CVE-2018-0154

CRITICALNVD 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
9.0EG
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS PROB: 7%CVSS: 7.5Exploit: cisa kev · ssvc activeExposed: 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)
EG Risk
96(Attend)
EG Risk 96/100SSVC: Attend

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
Severity90% × 45%
Exploitation100% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
7%
EPSS %ILE
94%
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 40× in last 7d / 216× 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 432 total refreshes for this CVE.

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

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Frequently asked(6)

What is CVE-2018-0154?
CVE-2018-0154 is a critical 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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