CVE-2018-0314

CRITICALNVD 9.89.8
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to NVD's CVSS score.

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2022-05-13. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, NVD CVSS v3
Trending — 3 sources updated this week
9.8EG
EchelonGraph verdictPlan mitigationRemediate within your standard update timelines at low or medium mission impact and sooner than that at high (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 5.9%CVSS: 9.8Exploit: None knownExposed services: Not assessed

No fix has been recorded since the CVE record was published in 2018 — use a compensating control (WAF / firewall / segmentation) and check the vendor's advisory.

A vulnerability in the Cisco Fabric Services (CFS) component of Cisco FXOS Software and Cisco NX-OS Software could allow an unauthenticated, remote attacker to execute arbitrary code on an affected device. The vulnerability exists because the affected software insufficiently validates Cisco Fabric Services packet headers when the software processes packet data. An attacker could exploit this vulnerability by sending a maliciously crafted Cisco Fabric Services packet to an affected device. A successful exploit could allow the attacker to cause a buffer overflow condition on the device, which could allow the attacker to execute arbitrary code on the device. This vulnerability affects the following if configured to use Cisco Fabric Services: Firepower 4100 Series Next-Generation Firewalls, Firepower 9300 Security Appliance, MDS 9000 Series Multilayer Switches, Nexus 2000 Series Fabric Extenders, Nexus 3000 Series Switches, Nexus 3500 Platform Switches, Nexus 5500 Platform Switches, Nexus 5600 Platform Switches, Nexus 6000 Series Switches, Nexus 7000 Series Switches, Nexus 7700 Series Switches, Nexus 9000 Series Switches in standalone NX-OS mode, Nexus 9500 R-Series Line Cards and Fabric Modules, UCS 6100 Series Fabric Interconnects, UCS 6200 Series Fabric Interconnects, UCS 6300 Series Fabric Interconnects. Cisco Bug IDs: CSCvd69943, CSCve02429, CSCve02433, CSCve02435, CSCve02445, CSCve04859.

CVSS v3
9.8
EG Score
9.8CRITICALmedium confidence
EG Risk
61
EG Risk 61/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity98% × 45%
Impact severity (EG Severity): CVSS 9.8 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation5.9% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability100% × 15%
CISA's SSVC Automatable value: yes (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Attend at high (mission-essential systems).
Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: No fix has been recorded since the CVE record was published in 2018. 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 check the vendor's advisory for a fix.
EPSS PROB
5.9%
EPSS %ILE
93rd
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (9.8): severity, escalated by confirmed exploitation. This CVE's 9.8 is its impact severity (EG Severity), not escalated.

EG Severity
9.8 CRITICALCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
5.9% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-22). FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track at medium mission impactTrack at low or medium mission impact; Attend at high (mission-essential systems).CISA BOD 26-04: 3 days if the affected system is publicly exposed; 60 days if it is not.Each input and its source: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Attend at high (mission-essential systems).

No fix has been recorded since the CVE record was published in 2018. 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 check the vendor's advisory for a fix.

Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)3 days if the affected system is publicly exposed; 60 days if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable yes (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

June 20, 2018

Last Modified

November 21, 2024

Advisory Details (3)

Auto-updated Oct 7, 2026
No fix on record since 2018.
Web page

Cisco FXOS and NX-OS Software Cisco Fabric Services Arbitrary Code Execution Vulnerability

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180620-fx-os-fabric-execution
Web page

