CVE-2008-4037

HIGHCVSS v2 · 9.39.3—
EchelonGraph scoreLOW confidence

This CVE was only ever scored under CVSS v2.0. NVD CVSS v2.0 base 9.3 — 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:M/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 59.1% 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
9.3EG
EchelonGraph verdictPatch this weekExploitation is likely or a public exploit exists.
  • High exploitation likelihood — EPSS 59%
  • Public exploit code is available (Metasploit, Exploit-DB (verified), epss top5pct, epss high, public exploit)
CISA-KEV: Not listedEPSS PROB: 59%CVSS v2: 9.3Exploit: Metasploit · Exploit-DB (verified) · epss top5pct · epss high · public exploitExposed: 0

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

Microsoft Windows 2000 Gold through SP4, XP Gold through SP3, Server 2003 SP1 and SP2, Vista Gold and SP1, and Server 2008 allows remote SMB servers to execute arbitrary code on a client machine by replaying the NTLM credentials of a client user, as demonstrated by backrush, aka "SMB Credential Reflection Vulnerability." NOTE: some reliable sources report that this vulnerability exists because of an insufficient fix for CVE-2000-0834.

CVSS v2.0 (legacy)
9.3HIGHNVD never assigned a CVSS v3 rating to this CVE
EG Score
9.3(low)
EG Risk
72(Track)
EG Risk 72/100SSVC: 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
Severity93% × 45%
Exploitation65% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
59%
EPSS %ILE
99%
KEV
Not listed

Published

November 12, 2008

Last Modified

April 23, 2026

References (30)

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 8× in last 7d / 23× 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. 2026-07-26 13:36 UTCEG score recompute▲ 9.30
  2. 2026-07-25 14:12 UTCEPSS rescore
  3. 2026-07-24 14:12 UTCEPSS rescore
  4. 2026-07-23 14:14 UTCEPSS rescore
  5. 2026-07-23 00:56 UTCEG score recompute
  6. 2026-07-23 00:35 UTCEG score recompute▼ 4.80
  7. 2026-07-23 00:01 UTCEG score recompute▲ 4.80
  8. 2026-07-22 21:40 UTCEG score recompute
  9. 2026-07-20 17:03 UTCEPSS rescore
  10. 2026-07-18 09:59 UTCEPSS rescore
  11. 2026-07-16 16:58 UTCEPSS rescore
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  1. 2026-06-25 13:46 UTCEPSS rescore
  2. 2026-06-23 21:29 UTCEPSS rescore
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  4. 2026-06-22 14:22 UTCEPSS rescore
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  6. 2026-06-21 01:56 UTCEPSS rescore
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  8. 2026-06-18 17:49 UTCEPSS rescore
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  20. 2026-06-10 13:17 UTCEPSS rescore
  21. 2026-06-08 14:13 UTCEPSS rescore
  22. 2026-06-07 15:22 UTCEPSS rescore
  23. 2026-06-06 13:44 UTCEPSS rescore
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  25. 2026-06-05 22:44 UTCEPSS rescore
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  27. 2026-06-05 06:07 UTCEPSS rescore
  28. 2026-06-04 13:09 UTCEPSS rescore
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  30. 2026-06-02 20:10 UTCEPSS rescore
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  32. 2026-06-01 13:49 UTCEPSS rescore
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  35. 2026-05-31 00:13 UTCEPSS rescore
  36. 2026-05-31 00:13 UTCEPSS rescore
  37. 2026-05-30 19:33 UTCEG score recompute
  38. 2026-05-30 19:33 UTCGHSA enrichment
  39. 2026-05-29 13:40 UTCEPSS rescore
  40. 2026-05-28 13:42 UTCEPSS rescore
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  42. 2026-05-28 13:42 UTCEPSS rescore
  43. 2026-05-27 13:38 UTCEPSS rescore
  44. 2026-05-27 13:37 UTCEPSS rescore
  45. 2026-05-26 07:16 UTCEPSS rescore
  46. 2026-05-26 07:16 UTCEPSS rescore
  47. 2026-05-22 21:15 UTCEPSS rescore
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  49. 2026-05-20 22:37 UTCEPSS rescore
  50. 2026-05-20 22:36 UTCEPSS rescore
  51. 2026-05-18 21:29 UTCEPSS rescore

Publicly available exploits

(4 references)

Working exploit code is in the public domain (1 Metasploit module) (3 Exploit-DB entries). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • Exploit-DBEDB-16360✓ verified
    First seen Sep 21, 2010

    Microsoft Windows - SMB Relay Code Execution (MS08-068) (Metasploit)

    Open source ↗
  • Exploit-DBEDB-7125✓ verified
    First seen Nov 14, 2008

    Microsoft Windows - SmbRelay3 NTLM Replay (MS08-068)

    Open source ↗
  • Exploit-DBEDB-20✓ verified
    First seen Apr 25, 2003

    Microsoft Windows 2000/XP - SMB Authentication Remote Overflow

    Open source ↗
  • Metasploitexploit/windows/smb/smb_relay✓ verified
    First seen Mar 31, 2001

    MS08-068 Microsoft Windows SMB Relay Code Execution

    Open source ↗

Related CVEs(same CWE)

Frequently asked(4)

What is CVE-2008-4037?
CVE-2008-4037 is a high vulnerability published on November 12, 2008. Microsoft Windows 2000 Gold through SP4, XP Gold through SP3, Server 2003 SP1 and SP2, Vista Gold and SP1, and Server 2008 allows remote SMB servers to execute arbitrary code on a client machine by replaying the NTLM credentials of a client user, as demonstrated by backrush, aka "SMB Credential…
When was CVE-2008-4037 disclosed?
CVE-2008-4037 was first published in the National Vulnerability Database on November 12, 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-2008-4037 actively exploited?
CVE-2008-4037 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 59% probability of exploitation in the next 30 days, which ranks it in the top 1.0% of all scored CVEs.
How do I remediate CVE-2008-4037?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2008-4037, 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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