CVE-2015-0240

HIGHCVSS v2 · 10.010.0—
EchelonGraph scoreLOW confidence

This CVE was only ever scored under CVSS v2.0. NVD CVSS v2.0 base 10.0 — 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:C/I:C/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 87.6% 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
10.0EG
EchelonGraph verdictPatch this weekExploitation is likely or a public exploit exists.
  • High exploitation likelihood — EPSS 88%
  • Public exploit code is available (Metasploit, epss top5pct, epss high, public exploit)
CISA-KEV: Not listedEPSS PROB: 88%CVSS v2: 10.0Exploit: Metasploit · epss top5pct · epss high · public exploitExposed: 0

A fix is available — apply it.

The Netlogon server implementation in smbd in Samba 3.5.x and 3.6.x before 3.6.25, 4.0.x before 4.0.25, 4.1.x before 4.1.17, and 4.2.x before 4.2.0rc5 performs a free operation on an uninitialized stack pointer, which allows remote attackers to execute arbitrary code via crafted Netlogon packets that use the ServerPasswordSet RPC API, as demonstrated by packets reaching the _netr_ServerPasswordSet function in rpc_server/netlogon/srv_netlog_nt.c.

CVSS v2.0 (legacy)
10.0HIGHNVD never assigned a CVSS v3 rating to this CVE
EG Score
10.0(low)
EG Risk
85(Track)
EG Risk 85/100SSVC: 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
Severity100% × 45%
Exploitation88% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
88%
EPSS %ILE
100%
KEV
Not listed

Published

February 24, 2015

Last Modified

May 6, 2026

References (71)

Vendor Advisories for CVE-2015-0240(9)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(10)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntuwinbind (2:4.1.6+dfsg-1ubuntu2.14.04.7) @ trusty2026-07-26ubuntu
redhatsamba-0:3.6.509-169.6.el6rhs2015-02-23redhat
redhatsamba3x-0:3.6.23-9.el5_112015-02-23redhat
redhatsamba-0:3.6.23-14.el6_62015-02-23redhat
redhatsamba-0:3.6.9-171.el6_52015-02-23redhat
redhatsamba4-0:4.0.0-66.el6_6.rc42015-02-23redhat
redhatsamba3x-0:3.6.6-0.131.el5_92015-02-23redhat
redhatsamba-0:3.6.9-167.10.3.el6rhs2015-02-23redhat
redhatsamba4-0:4.0.0-65.el6_5.rc42015-02-23redhat
redhatsamba-0:4.1.1-38.el7_02015-02-23redhat

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

(6 across 6 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
samba—2:4.1.17+dfsg-1—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
samba—2:4.1.17+dfsg-1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
samba—2:4.1.17+dfsg-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
samba—2:4.1.17+dfsg-1—
Debian:6.0(1)
PackageVulnerable rangeFixed inDependents
samba2:3.5.6~dfsg-3 ... 2:3.5.6~dfsg-3squeeze9 (12 versions)2:3.5.6~dfsg-3squeeze12—
Debian:7(1)
PackageVulnerable rangeFixed inDependents
samba2:3.6.6-6 ... 2:3.6.6-6+deb7u5~bpo60+1 (9 versions)2:3.6.6-6+deb7u5—

Additional Vendor Advisories

(1)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 2× in last 7d / 8633× 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 8,678 total refreshes for this CVE.

