CVE-2009-1386

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 80.1% 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
Weaponized
5.0EG
EchelonGraph verdictPatch this weekExploitation is likely or a public exploit exists.
  • High exploitation likelihood — EPSS 80%
  • Public exploit code is available (Metasploit, Exploit-DB (verified), epss top5pct, epss high, public exploit)
CISA-KEV: Not listedEPSS PROB: 80%CVSS v2: 5.0Exploit: Metasploit · Exploit-DB (verified) · epss top5pct · epss high · public exploitExposed: 0

A fix is available — apply it.

ssl/s3_pkt.c in OpenSSL before 0.9.8i allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via a DTLS ChangeCipherSpec packet that occurs before ClientHello.

CVSS v2.0 (legacy)
5.0MEDIUMNVD never assigned a CVSS v3 rating to this CVE
EG Score
5.0(low)
EG Risk
59(Track)
EG Risk 59/100SSVC: 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%
Exploitation80% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
80%
EPSS %ILE
100%
KEV
Not listed

Published

June 4, 2009

Last Modified

April 23, 2026

References (42)

Patch Availability(2)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulibssl0.9.8 (0.9.8g-4ubuntu3.7) @ hardy2026-05-30ubuntu
redhatopenssl-0:0.9.8e-12.el52009-09-02redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
openssl—0.9.8k-1—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
openssl—0.9.8k-1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
openssl—0.9.8k-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
openssl—0.9.8k-1—

Weakness Classification(1)

