CVE-2018-7445

CRITICALNVD 9.89.8—
EchelonGraph scoreHIGH confidence

Score elevated to 9.8 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2022-09-08), indicating real-world exploitation has been confirmed by US federal agencies. NVD baseline CVSS 9.8 retained for reference. Confidence: HIGH.

Triggered by: CISA KEV (actively exploited)
Sources: cisa_kev, epss, ghsa, nvd
Trending — 4 sources updated this weekExploited in the wild
9.8EG
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS PROB: 61%CVSS: 9.8Exploit: cisa kev · ssvc active · 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.

A buffer overflow was found in the MikroTik RouterOS SMB service when processing NetBIOS session request messages. Remote attackers with access to the service can exploit this vulnerability and gain code execution on the system. The overflow occurs before authentication takes place, so it is possible for an unauthenticated remote attacker to exploit it. All architectures and all devices running RouterOS before versions 6.41.3/6.42rc27 are vulnerable.

CVSS v3
9.8
EG Score
9.8(high)
EG Risk
99(Act)
EG Risk 99/100SSVC: Act

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
Severity98% × 45%
Exploitation100% × 40%
Automatability100% × 15%
Action: Fix now — active exploitation, automatable, high impact.
EPSS PROB
61%
EPSS %ILE
99%
KEV
⚠ Exploited

Published

March 19, 2018

Last Modified

November 7, 2025

Advisory Details (4)

Auto-updated Sep 3, 2026
⚠️ Active exploitation confirmed. Patch available. Sources: cisa.
cisa Patch Available🔴 Active Exploitation

Known Exploited Vulnerabilities Catalog | CISA

Known Exploited Vulnerabilities Catalog | CISA. Listed in CISA Known Exploited Vulnerabilities catalog.

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-7445
generic🟡 PoC Available

MikroTik RouterOS < 6.41.3/6.42rc27 - SMB Buffer Overflow - Hardware remote Exploit

https://www.exploit-db.com/exploits/44290/
generic🔴 Active Exploitation

CVE-2018-7445 - PSIRT.COM

http://www.securityfocus.com/bid/103427
generic🟡 PoC Available

Full Disclosure: [CORE-2018-0003] MikroTik RouterOS SMB Buffer Overflow

http://seclists.org/fulldisclosure/2018/Mar/38

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 52× in last 7d / 243× 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 780 total refreshes for this CVE.

