CVE-2006-5445

HIGHCVSS v2 · 7.87.8—
EchelonGraph scoreLOW confidence

This CVE was only ever scored under CVSS v2.0. NVD CVSS v2.0 base 7.8 — v2 rates that HIGH (v2 bands: LOW 0.0–3.9 / MEDIUM 4.0–6.9 / HIGH 7.0–10.0; v2 has no CRITICAL band). Vector AV:N/AC:L/Au:N/C:N/I:N/A:C. CVSS v2 is an older, coarser metric than v3.1/v4.0 (no Scope, no User Interaction, no Attack Requirements), so it is not directly comparable to a v3 or v4 score. NVD has never re-scored this record under v3. EPSS predicts 3.5% exploitation probability in the next 30 days, which is reflected in EG Risk but does not lift the v2 base. Confidence: LOW.

Sources: epss, nvd_v2
7.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 3%CVSS v2: 7.8Exploit: None knownExposed: 0

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

Unspecified vulnerability in the SIP channel driver (channels/chan_sip.c) in Asterisk 1.2.x before 1.2.13 and 1.4.x before 1.4.0-beta3 allows remote attackers to cause a denial of service (resource consumption) via unspecified vectors that result in the creation of "a real pvt structure" that uses more resources than necessary.

CVSS v2.0 (legacy)
7.8HIGHNVD never assigned a CVSS v3 rating to this CVE
EG Score
7.8(low)
EG Risk
41(Track)
EG Risk 41/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity78% × 45%
Exploitation3% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
3%
EPSS %ILE
88%
KEV
Not listed

Published

October 23, 2006

Last Modified

April 23, 2026

References (24)

Affected Packages

(2 across 2 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
asterisk—1:1.2.13~dfsg-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
asterisk0.1.11-3 ... 1:1.2.9.1.dfsg-1 (53 versions)1:1.2.13~dfsg-1—

