CVE-2018-0154

HIGHNVD 7.59.0▲
EchelonGraph scoreHIGH confidence

Score elevated to 9.0 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2022-03-03), indicating real-world exploitation has been confirmed by US federal agencies. NVD baseline CVSS 7.5 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
7.5
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS: 7%CVSS: 7.5Exploit: NoneExposed: 0

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

A vulnerability in the crypto engine of the Cisco Integrated Services Module for VPN (ISM-VPN) running Cisco IOS Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to insufficient handling of VPN traffic by the affected device. An attacker could exploit this vulnerability by sending crafted VPN traffic to an affected device. A successful exploit could allow the attacker to cause the affected device to hang or crash, resulting in a DoS condition. Cisco Bug IDs: CSCvd39267.

CVSS v3
7.5
EG Score
9.0(high)
EPSS
93.7%
KEV
⚠ Exploited

Published

March 28, 2018

Last Modified

January 13, 2026

Advisory Details (4)

Auto-updated Jun 5, 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-2018-0154
generic🔴 Active Exploitation

Cisco IOS Software Integrated Services Module for VPN Denial of Service Vulnerability

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180328-dos
generic
http://www.securitytracker.com/id/1040585
generic
http://www.securityfocus.com/bid/103559

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 59× in last 7d / 232× 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 414 total refreshes for this CVE.

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

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Frequently asked(6)

What is CVE-2018-0154?
CVE-2018-0154 is a high vulnerability published on March 28, 2018. A vulnerability in the crypto engine of the Cisco Integrated Services Module for VPN (ISM-VPN) running Cisco IOS Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to insufficient handling of VPN…
When was CVE-2018-0154 disclosed?
CVE-2018-0154 was first published in the National Vulnerability Database on March 28, 2018, with the most recent update on January 13, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2018-0154 actively exploited?
Yes. CISA added CVE-2018-0154 to the Known Exploited Vulnerabilities catalog on March 3, 2022, affecting Cisco IOS Software. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.
What is the CVSS score of CVE-2018-0154?
CVE-2018-0154 has a CVSS v3 base score of 7.5 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.0.
Which products are affected by CVE-2018-0154?
CVE-2018-0154 affects Cisco IOS Software. 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-2018-0154?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2018-0154, 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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