  1. 2026-08-19 16:59 UTCEPSS rescore
  2. 2026-08-16 14:51 UTCEPSS rescore
  3. 2026-08-11 01:01 UTCOSV refresh
  4. 2026-08-09 13:42 UTCEPSS rescore
  5. 2026-08-06 13:42 UTCEPSS rescore
  6. 2026-08-05 19:12 UTCEPSS rescore
  7. 2026-07-26 13:52 UTCEG score recompute▲ 10.00
  8. 2026-07-26 01:33 UTCVendor advisory
  9. 2026-07-26 01:32 UTCGHSA enrichment
  10. 2026-07-26 01:32 UTCVendor advisory
  11. 2026-07-26 01:31 UTCGHSA enrichment
  12. 2026-07-26 01:30 UTCVendor advisory
  13. 2026-07-26 01:30 UTCGHSA enrichment
  14. 2026-07-26 01:29 UTCVendor advisory
  15. 2026-07-26 01:29 UTCGHSA enrichment
  16. 2026-07-26 01:28 UTCVendor advisory
  17. 2026-07-26 01:28 UTCGHSA enrichment
  18. 2026-07-26 01:27 UTCVendor advisory
  19. 2026-07-26 01:27 UTCGHSA enrichment
  20. 2026-07-26 01:26 UTCVendor advisory
  21. 2026-07-26 01:26 UTCGHSA enrichment
  22. 2026-07-26 01:25 UTCVendor advisory
  23. 2026-07-26 01:25 UTCGHSA enrichment
  24. 2026-07-26 01:24 UTCVendor advisory
  25. 2026-07-26 01:24 UTCGHSA enrichment
Show 75 more
  1. 2026-07-26 01:23 UTCVendor advisory
  2. 2026-07-26 01:23 UTCGHSA enrichment
  3. 2026-07-26 01:22 UTCVendor advisory
  4. 2026-07-26 01:22 UTCGHSA enrichment
  5. 2026-07-26 01:21 UTCVendor advisory
  6. 2026-07-26 01:21 UTCGHSA enrichment
  7. 2026-07-26 01:20 UTCVendor advisory
  8. 2026-07-26 01:20 UTCGHSA enrichment
  9. 2026-07-26 01:19 UTCVendor advisory
  10. 2026-07-26 01:19 UTCGHSA enrichment
  11. 2026-07-26 01:18 UTCVendor advisory
  12. 2026-07-26 01:18 UTCGHSA enrichment
  13. 2026-07-26 01:17 UTCVendor advisory
  14. 2026-07-26 01:17 UTCGHSA enrichment
  15. 2026-07-26 01:16 UTCVendor advisory
  16. 2026-07-26 01:16 UTCGHSA enrichment
  17. 2026-07-26 01:15 UTCVendor advisory
  18. 2026-07-26 01:15 UTCGHSA enrichment
  19. 2026-07-26 01:14 UTCVendor advisory
  20. 2026-07-26 01:14 UTCGHSA enrichment
  21. 2026-07-26 01:13 UTCVendor advisory
  22. 2026-07-26 01:13 UTCGHSA enrichment
  23. 2026-07-26 01:13 UTCVendor advisory
  24. 2026-07-26 01:12 UTCGHSA enrichment
  25. 2026-07-26 01:11 UTCVendor advisory
  26. 2026-07-26 01:11 UTCGHSA enrichment
  27. 2026-07-26 01:10 UTCVendor advisory
  28. 2026-07-26 01:10 UTCGHSA enrichment
  29. 2026-07-26 01:09 UTCVendor advisory
  30. 2026-07-26 01:09 UTCGHSA enrichment
  31. 2026-07-26 01:08 UTCVendor advisory
  32. 2026-07-26 01:08 UTCGHSA enrichment
  33. 2026-07-26 01:07 UTCVendor advisory
  34. 2026-07-26 01:07 UTCGHSA enrichment
  35. 2026-07-26 01:06 UTCVendor advisory
  36. 2026-07-26 01:06 UTCGHSA enrichment
  37. 2026-07-26 01:05 UTCVendor advisory
  38. 2026-07-26 01:05 UTCGHSA enrichment
  39. 2026-07-26 01:04 UTCVendor advisory
  40. 2026-07-26 01:04 UTCGHSA enrichment
  41. 2026-07-26 01:04 UTCVendor advisory
  42. 2026-07-26 01:04 UTCGHSA enrichment
  43. 2026-07-26 01:02 UTCVendor advisory
  44. 2026-07-26 01:02 UTCGHSA enrichment
  45. 2026-07-26 01:01 UTCVendor advisory
  46. 2026-07-26 01:01 UTCGHSA enrichment
  47. 2026-07-26 01:00 UTCVendor advisory
  48. 2026-07-26 01:00 UTCGHSA enrichment
  49. 2026-07-26 00:59 UTCVendor advisory
  50. 2026-07-26 00:59 UTCGHSA enrichment
  51. 2026-07-26 00:58 UTCVendor advisory
  52. 2026-07-26 00:58 UTCGHSA enrichment
  53. 2026-07-26 00:57 UTCVendor advisory
  54. 2026-07-26 00:57 UTCGHSA enrichment
  55. 2026-07-26 00:56 UTCVendor advisory
  56. 2026-07-26 00:56 UTCGHSA enrichment
  57. 2026-07-26 00:55 UTCVendor advisory
  58. 2026-07-26 00:55 UTCGHSA enrichment
  59. 2026-07-26 00:54 UTCVendor advisory
  60. 2026-07-26 00:54 UTCGHSA enrichment
  61. 2026-07-26 00:53 UTCVendor advisory
  62. 2026-07-26 00:53 UTCGHSA enrichment
  63. 2026-07-26 00:52 UTCVendor advisory
  64. 2026-07-26 00:52 UTCGHSA enrichment
  65. 2026-07-26 00:51 UTCVendor advisory
  66. 2026-07-26 00:51 UTCGHSA enrichment
  67. 2026-07-26 00:50 UTCVendor advisory
  68. 2026-07-26 00:50 UTCGHSA enrichment
  69. 2026-07-26 00:49 UTCVendor advisory
  70. 2026-07-26 00:49 UTCGHSA enrichment
  71. 2026-07-26 00:48 UTCVendor advisory
  72. 2026-07-26 00:48 UTCGHSA enrichment
  73. 2026-07-26 00:47 UTCVendor advisory
  74. 2026-07-26 00:47 UTCGHSA enrichment
  75. 2026-07-26 00:47 UTCVendor advisory

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-36741
    First seen Apr 13, 2015

    Samba < 3.6.2 (x86) - Denial of Service (PoC)

    Open source ↗
  • Metasploitauxiliary/scanner/smb/smb_uninit_cred✓ verified
    First seen Jan 1, 2015

    Samba _netr_ServerPasswordSet Uninitialized Credential State

    Open source ↗

Frequently asked(4)

What is CVE-2015-0240?
CVE-2015-0240 is a high vulnerability published on February 24, 2015. The Netlogon server implementation in smbd in Samba 3.5.x and 3.6.x before 3.6.25, 4.0.x before 4.0.25, 4.1.x before 4.1.17, and 4.2.x before 4.2.0rc5 performs a free operation on an uninitialized stack pointer, which allows remote attackers to execute arbitrary code via crafted Netlogon packets…
When was CVE-2015-0240 disclosed?
CVE-2015-0240 was first published in the National Vulnerability Database on February 24, 2015, with the most recent update on May 6, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2015-0240 actively exploited?
CVE-2015-0240 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 88% probability of exploitation in the next 30 days, which ranks it in the top 0.3% of all scored CVEs.
How do I remediate CVE-2015-0240?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2015-0240, 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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