CVE-2018-0300

HIGHNVD 7.27.2—
EchelonGraph scoreMEDIUM confidence

Score 7.2 from GitHub Security Advisory (severity: HIGH) published 2022-05-13. NVD baseline CVSS 7.2; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
7.2EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 7%CVSS: 7.2Exploit: 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 process of uploading new application images to Cisco FXOS on the Cisco Firepower 4100 Series Next-Generation Firewall (NGFW) and Firepower 9300 Security Appliance could allow an authenticated, remote attacker using path traversal techniques to create or overwrite arbitrary files on an affected device. The vulnerability is due to insufficient validation during the application image upload process. An attacker could exploit this vulnerability by creating an application image containing malicious code and installing the image on the affected device using the CLI or web-based user interface (web UI). These actions occur prior to signature verification and could allow the attacker to create and execute arbitrary code with root privileges. Note: A missing or invalid signature in the application image will cause the upload process to fail, but does not prevent the exploit. Cisco Bug IDs: CSCvc21901.

CVSS v3
7.2
EG Score
7.2(medium)
EG Risk
35(Track)
EG Risk 35/100SSVC: 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
Severity72% × 45%
Exploitation7% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
7%
EPSS %ILE
94%
KEV
Not listed

Published

June 21, 2018

Last Modified

November 21, 2024

References (4)

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 7× in last 7d / 39× 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.

  1. 2026-07-26 14:51 UTCEPSS rescore
  2. 2026-07-26 14:51 UTCEPSS rescore
  3. 2026-07-23 14:15 UTCEPSS rescore
  4. 2026-07-23 01:31 UTCEG score recompute
  5. 2026-07-22 22:11 UTCEG score recompute
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  1. 2026-07-08 15:11 UTCEPSS rescore
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  44. 2026-06-07 15:22 UTCEPSS rescore
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  64. 2026-05-28 06:26 UTCEG score recompute
  65. 2026-05-28 06:26 UTCGHSA enrichment
  66. 2026-05-27 13:38 UTCEPSS rescore
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  68. 2026-05-26 13:42 UTCEPSS rescore
  69. 2026-05-26 07:17 UTCEPSS rescore
  70. 2026-05-26 07:17 UTCEPSS rescore

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Frequently asked(5)

What is CVE-2018-0300?
CVE-2018-0300 is a high vulnerability published on June 21, 2018. A vulnerability in the process of uploading new application images to Cisco FXOS on the Cisco Firepower 4100 Series Next-Generation Firewall (NGFW) and Firepower 9300 Security Appliance could allow an authenticated, remote attacker using path traversal techniques to create or overwrite arbitrary…
When was CVE-2018-0300 disclosed?
CVE-2018-0300 was first published in the National Vulnerability Database on June 21, 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-2018-0300 actively exploited?
CVE-2018-0300 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 7% probability of exploitation in the next 30 days, which ranks it in the top 6.2% of all scored CVEs.
What is the CVSS score of CVE-2018-0300?
CVE-2018-0300 has a CVSS v3 base score of 7.2 (NVD).
How do I remediate CVE-2018-0300?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2018-0300, 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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