CVE-2008-5006

MEDIUMCVSS v2 · 5.05.0—
EchelonGraph scoreLOW confidence

This CVE was only ever scored under CVSS v2.0. NVD CVSS v2.0 base 5.0 — v2 rates that MEDIUM (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:P. 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 1.9% 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
5.0EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 2%CVSS v2: 5.0Exploit: None knownExposed: 0

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

smtp.c in the c-client library in University of Washington IMAP Toolkit 2007b allows remote SMTP servers to cause a denial of service (NULL pointer dereference and application crash) by responding to the QUIT command with a close of the TCP connection instead of the expected 221 response code.

CVSS v2.0 (legacy)
5.0MEDIUMNVD never assigned a CVSS v3 rating to this CVE
EG Score
5.0(low)
EG Risk
28(Track)
EG Risk 28/100SSVC: 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
Severity50% × 45%
Exploitation2% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
2%
EPSS %ILE
78%
KEV
Not listed

Published

November 10, 2008

Last Modified

April 23, 2026

References (12)

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
uw-imap—7:2007d~dfsg-1—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
uw-imap—7:2007d~dfsg-1—
Debian:4.0(1)
PackageVulnerable rangeFixed inDependents
uw-imap7:2002edebian1-13.17:2002edebian1-13.1+etch1—
Debian:5.0(1)
PackageVulnerable rangeFixed inDependents
uw-imap—2007b~dfsg-4+lenny3—

Data Freshness Timeline

(refreshed 1× in last 7d / 10× 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.

Showing the most recent 100 of 115 total refreshes for this CVE.

  1. 2026-08-26 14:13 UTCOSV refresh
  2. 2026-08-15 01:24 UTCEPSS rescore
  3. 2026-08-10 03:39 UTCOSV refresh
  4. 2026-08-08 16:31 UTCEPSS rescore
  5. 2026-08-07 16:21 UTCEPSS rescore
  6. 2026-08-06 13:41 UTCEPSS rescore
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  9. 2026-08-03 10:28 UTCEPSS rescore
  10. 2026-07-30 01:25 UTCEPSS rescore
  11. 2026-07-26 13:36 UTCEG score recompute▲ 5.00
  12. 2026-07-25 14:12 UTCEPSS rescore
  13. 2026-07-25 04:11 UTCOSV refresh
  14. 2026-07-24 14:12 UTCEPSS rescore
  15. 2026-07-23 14:14 UTCEPSS rescore
  16. 2026-07-23 00:57 UTCEG score recompute
  17. 2026-07-23 00:35 UTCEG score recompute
  18. 2026-07-23 00:02 UTCEG score recompute
  19. 2026-07-22 21:41 UTCEG score recompute
  20. 2026-07-20 17:03 UTCEPSS rescore
  21. 2026-07-18 09:59 UTCEPSS rescore
  22. 2026-07-16 16:58 UTCEPSS rescore
  23. 2026-07-15 16:54 UTCEPSS rescore
  24. 2026-07-15 16:54 UTCEPSS rescore
  25. 2026-07-15 01:55 UTCEPSS rescore
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  1. 2026-07-13 22:25 UTCEPSS rescore
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  3. 2026-07-11 08:22 UTCEPSS rescore
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  5. 2026-07-09 19:04 UTCEPSS rescore
  6. 2026-07-08 15:09 UTCEPSS rescore
  7. 2026-07-07 22:57 UTCOSV refresh
  8. 2026-07-06 16:23 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
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  17. 2026-06-30 23:19 UTCEPSS rescore
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  20. 2026-06-28 14:03 UTCEPSS rescore
  21. 2026-06-28 04:52 UTCEPSS rescore
  22. 2026-06-27 03:04 UTCEPSS rescore
  23. 2026-06-25 13:46 UTCEPSS rescore
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  25. 2026-06-24 14:02 UTCEPSS rescore
  26. 2026-06-24 14:02 UTCEPSS rescore
  27. 2026-06-23 21:29 UTCEPSS rescore
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  29. 2026-06-22 14:22 UTCEPSS rescore
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  31. 2026-06-21 14:53 UTCEPSS rescore
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  35. 2026-06-19 19:22 UTCEPSS rescore
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  37. 2026-06-19 10:55 UTCOSV refresh
  38. 2026-06-18 17:49 UTCEPSS rescore
  39. 2026-06-18 17:49 UTCEPSS rescore
  40. 2026-06-17 17:49 UTCEPSS rescore
  41. 2026-06-17 17:49 UTCEPSS rescore
  42. 2026-06-16 17:49 UTCEPSS rescore
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  44. 2026-06-15 17:44 UTCEPSS rescore
  45. 2026-06-14 23:13 UTCEPSS rescore
  46. 2026-06-13 22:57 UTCEPSS rescore
  47. 2026-06-12 23:08 UTCEPSS rescore
  48. 2026-06-12 23:08 UTCEPSS rescore
  49. 2026-06-11 13:56 UTCEPSS rescore
  50. 2026-06-10 22:14 UTCEPSS rescore
  51. 2026-06-10 13:17 UTCEPSS rescore
  52. 2026-06-08 14:13 UTCEPSS rescore
  53. 2026-06-07 15:22 UTCEPSS rescore
  54. 2026-06-06 13:44 UTCEPSS rescore
  55. 2026-06-06 13:44 UTCEPSS rescore
  56. 2026-06-05 22:44 UTCEPSS rescore
  57. 2026-06-05 22:44 UTCEPSS rescore
  58. 2026-06-05 06:07 UTCEPSS rescore
  59. 2026-06-04 13:09 UTCEPSS rescore
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  63. 2026-06-01 13:49 UTCEPSS rescore
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  66. 2026-05-31 22:28 UTCEPSS rescore
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  68. 2026-05-31 00:13 UTCEPSS rescore
  69. 2026-05-31 00:13 UTCEPSS rescore
  70. 2026-05-30 19:34 UTCEG score recompute
  71. 2026-05-30 19:34 UTCGHSA enrichment
  72. 2026-05-29 13:40 UTCEPSS rescore
  73. 2026-05-28 13:42 UTCEPSS rescore
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  75. 2026-05-28 13:42 UTCEPSS rescore

Frequently asked(4)

What is CVE-2008-5006?
CVE-2008-5006 is a medium vulnerability published on November 10, 2008. smtp.c in the c-client library in University of Washington IMAP Toolkit 2007b allows remote SMTP servers to cause a denial of service (NULL pointer dereference and application crash) by responding to the QUIT command with a close of the TCP connection instead of the expected 221 response code.
When was CVE-2008-5006 disclosed?
CVE-2008-5006 was first published in the National Vulnerability Database on November 10, 2008, 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-2008-5006 actively exploited?
CVE-2008-5006 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 2% probability of exploitation in the next 30 days, which ranks it in the top 21.7% of all scored CVEs.
How do I remediate CVE-2008-5006?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2008-5006, 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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