24 14:01 UTCEPSS rescore
  18. 2026-06-22 14:22 UTCEPSS rescore
  19. 2026-06-21 01:56 UTCEPSS rescore
  20. 2026-06-19 19:22 UTCEPSS rescore
  21. 2026-06-19 19:22 UTCEPSS rescore
  22. 2026-06-18 17:49 UTCEPSS rescore
  23. 2026-06-18 17:49 UTCEPSS rescore
  24. 2026-06-17 17:49 UTCEPSS rescore
  25. 2026-06-17 17:49 UTCEPSS rescore
Show 43 more
  1. 2026-06-16 17:49 UTCEPSS rescore
  2. 2026-06-16 17:49 UTCEPSS rescore
  3. 2026-06-15 17:44 UTCEPSS rescore
  4. 2026-06-14 23:13 UTCEPSS rescore
  5. 2026-06-13 22:56 UTCEPSS rescore
  6. 2026-06-12 23:08 UTCEPSS rescore
  7. 2026-06-11 13:55 UTCEPSS rescore
  8. 2026-06-10 22:14 UTCEPSS rescore
  9. 2026-06-10 13:17 UTCEPSS rescore
  10. 2026-06-05 22:43 UTCEPSS rescore
  11. 2026-06-05 06:07 UTCEPSS rescore
  12. 2026-06-05 06:07 UTCEPSS rescore
  13. 2026-06-04 13:09 UTCEPSS rescore
  14. 2026-06-04 13:09 UTCEPSS rescore
  15. 2026-06-02 20:10 UTCEPSS rescore
  16. 2026-06-02 20:10 UTCEPSS rescore
  17. 2026-06-01 13:49 UTCEPSS rescore
  18. 2026-06-01 13:49 UTCEPSS rescore
  19. 2026-06-01 13:49 UTCEPSS rescore
  20. 2026-05-31 22:28 UTCEPSS rescore
  21. 2026-05-31 10:19 UTCEG score recompute
  22. 2026-05-31 10:19 UTCGHSA enrichment
  23. 2026-05-31 00:13 UTCEPSS rescore
  24. 2026-05-31 00:13 UTCEPSS rescore
  25. 2026-05-31 00:13 UTCEPSS rescore
  26. 2026-05-29 13:40 UTCEPSS rescore
  27. 2026-05-28 13:42 UTCEPSS rescore
  28. 2026-05-28 13:42 UTCEPSS rescore
  29. 2026-05-27 13:37 UTCEPSS rescore
  30. 2026-05-27 13:37 UTCEPSS rescore
  31. 2026-05-26 13:41 UTCEPSS rescore
  32. 2026-05-26 13:41 UTCEPSS rescore
  33. 2026-05-26 07:16 UTCEPSS rescore
  34. 2026-05-26 07:16 UTCEPSS rescore
  35. 2026-05-24 16:42 UTCEPSS rescore
  36. 2026-05-22 21:15 UTCEPSS rescore
  37. 2026-05-22 21:15 UTCEPSS rescore
  38. 2026-05-21 22:38 UTCEPSS rescore
  39. 2026-05-20 22:36 UTCEPSS rescore
  40. 2026-05-20 22:36 UTCEPSS rescore
  41. 2026-05-20 11:20 UTCEPSS rescore
  42. 2026-05-20 11:20 UTCEPSS rescore
  43. 2026-05-18 21:29 UTCEPSS rescore

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Frequently asked(4)

What is CVE-2006-0340?
CVE-2006-0340 is a none vulnerability published on January 21, 2006. Unspecified vulnerability in Stack Group Bidding Protocol (SGBP) support in Cisco IOS 12.0 through 12.4 running on various Cisco products, when SGBP is enabled, allows remote attackers on the local network to cause a denial of service (device hang and network traffic loss) via a crafted UDP packet…
When was CVE-2006-0340 disclosed?
CVE-2006-0340 was first published in the National Vulnerability Database on January 21, 2006, with the most recent update on April 16, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2006-0340 actively exploited?
CVE-2006-0340 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 84.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
How do I remediate CVE-2006-0340?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2006-0340, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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