CVE-2019-1601
Cisco NX-OS Software Unauthorized Filesystem Access Vulnerability
- Published
- Updated
- Reserved
- Assigned by
- cisco
Description
A vulnerability in the filesystem permissions of Cisco NX-OS Software could allow an authenticated, local attacker to gain read and write access to a critical configuration file. The vulnerability is due to a failure to impose strict filesystem permissions on the targeted device. An attacker could exploit this vulnerability by accessing and modifying restricted files. A successful exploit could allow an attacker to use the content of this configuration file to bypass authentication and log in as any user of the device. MDS 9000 Series Multilayer Switches are affected in versions prior to 6.2(25), 8.1(1b), and 8.3(1). Nexus 3000 Series Switches are affected in versions prior to 7.0(3)I4(9) and 7.0(3)I7(4). Nexus 3500 Platform Switches are affected in versions prior to 6.0(2)A8(10) and 7.0(3)I7(4). Nexus 3600 Platform Switches are affected in versions prior to 7.0(3)F3(5). Nexus 2000, 5500, 5600, and 6000 Series Switches are affected in versions prior to 7.1(5)N1(1b) and 7.3(3)N1(1). Nexus 7000 and 7700 Series Switches are affected in versions prior to 6.2(22), 7.3(3)D1(1), and 8.2(3). Nexus 9000 Series Switches-Standalone are affected in versions prior to 7.0(3)I4(9) and 7.0(3)I7(4). Nexus 9500 R-Series Line Cards and Fabric Modules are affected in versions prior to 7.0(3)F3(5).
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| ciscoCNA (assigner) | 3.0 | High7.8 | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVDNVD · Modified | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.40% · top 66% of all CVEs (5 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: total
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.
Weakness
Affected products
Cisco · MDS 9000 Series Multilayer Switches
- affected unspecified – < 6.2(25)
- affected unspecified – < 8.1(1b)
- affected unspecified – < 8.3(1)
Cisco · Nexus 3000 Series Switches
- affected unspecified – < 7.0(3)I4(9)
- affected unspecified – < 7.0(3)I7(4)
Cisco · Nexus 3500 Platform Switches
- affected unspecified – < 6.0(2)A8(10)
- affected unspecified – < 7.0(3)I7(4)
Cisco · Nexus 3600 Platform Switches
- affected unspecified – < 7.0(3)F3(5)
Cisco · Nexus 2000, 5500, 5600, and 6000 Series Switches
- affected unspecified – < 7.1(5)N1(1b)
- affected unspecified – < 7.3(3)N1(1)
Cisco · Nexus 7000 and 7700 Series Switches
- affected unspecified – < 6.2(22)
- affected unspecified – < 7.3(3)D1(1)
- affected unspecified – < 8.2(3)
Cisco · Nexus 9000 Series Switches-Standalone
- affected unspecified – < 7.0(3)I4(9)
- affected unspecified – < 7.0(3)I7(4)
Cisco · Nexus 9500 R-Series Line Cards and Fabric Modules
- affected unspecified – < 7.0(3)F3(5)
What to do
Exploitation: The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory.
References (2)
- 20190306 Cisco NX-OS Software Unauthorized Filesystem Access Vulnerability (opens in a new tab)vendor-advisoryx_refsource_CISCOx_transferred
- 107404 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2019-1601)Record last updated .