CVE-2018-0301
No exploitation reported by the sources we read.
- Published2018-06-20
- Fixed in8.1\(1\) · 7.3\(3\)n1\(1\) · 7.3\(2\)d1\(1\) · 7.0\(3\)i4 · 7.0\(3\)i7\(1\)
- WeaknessCWE-119 · CWE-20
Am I affected?
Debian, Ubuntu or Red Hat sometimes backport a fix without changing the upstream version number: such a version reads « to verify », never « affected ».With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.
Description
A vulnerability in the NX-API feature of Cisco NX-OS Software could allow an unauthenticated, remote attacker to craft a packet to the management interface on an affected system, causing a buffer overflow. The vulnerability is due to incorrect input validation in the authentication module of the NX-API subsystem. An attacker could exploit this vulnerability by sending a crafted HTTP or HTTPS packet to the management interface of an affected system with the NX-API feature enabled. An exploit could allow the attacker to execute arbitrary code as root. Note: NX-API is disabled by default. This vulnerability affects: 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. Cisco Bug IDs: CSCvd45804, CSCve02322, CSCve02412.
Timeline
dates in UTC- 2018-06-2021:29CVE publishedNVD
- 2026-10-2319:23EPSS crossed 10 %FIRST EPSS
Observed activity
isMalicious corpus · updated 2026-10-23 18:48 UTCBlock these indicators
- Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2018-0301?format=txt
- CSV export: https://api.ismalicious.com/edl/cve/CVE-2018-0301?format=csv
- TAXII collection of exploited CVEs
- The EDL and CSV take an API key on the Pro plan.
Versions per branch
NVD| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 8.x | ≥ 8.0, < 8.1\(1\) | 8.1\(1\) | NVD |
| 8.1 | ≥ 7.3, < 8.1\(1\) | 8.1\(1\) | NVD |
| 7.3 | ≥ 6.0, < 7.3\(3\)n1\(1\) | 7.3\(3\)n1\(1\) | NVD |
| 7.x | ≥ 7.2, < 7.3\(2\)d1\(1\) | 7.3\(2\)d1\(1\) | NVD |
| 7.3 | ≥ 7.3, < 7.3\(3\)n1\(1\) | 7.3\(3\)n1\(1\) | NVD |
| 7.0 | < 7.0\(3\)i4 | 7.0\(3\)i4 | NVD |
| 7.0 | ≥ 7.0\(3\)i5, < 7.0\(3\)i7\(1\) | 7.0\(3\)i7\(1\) | NVD |
| 8.1 | = 8.1 | no fix published | NVD |
| 8.2 | = 8.2 | no fix published | NVD |
| 7.0 | = 7.0\(3\)i7 | no fix published | NVD |
| 6.0 | = 6.0 | no fix published | NVD |
| 7.0 | = 7.0 | no fix published | NVD |
as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.
Fix
- Update Cisco nx-os to 8.1\(1\) · 7.3\(3\)n1\(1\) · 7.3\(2\)d1\(1\) · 7.0\(3\)i4 · 7.0\(3\)i7\(1\)
Advisories and patches
- tools.cisco.comVendor Advisory
Detection
- Nuclei template
- none so far ProjectDiscovery
- Exploit-DB
- no entry Exploit-DB
- Proof-of-concept repositories
- none listed PoC-in-GitHub
Sources
Technical details
- CVSS v3 Vector
- CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Published
- 2018-06-20
- Last Modified
- 2026-06-17
- NVD status
- Modified
Frequently asked questions
What is CVE-2018-0301?
Is CVE-2018-0301 actively exploited?
What is the CVSS score for CVE-2018-0301?
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Surveillance reads the versions in your stack — a domain, a lockfile or a list — checks each CVE against the ranges its sources publish, and alerts you when one you run is exploited or enters CISA KEV. A version it cannot read stays « version not verified ».
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Related vulnerabilities
Same product first, then the same vendor advisory and the same publication week.