Data Freshness Timeline

(refreshed 4× in last 7d / 6× 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. 2026-09-10 09:24 UTCEPSS rescore
  2. 2026-09-05 15:22 UTCEPSS rescore
  3. 2026-09-04 13:54 UTCEPSS rescore
  4. 2026-09-04 04:59 UTCEPSS rescore
  5. 2026-08-30 01:14 UTCEPSS rescore
  6. 2026-08-27 10:04 UTCOSV refresh
  7. 2026-08-10 23:38 UTCOSV refresh
  8. 2026-08-08 16:30 UTCEPSS rescore
  9. 2026-08-07 16:20 UTCEPSS rescore
  10. 2026-08-06 13:41 UTCEPSS rescore
  11. 2026-08-05 19:11 UTCEPSS rescore
  12. 2026-08-04 15:03 UTCEPSS rescore
  13. 2026-08-04 10:28 UTCEPSS rescore
  14. 2026-08-03 10:28 UTCEPSS rescore
  15. 2026-07-28 15:30 UTCEPSS rescore
  16. 2026-07-26 13:30 UTCEG score recompute▲ 7.80
  17. 2026-07-26 00:01 UTCOSV refresh
  18. 2026-07-25 14:11 UTCEPSS rescore
  19. 2026-07-24 14:11 UTCEPSS rescore
  20. 2026-07-23 00:51 UTCEG score recompute
  21. 2026-07-23 00:31 UTCEG score recompute
  22. 2026-07-22 23:55 UTCEG score recompute
  23. 2026-07-22 21:35 UTCEG score recompute
  24. 2026-07-22 14:03 UTCEPSS rescore
  25. 2026-07-21 15:19 UTCEPSS rescore
Show 73 more
  1. 2026-07-20 17:02 UTCEPSS rescore
  2. 2026-07-16 16:58 UTCEPSS rescore
  3. 2026-07-15 16:54 UTCEPSS rescore
  4. 2026-07-15 16:54 UTCEPSS rescore
  5. 2026-07-15 01:55 UTCEPSS rescore
  6. 2026-07-13 22:25 UTCEPSS rescore
  7. 2026-07-08 18:39 UTCOSV refresh
  8. 2026-07-08 15:09 UTCEPSS rescore
  9. 2026-07-06 02:19 UTCEPSS rescore
  10. 2026-07-06 02:19 UTCEPSS rescore
  11. 2026-07-05 02:26 UTCEPSS rescore
  12. 2026-07-04 06:27 UTCEPSS rescore
  13. 2026-07-04 06:26 UTCEPSS rescore
  14. 2026-07-02 14:00 UTCEPSS rescore
  15. 2026-07-01 15:02 UTCEPSS rescore
  16. 2026-07-01 15:02 UTCEPSS rescore
  17. 2026-06-30 23:18 UTCEPSS rescore
  18. 2026-06-29 14:02 UTCEPSS rescore
  19. 2026-06-29 14:02 UTCEPSS rescore
  20. 2026-06-28 14:02 UTCEPSS rescore
  21. 2026-06-28 04:52 UTCEPSS rescore
  22. 2026-06-25 13:46 UTCEPSS rescore
  23. 2026-06-25 13:46 UTCEPSS rescore
  24. 2026-06-24 14:02 UTCEPSS rescore
  25. 2026-06-24 14:01 UTCEPSS rescore
  26. 2026-06-23 21:29 UTCEPSS rescore
  27. 2026-06-23 21:29 UTCEPSS rescore
  28. 2026-06-21 01:56 UTCEPSS rescore
  29. 2026-06-21 01:56 UTCEPSS rescore
  30. 2026-06-21 01:56 UTCEPSS rescore
  31. 2026-06-20 06:42 UTCOSV refresh
  32. 2026-06-19 19:22 UTCEPSS rescore
  33. 2026-06-19 19:22 UTCEPSS rescore
  34. 2026-06-18 17:49 UTCEPSS rescore
  35. 2026-06-18 17:49 UTCEPSS rescore
  36. 2026-06-17 17:49 UTCEPSS rescore
  37. 2026-06-17 17:49 UTCEPSS rescore
  38. 2026-06-16 17:49 UTCEPSS rescore
  39. 2026-06-16 17:49 UTCEPSS rescore
  40. 2026-06-15 17:44 UTCEPSS rescore
  41. 2026-06-14 23:13 UTCEPSS rescore
  42. 2026-06-13 22:57 UTCEPSS rescore
  43. 2026-06-13 22:57 UTCEPSS rescore
  44. 2026-06-12 23:08 UTCEPSS rescore
  45. 2026-06-08 14:13 UTCEPSS rescore
  46. 2026-06-07 15:21 UTCEPSS rescore
  47. 2026-06-07 15:21 UTCEPSS rescore
  48. 2026-06-05 22:44 UTCEPSS rescore
  49. 2026-06-05 22:44 UTCEPSS rescore
  50. 2026-06-05 06:07 UTCEPSS rescore
  51. 2026-06-04 13:09 UTCEPSS rescore
  52. 2026-06-04 13:09 UTCEPSS rescore
  53. 2026-06-02 20:10 UTCEPSS rescore
  54. 2026-06-02 20:10 UTCEPSS rescore
  55. 2026-05-31 22:28 UTCEPSS rescore
  56. 2026-05-31 22:28 UTCEPSS rescore
  57. 2026-05-31 06:13 UTCEG score recompute
  58. 2026-05-31 06:13 UTCGHSA enrichment
  59. 2026-05-31 00:13 UTCEPSS rescore
  60. 2026-05-31 00:13 UTCEPSS rescore
  61. 2026-05-29 13:40 UTCEPSS rescore
  62. 2026-05-28 13:42 UTCEPSS rescore
  63. 2026-05-28 13:42 UTCEPSS rescore
  64. 2026-05-27 13:37 UTCEPSS rescore
  65. 2026-05-27 13:37 UTCEPSS rescore
  66. 2026-05-24 16:42 UTCEPSS rescore
  67. 2026-05-22 14:43 UTCOSV refresh
  68. 2026-05-21 22:38 UTCEPSS rescore
  69. 2026-05-20 22:36 UTCEPSS rescore
  70. 2026-05-20 11:20 UTCEPSS rescore
  71. 2026-05-20 11:20 UTCEPSS rescore
  72. 2026-05-18 21:29 UTCEPSS rescore
  73. 2026-05-18 21:29 UTCEPSS rescore

Frequently asked(4)

What is CVE-2006-5445?
CVE-2006-5445 is a high vulnerability published on October 23, 2006. Unspecified vulnerability in the SIP channel driver (channels/chan_sip.c) in Asterisk 1.2.x before 1.2.13 and 1.4.x before 1.4.0-beta3 allows remote attackers to cause a denial of service (resource consumption) via unspecified vectors that result in the creation of "a real pvt structure" that uses…
When was CVE-2006-5445 disclosed?
CVE-2006-5445 was first published in the National Vulnerability Database on October 23, 2006, with the most recent update on April 23, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2006-5445 actively exploited?
CVE-2006-5445 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 3% probability of exploitation in the next 30 days, which ranks it in the top 11.7% of all scored CVEs.
How do I remediate CVE-2006-5445?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2006-5445, 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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