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

All Vendor Advisories

(2)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 3× in last 7d / 7× 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. 2026-08-26 05:41 UTCOSV refresh
  2. 2026-08-25 13:43 UTCEPSS rescore
  3. 2026-08-19 16:58 UTCEPSS rescore
  4. 2026-08-15 01:24 UTCEPSS rescore
  5. 2026-08-09 22:10 UTCOSV refresh
  6. 2026-08-03 10:28 UTCEPSS rescore
  7. 2026-07-30 16:22 UTCEPSS rescore
  8. 2026-07-26 13:38 UTCEG score recompute▲ 5.00
  9. 2026-07-25 14:12 UTCEPSS rescore
  10. 2026-07-24 23:11 UTCOSV refresh
  11. 2026-07-24 14:12 UTCEPSS rescore
  12. 2026-07-23 00:58 UTCEG score recompute
  13. 2026-07-23 00:36 UTCEG score recompute▼ 8.20
  14. 2026-07-23 00:03 UTCEG score recompute▲ 8.20
  15. 2026-07-22 21:42 UTCEG score recompute
  16. 2026-07-22 14:03 UTCEPSS rescore
  17. 2026-07-20 17:03 UTCEPSS rescore
  18. 2026-07-20 17:03 UTCEPSS rescore
  19. 2026-07-15 16:54 UTCEPSS rescore
  20. 2026-07-15 16:54 UTCEPSS rescore
  21. 2026-07-11 08:22 UTCEPSS rescore
  22. 2026-07-11 08:22 UTCEPSS rescore
  23. 2026-07-07 18:11 UTCOSV refresh
  24. 2026-07-04 06:27 UTCEPSS rescore
  25. 2026-07-01 15:02 UTCEPSS rescore
Show 52 more
  1. 2026-06-28 04:52 UTCEPSS rescore
  2. 2026-06-28 04:52 UTCEPSS rescore
  3. 2026-06-25 13:46 UTCEPSS rescore
  4. 2026-06-25 13:46 UTCEPSS rescore
  5. 2026-06-24 14:02 UTCEPSS rescore
  6. 2026-06-24 14:02 UTCEPSS rescore
  7. 2026-06-23 21:29 UTCEPSS rescore
  8. 2026-06-23 21:29 UTCEPSS rescore
  9. 2026-06-21 01:56 UTCEPSS rescore
  10. 2026-06-21 01:56 UTCEPSS rescore
  11. 2026-06-19 05:25 UTCOSV refresh
  12. 2026-06-17 17:49 UTCEPSS rescore
  13. 2026-06-17 17:49 UTCEPSS rescore
  14. 2026-06-15 17:44 UTCEPSS rescore
  15. 2026-06-13 22:57 UTCEPSS rescore
  16. 2026-06-12 23:08 UTCEPSS rescore
  17. 2026-06-12 23:08 UTCEPSS rescore
  18. 2026-06-10 22:14 UTCEPSS rescore
  19. 2026-06-06 13:44 UTCEPSS rescore
  20. 2026-06-06 13:44 UTCEPSS rescore
  21. 2026-06-06 13:44 UTCEPSS rescore
  22. 2026-06-05 22:44 UTCEPSS rescore
  23. 2026-06-05 22:44 UTCEPSS rescore
  24. 2026-06-05 06:07 UTCEPSS rescore
  25. 2026-06-04 13:09 UTCEPSS rescore
  26. 2026-06-04 13:09 UTCEPSS rescore
  27. 2026-06-02 20:10 UTCEPSS rescore
  28. 2026-06-02 20:10 UTCEPSS rescore
  29. 2026-05-31 00:13 UTCEPSS rescore
  30. 2026-05-31 00:13 UTCEPSS rescore
  31. 2026-05-30 16:39 UTCEG score recompute
  32. 2026-05-30 16:39 UTCVendor advisory
  33. 2026-05-30 16:39 UTCGHSA enrichment
  34. 2026-05-29 13:40 UTCEPSS rescore
  35. 2026-05-29 07:06 UTCOSV refresh
  36. 2026-05-28 13:42 UTCEPSS rescore
  37. 2026-05-28 13:42 UTCEPSS rescore
  38. 2026-05-28 13:42 UTCEPSS rescore
  39. 2026-05-27 13:38 UTCEPSS rescore
  40. 2026-05-27 13:38 UTCEPSS rescore
  41. 2026-05-26 13:41 UTCEPSS rescore
  42. 2026-05-26 13:41 UTCEPSS rescore
  43. 2026-05-26 07:16 UTCEPSS rescore
  44. 2026-05-26 07:16 UTCEPSS rescore
  45. 2026-05-24 16:43 UTCEPSS rescore
  46. 2026-05-22 21:15 UTCEPSS rescore
  47. 2026-05-22 21:15 UTCEPSS rescore
  48. 2026-05-20 22:37 UTCEPSS rescore
  49. 2026-05-20 22:37 UTCEPSS rescore
  50. 2026-05-20 11:21 UTCEPSS rescore
  51. 2026-05-20 11:20 UTCEPSS rescore
  52. 2026-05-18 21:29 UTCEPSS rescore

Publicly available exploits

(2 references)

Working exploit code is in the public domain (1 Metasploit module) (1 Exploit-DB entry). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • Exploit-DBEDB-8873✓ verified
    First seen Jun 4, 2009

    OpenSSL < 0.9.8i - DTLS ChangeCipherSpec Remote Denial of Service

    Open source ↗
  • Metasploitauxiliary/dos/ssl/dtls_changecipherspec✓ verified
    First seen Apr 26, 2000

    OpenSSL DTLS ChangeCipherSpec Remote DoS

    Open source ↗

Related CVEs(same vendor + same CWE)

Frequently asked(4)

What is CVE-2009-1386?
CVE-2009-1386 is a medium vulnerability published on June 4, 2009. ssl/s3_pkt.c in OpenSSL before 0.9.8i allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via a DTLS ChangeCipherSpec packet that occurs before ClientHello.
When was CVE-2009-1386 disclosed?
CVE-2009-1386 was first published in the National Vulnerability Database on June 4, 2009, 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-2009-1386 actively exploited?
CVE-2009-1386 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 80% probability of exploitation in the next 30 days, which ranks it in the top 0.4% of all scored CVEs.
How do I remediate CVE-2009-1386?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2009-1386, 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.

Dependency Blast Radius

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