CVE-2019-1593
Cisco NX-OS Software Bash Shell Role-Based Access Control Bypass Privilege Escalation Vulnerability
- Published
- Updated
- Reserved
- Assigned by
- cisco
Description
A vulnerability in the Bash shell implementation for Cisco NX-OS Software could allow an authenticated, local attacker to escalate their privilege level by executing commands authorized to other user roles. The attacker must authenticate with valid user credentials. The vulnerability is due to the incorrect implementation of a Bash shell command that allows role-based access control (RBAC) to be bypassed. An attacker could exploit this vulnerability by authenticating to the device and entering a crafted command at the Bash prompt. A successful exploit could allow the attacker to escalate their privilege level by executing commands that should be restricted to other roles. For example, a dev-ops user could escalate their privilege level to admin with a successful exploit of this vulnerability.
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)
- 0.39% · top 67% of all CVEs (6 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 · Nexus 3000 Series Switches
- affected unspecified – < 7.0(3)I7(4)
Cisco · Nexus 3500 Platform Switches
- affected unspecified – < 7.0(3)I7(4)
Cisco · Nexus 3600 Platform Switches
- affected unspecified – < 7.0(3)F3(5)
Cisco · Nexus 7000 and 7700 Series Switches
- affected unspecified – < 8.2(3)
Cisco · Nexus 9000 Series Fabric Switches in ACI Mode
- affected unspecified – < 13.2(4d)
- affected unspecified – < 14.0(1h)
Cisco · Nexus 9000 Series Switches in Standalone NX-OS Mode
- affected unspecified – < 7.0(3)I4(9)
- affected unspecified – < 7.0(3)I7(4)
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 Bash Shell Role-Based Access Control Bypass Privilege Escalation Vulnerability (opens in a new tab)vendor-advisoryx_refsource_CISCOx_transferred
- 107324 (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-2019-1593)Record last updated .