CVE-2018-0164

HIGHNVD 8.68.6—
EchelonGraph scoreMEDIUM confidence

Score 8.6 from GitHub Security Advisory (severity: HIGH) published 2022-05-13. NVD baseline CVSS 8.6; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
8.6EG
EchelonGraph verdictPlan mitigationSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1.8%CVSS: 8.6Exploit: None knownExposed services: Not assessed

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

A vulnerability in the Switch Integrated Security Features of Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause an interface queue wedge. The vulnerability is due to incorrect handling of crafted IPv6 packets. An attacker could exploit this vulnerability by sending crafted IPv6 packets through the device. An exploit could allow the attacker to cause an interface queue wedge. This vulnerability affects the Cisco cBR-8 Converged Broadband Router, Cisco ASR 1000 Series Aggregation Services Routers, and Cisco Cloud Services Router 1000V Series when configured with IPv6. In the field and internal testing, this vulnerability was only observed or reproduced on the Cisco cBR-8 Converged Broadband Router. The Cisco ASR 1000 Series Aggregation Services Routers and Cisco Cloud Services Router 1000V Series contain the same code logic, so affected trains have had the code fix applied; however, on these two products, the vulnerability has not been observed in the field or successfully reproduced internally. Cisco Bug IDs: CSCvd75185.

CVSS v3
8.6
EG Score
8.6HIGHmedium confidence
EG Risk
54
EG Risk 54/100CISA SSVC

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
Severity86% × 45%
Exploitation2% × 40%
Automatability100% × 15%
CISA SSVC: Track at low or medium mission impact; Attend at high (mission-essential systems).
Action: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high, and watch the vendor's advisory for the fix.
EPSS PROB
1.8%
EPSS %ILE
78th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Attend at high (mission-essential systems).

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high, and watch the vendor's advisory for the fix.

Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

March 28, 2018

Last Modified

November 21, 2024

Advisory Details (2)

Auto-updated Sep 1, 2026
No fix on record yet.
generic

Cisco IOS XE Software Switch Integrated Security Features IPv6 Denial of Service Vulnerability

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180328-sisf
generic

CVE-2018-0164 - PSIRT.COM

http://www.securityfocus.com/bid/103553

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 6× in last 7d / 24× 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 154 total refreshes for this CVE.

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

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Frequently asked(5)

What is CVE-2018-0164?
CVE-2018-0164 is a high vulnerability published on March 28, 2018. A vulnerability in the Switch Integrated Security Features of Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause an interface queue wedge. The vulnerability is due to incorrect handling of crafted IPv6 packets. An attacker could exploit this vulnerability by sending…
When was CVE-2018-0164 disclosed?
CVE-2018-0164 was first published on March 28, 2018, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2018-0164 actively exploited?
CVE-2018-0164 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1.8% probability of exploitation in the next 30 days (78th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2018-0164?
CVE-2018-0164 has a CVSS v3 base score of 8.6 (NVD).
How do I remediate CVE-2018-0164?
No fix for CVE-2018-0164 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix.

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