CVE-2018-15390

MEDIUMNVD 6.86.8—
EchelonGraph scoreMEDIUM confidence

Score 6.8 from GitHub Security Advisory (severity: HIGH) published 2022-05-13. NVD baseline CVSS 6.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
6.8EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 6.8Exploit: None knownExposed: 0

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

A vulnerability in the FTP inspection engine of Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause an affected device to reload, resulting in a denial of service (DoS) condition. The vulnerability exists because the affected software fails to release spinlocks when a device is running low on system memory, if the software is configured to apply FTP inspection and an access control rule to transit traffic, and the access control rule is associated with an FTP file policy. An attacker could exploit this vulnerability by sending a high rate of transit traffic through an affected device to cause a low-memory condition on the device. A successful exploit could allow the attacker to cause a software panic on the affected device, which could cause the device to reload and result in a temporary DoS condition.

CVSS v3
6.8
EG Score
6.8(medium)
EG Risk
31(Track)
EG Risk 31/100SSVC: 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
Severity68% × 45%
Exploitation1% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
64%
KEV
Not listed

Published

October 5, 2018

Last Modified

August 11, 2026

Advisory Details (2)

Auto-updated Aug 11, 2026
No patch confirmed yet.
generic

Cisco Firepower Threat Defense Software FTP Inspection Denial of Service Vulnerability

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20181003-ftd-inspect-dos
generic

SecurityFocus

http://www.securityfocus.com/bid/105519

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 8× in last 7d / 28× 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 135 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2018-15390?
CVE-2018-15390 is a medium vulnerability published on October 5, 2018. A vulnerability in the FTP inspection engine of Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause an affected device to reload, resulting in a denial of service (DoS) condition. The vulnerability exists because the affected software fails to…
When was CVE-2018-15390 disclosed?
CVE-2018-15390 was first published in the National Vulnerability Database on October 5, 2018, with the most recent update on August 11, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2018-15390 actively exploited?
CVE-2018-15390 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 36.0% of all scored CVEs.
What is the CVSS score of CVE-2018-15390?
CVE-2018-15390 has a CVSS v3 base score of 6.8 (NVD).
How do I remediate CVE-2018-15390?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2018-15390, 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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