CVE-2019-1730 json
Cisco NX-OS Software Bash Bypass Guest Shell Vulnerability
published 7y ago modified 4mo ago also EUVD-2019-10287
- cvss
- 6.0
- version 3.0, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 34%
- public exploits
- 0
- none known
Summary
A vulnerability in the Bash shell implementation for Cisco NX-OS Software could allow an authenticated, local attacker to bypass the limited command set of the restricted Guest Shell and execute commands at the privilege level of a network-admin user outside of the Guest Shell. The attacker must authenticate with valid administrator device credentials. The vulnerability is due to the incorrect implementation of a CLI command that allows a Bash command to be incorrectly invoked on the Guest Shell CLI. An attacker could exploit this vulnerability by authenticating to the device and entering a crafted command at the Guest Shell prompt. A successful exploit could allow the attacker to issue commands that should be restricted by a Guest Shell account.
Patch / fix
- Cisco Cisco NX-OS Software 8.3(1)
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- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- last yr.
Exploit prediction
0.40% chance of exploitation in the next 30 days, higher than 34% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.0 | 6.0 | CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H |
| NVD | 3.1 | 6.7 | CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 7.2 | AV:L/AC:L/Au:N/C:C/I:C/A:C |
Affected products
- Cisco Cisco NX-OS Software
Classification
- Weakness
-
- CWE-264 Permissions, Privileges, and Access Controls
References
-
tools.cisco.com
/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190515-nxos-bash-bypass
vendor-advisory
-
securityfocus.com
/bid/108397
vdb-entry, third-party-advisory
Sources
- CVE List CVE-2019-1730
- NVD CVE-2019-1730
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