CVE-2018-0314 - PSIRT.COM

http://www.securityfocus.com/bid/104516

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 18× in last 7d / 47× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 92 of 173 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. 8 repeat rows among the latest 100 are merged into the row they repeat. The 81 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-23 16:27 UTCEPSS rescoreEPSS 5.9% · 93rd percentile
  2. 2026-10-22 18:15 UTCEG score recompute
  3. 2026-10-22 18:15 UTCGHSA enrichmentGHSA-2vp6-fh8g-28xh · GitHub severity CRITICAL · GitHub CVSS 9.8
  4. 2026-10-22 16:27 UTCEPSS rescoreEPSS 5.9% · 93rd percentile
  5. 2026-10-21 17:22 UTCEG score recompute
  6. 2026-10-21 17:22 UTCGHSA enrichmentGHSA-2vp6-fh8g-28xh · GitHub severity CRITICAL · GitHub CVSS 9.8
  7. 2026-10-21 16:27 UTCEPSS rescoreEPSS 5.9% · 93rd percentile
  8. 2026-10-20 16:27 UTCEPSS rescoreEPSS 5.9% · 93rd percentile
  9. 2026-10-20 16:24 UTCEG score recompute
  10. 2026-10-20 16:23 UTCGHSA enrichmentGHSA-2vp6-fh8g-28xh · GitHub severity CRITICAL · GitHub CVSS 9.8
  11. 2026-10-19 16:26 UTCEPSS rescoreEPSS 5.9% · 93rd percentile
  12. 2026-10-19 15:29 UTCEG score recompute
  13. 2026-10-19 15:29 UTCGHSA enrichmentGHSA-2vp6-fh8g-28xh · GitHub severity CRITICAL · GitHub CVSS 9.8
  14. 2026-10-18 14:34 UTCGHSA enrichmentGHSA-2vp6-fh8g-28xh · GitHub severity CRITICAL · GitHub CVSS 9.8
  15. 2026-10-18 10:25 UTCEG score recompute
  16. 2026-10-17 16:27 UTCEPSS rescoreEPSS 5.9% · 93rd percentile
  17. 2026-10-17 13:41 UTCEG score recompute
  18. 2026-10-17 13:41 UTCGHSA enrichmentGHSA-2vp6-fh8g-28xh · GitHub severity CRITICAL · GitHub CVSS 9.8
  19. 2026-10-16 16:29 UTCEPSS rescoreEPSS 5.9% · 93rd percentile
  20. 2026-10-16 12:47 UTCEG score recompute
  21. 2026-10-16 12:46 UTCGHSA enrichmentGHSA-2vp6-fh8g-28xh · GitHub severity CRITICAL · GitHub CVSS 9.8
  22. 2026-10-15 16:27 UTCEPSS rescoreEPSS 5.9% · 93rd percentile
  23. 2026-10-15 11:52 UTCEG score recompute
  24. 2026-10-15 11:52 UTCGHSA enrichmentGHSA-2vp6-fh8g-28xh · GitHub severity CRITICAL · GitHub CVSS 9.8
  25. 2026-10-14 16:27 UTCEPSS rescoreEPSS 5.9% · 93rd percentile
Show 67 more
  1. 2026-10-14 07:22 UTCEG score recompute
  2. 2026-10-14 07:21 UTCGHSA enrichmentGHSA-2vp6-fh8g-28xh · GitHub severity CRITICAL · GitHub CVSS 9.8
  3. 2026-10-13 16:27 UTCEPSS rescoreEPSS 5.9% · 93rd percentile
  4. 2026-10-13 02:37 UTCGHSA enrichmentGHSA-2vp6-fh8g-28xh · GitHub severity CRITICAL · GitHub CVSS 9.8
  5. 2026-10-12 20:23 UTCEG score recompute
  6. 2026-10-12 16:28 UTCEPSS rescoreEPSS 5.9% · 93rd percentile
  7. 2026-10-12 00:46 UTCEG score recompute
  8. 2026-10-11 13:41 UTCEPSS rescoreEPSS 5.9% · 93rd percentile
  9. 2026-10-10 19:55 UTCEPSS rescoreEPSS 5.9% · 93rd percentile
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  14. 2026-10-05 17:39 UTCEPSS rescoreEPSS 5.9% · 93rd percentile
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  16. 2026-09-30 14:59 UTCEPSS rescoreEPSS 5.9% · 92nd percentile
  17. 2026-09-30 09:49 UTCEG score recompute
  18. 2026-09-28 13:45 UTCEPSS rescoreEPSS 5.9% · 92nd percentile
  19. 2026-09-27 13:40 UTCEPSS rescoreEPSS 5.9% · 92nd percentile
  20. 2026-09-26 15:53 UTCEPSS rescoreEPSS 5.9% · 92nd percentile
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  24. 2026-09-21 20:27 UTCEPSS rescoreEPSS 5.1% · 92nd percentile
  25. 2026-09-20 20:09 UTCEPSS rescoreEPSS 5.9% · 92nd percentile
  26. 2026-09-19 15:36 UTCEPSS rescoreEPSS 5.9% · 92nd percentile
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  39. 2026-08-27 14:21 UTCEPSS rescoreEPSS 5.9% · 92nd percentile
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  41. 2026-08-25 13:44 UTCEPSS rescoreEPSS 5.9% · 92nd percentile
  42. 2026-08-23 00:14 UTCEPSS rescoreEPSS 6.0% · 92nd percentile
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  44. 2026-08-19 16:59 UTCEPSS rescoreEPSS 6.0% · 92nd percentile
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  61. 2026-07-23 01:31 UTCEG score recompute
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  63. 2026-07-22 14:04 UTCEPSS rescoreEPSS 6.0% · 92nd percentile
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  67. 2026-07-19 02:26 UTCEPSS rescoreEPSS 6.0% · 92nd percentile

Frequently asked(5)

What is CVE-2018-0314?
CVE-2018-0314 is a critical-severity vulnerability; its CVE record was published on June 20, 2018. A vulnerability in the Cisco Fabric Services (CFS) component of Cisco FXOS Software and Cisco NX-OS Software could allow an unauthenticated, remote attacker to execute arbitrary code on an affected device. The vulnerability exists because the affected software insufficiently validates Cisco Fabric…
When was CVE-2018-0314 made public?
CVE-2018-0314 was made public on June 20, 2018: that is the date its CVE record's CNA, Cisco Systems, Inc., gives for when the vulnerability was made public. The CVE record itself was published on June 20, 2018. EchelonGraph's copy of the record carries a last-modified date of November 21, 2024; the record at its source may have been updated since.
Is CVE-2018-0314 actively exploited?
CVE-2018-0314 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 5.9% probability of exploitation in the next 30 days (93rd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2018-0314?
CVE-2018-0314 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2018-0314?
No fix for CVE-2018-0314 has been recorded since its CVE record was published in 2018. 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 check the vendor's advisory for a fix.

Dependency Blast Radius

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