A vulnerability in the Telnet CLI command of Cisco NX-OS System Software 7.1 through 7.3 running on Cisco Nexus Series Switches could allow an authenticated, local attacker to perform a command injection attack
Published May 22, 2017
7.8
HIGHCVSS 3.0
EPSS 0.91%
Description
A vulnerability in the Telnet CLI command of Cisco NX-OS System Software 7.1 through 7.3 running on Cisco Nexus Series Switches could allow an authenticated, local attacker to perform a command injection attack. The vulnerability is due to insufficient input validation of command arguments. An attacker could exploit this vulnerability by injecting crafted command arguments into the Telnet CLI command. An exploit could allow the attacker to read or write arbitrary files at the user's privilege level outside of the user's path. Cisco Bug IDs: CSCvb86771.
Affected products
- Vendor n/a Product Cisco Nexus Series Switches Defaultn/a
- Version Cisco Nexus Series SwitchesStatusaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| n/a | Cisco Nexus Series Switches | n/a |
|
- 7.1\(1\)n1\(1\)
- 7.1\(2\)n1\(1\)
- 7.1\(3\)n1\(1\)
- 7.1\(3\)n1\(2\)
- 7.1\(3\)n1\(2.1\)
- 7.1\(3\)n1\(3.12\)
- 7.1\(4\)n1\(1\)
- 7.2\(0\)d1\(0.437\)
- 7.2\(0\)n1\(1\)
- 7.2\(0\)zz\(99.1\)
- 7.2\(1\)n1\(1\)
- 7.3\(0\)n1\(1\)
Running on/with
- n/a
- n/a
- n/a
- n/a
- n/a
- n/a
- n/a
- n/a
- n/a
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
AV:L/AC:L/Au:N/C:P/I:P/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Table of values (8 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.91% (0.00909) | 58.49th | v5 (v2026.06.15) |
| Sep 20, 2026 | 0.91% (0.00909) | 58.40th | v5 (v2026.06.15) |
| Jul 20, 2024 | 0.04% (0.00042) | 5.06th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.04% (0.00042) | 5.63th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.01% (0.01011) | 38.12th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.01% (0.01011) | 17.94th | v2 (v2022.01.01) |
| Feb 3, 2022 | 0.44% (0.00444) | 10.84th | v5 (v2026.06.15) |
| Apr 14, 2021 | 0.44% (0.00444) | 0.00th | v1 |
References (3)
- http://www.securityfocus.com/bid/98528 vdb-entryx_refsource_BIDThird Party AdvisoryVendor Advisory
- http://www.securitytracker.com/id/1038518 vdb-entryx_refsource_SECTRACK
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170517-nss1 x_refsource_CONFIRMVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| http://www.securityfocus.com/bid/98528 | vdb-entryx_refsource_BIDThird Party AdvisoryVendor Advisory | |
| http://www.securitytracker.com/id/1038518 | vdb-entryx_refsource_SECTRACK | |
| https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170517-nss1 | x_refsource_CONFIRMVendor Advisory |
Change history (0)
No recorded changes yet.