  1. 2026-09-08 07:21 UTCGHSA enrichment
  2. 2026-09-08 03:29 UTCGHSA enrichment
  3. 2026-09-07 23:36 UTCGHSA enrichment
  4. 2026-09-07 19:44 UTCGHSA enrichment
  5. 2026-09-07 15:51 UTCGHSA enrichment
  6. 2026-09-07 11:59 UTCGHSA enrichment
  7. 2026-09-07 08:04 UTCGHSA enrichment
  8. 2026-09-07 04:11 UTCGHSA enrichment
  9. 2026-09-07 00:15 UTCGHSA enrichment
  10. 2026-09-06 20:22 UTCGHSA enrichment
  11. 2026-09-06 16:30 UTCEG score recompute
  12. 2026-09-06 16:30 UTCGHSA enrichment
  13. 2026-09-06 13:44 UTCEPSS rescore
  14. 2026-09-06 12:37 UTCGHSA enrichment
  15. 2026-09-06 08:42 UTCGHSA enrichment
  16. 2026-09-06 04:50 UTCGHSA enrichment
  17. 2026-09-06 00:58 UTCGHSA enrichment
  18. 2026-09-05 21:04 UTCGHSA enrichment
  19. 2026-09-05 17:12 UTCEG score recompute
  20. 2026-09-05 17:11 UTCGHSA enrichment
  21. 2026-09-05 13:19 UTCGHSA enrichment
  22. 2026-09-05 09:27 UTCGHSA enrichment
  23. 2026-09-05 05:35 UTCGHSA enrichment
  24. 2026-09-05 01:43 UTCGHSA enrichment
  25. 2026-09-04 21:51 UTCGHSA enrichment
Show 75 more
  1. 2026-09-04 17:59 UTCGHSA enrichment
  2. 2026-09-04 17:38 UTCCISA KEV update
  3. 2026-09-04 14:07 UTCEG score recompute
  4. 2026-09-04 14:06 UTCGHSA enrichment
  5. 2026-09-04 13:56 UTCEPSS rescore
  6. 2026-09-04 10:13 UTCGHSA enrichment
  7. 2026-09-04 06:21 UTCGHSA enrichment
  8. 2026-09-04 02:29 UTCGHSA enrichment
  9. 2026-09-03 22:37 UTCGHSA enrichment
  10. 2026-09-03 18:43 UTCGHSA enrichment
  11. 2026-09-03 14:48 UTCGHSA enrichment
  12. 2026-09-03 10:54 UTCGHSA enrichment
  13. 2026-09-03 07:00 UTCGHSA enrichment
  14. 2026-09-03 03:07 UTCGHSA enrichment
  15. 2026-09-02 23:15 UTCGHSA enrichment
  16. 2026-09-02 19:22 UTCGHSA enrichment
  17. 2026-09-02 17:33 UTCCISA KEV update
  18. 2026-09-02 15:26 UTCEG score recompute
  19. 2026-09-02 15:25 UTCGHSA enrichment
  20. 2026-09-02 14:07 UTCEPSS rescore
  21. 2026-09-02 11:27 UTCGHSA enrichment
  22. 2026-09-02 07:34 UTCGHSA enrichment
  23. 2026-09-02 03:42 UTCGHSA enrichment
  24. 2026-09-01 23:48 UTCGHSA enrichment
  25. 2026-09-01 19:56 UTCGHSA enrichment
  26. 2026-09-01 16:03 UTCGHSA enrichment
  27. 2026-09-01 12:11 UTCGHSA enrichment
  28. 2026-09-01 08:18 UTCGHSA enrichment
  29. 2026-09-01 04:25 UTCGHSA enrichment
  30. 2026-09-01 00:29 UTCGHSA enrichment
  31. 2026-08-31 20:37 UTCGHSA enrichment
  32. 2026-08-31 16:44 UTCGHSA enrichment
  33. 2026-08-31 14:19 UTCCISA KEV update
  34. 2026-08-31 12:52 UTCGHSA enrichment
  35. 2026-08-31 08:56 UTCGHSA enrichment
  36. 2026-08-31 05:03 UTCGHSA enrichment
  37. 2026-08-31 01:11 UTCGHSA enrichment
  38. 2026-08-30 21:19 UTCEG score recompute
  39. 2026-08-30 21:19 UTCGHSA enrichment
  40. 2026-08-30 19:13 UTCEPSS rescore
  41. 2026-08-30 17:27 UTCGHSA enrichment
  42. 2026-08-30 13:34 UTCGHSA enrichment
  43. 2026-08-30 09:41 UTCGHSA enrichment
  44. 2026-08-30 05:48 UTCGHSA enrichment
  45. 2026-08-30 01:55 UTCEG score recompute
  46. 2026-08-30 01:55 UTCGHSA enrichment
  47. 2026-08-30 01:18 UTCEPSS rescore
  48. 2026-08-29 22:02 UTCGHSA enrichment
  49. 2026-08-29 18:10 UTCGHSA enrichment
  50. 2026-08-29 14:16 UTCGHSA enrichment
  51. 2026-08-29 10:23 UTCGHSA enrichment
  52. 2026-08-29 06:31 UTCGHSA enrichment
  53. 2026-08-29 02:37 UTCGHSA enrichment
  54. 2026-08-28 22:42 UTCEG score recompute
  55. 2026-08-28 22:42 UTCGHSA enrichment
  56. 2026-08-28 21:36 UTCEPSS rescore
  57. 2026-08-28 18:46 UTCGHSA enrichment
  58. 2026-08-28 14:52 UTCGHSA enrichment
  59. 2026-08-28 10:57 UTCGHSA enrichment
  60. 2026-08-28 07:03 UTCGHSA enrichment
  61. 2026-08-28 03:09 UTCGHSA enrichment
  62. 2026-08-27 23:15 UTCGHSA enrichment
  63. 2026-08-27 19:23 UTCGHSA enrichment
  64. 2026-08-27 17:22 UTCCISA KEV update
  65. 2026-08-27 15:31 UTCEG score recompute
  66. 2026-08-27 15:31 UTCGHSA enrichment
  67. 2026-08-27 14:21 UTCEPSS rescore
  68. 2026-08-27 11:37 UTCGHSA enrichment
  69. 2026-08-27 07:45 UTCGHSA enrichment
  70. 2026-08-27 03:52 UTCGHSA enrichment
  71. 2026-08-26 23:58 UTCGHSA enrichment
  72. 2026-08-26 20:05 UTCGHSA enrichment
  73. 2026-08-26 17:41 UTCCISA KEV update
  74. 2026-08-26 16:10 UTCEG score recompute
  75. 2026-08-26 16:10 UTCGHSA enrichment

Publicly available exploits

(1 reference)

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

  • Exploit-DBEDB-44290
    First seen Mar 15, 2018

    MikroTik RouterOS < 6.41.3/6.42rc27 - SMB Buffer Overflow

    Open source ↗

Frequently asked(6)

What is CVE-2018-7445?
CVE-2018-7445 is a critical vulnerability published on March 19, 2018. A buffer overflow was found in the MikroTik RouterOS SMB service when processing NetBIOS session request messages. Remote attackers with access to the service can exploit this vulnerability and gain code execution on the system. The overflow occurs before authentication takes place, so it is…
When was CVE-2018-7445 disclosed?
CVE-2018-7445 was first published in the National Vulnerability Database on March 19, 2018, with the most recent update on November 7, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2018-7445 actively exploited?
Yes. CISA added CVE-2018-7445 to the Known Exploited Vulnerabilities catalog on September 8, 2022, affecting MikroTik RouterOS. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.
What is the CVSS score of CVE-2018-7445?
CVE-2018-7445 has a CVSS v3 base score of 9.8 (NVD).
Which products are affected by CVE-2018-7445?
CVE-2018-7445 affects MikroTik RouterOS. The full affected-products list, including version ranges and fixed versions, is shown in the Affected Packages section of this page.
How do I remediate CVE-2018-7445?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2018-7445, 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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