CVE-2019-1965
No exploitation reported by the sources we read.
- Published2019-08-28
- Fixed in9.2 · 9.2\(3\) · 8.4 · 8.2\(3\) · 7.3\(5\)n1\(1\) · 7.3\(4\)d1\(1\)
- WeaknessCWE-400 · CWE-772
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 Virtual Shell (VSH) session management for Cisco NX-OS Software could allow an authenticated, remote attacker to cause a VSH process to fail to delete upon termination. This can lead to a build-up of VSH processes that overtime can deplete system memory. When there is no system memory available, this can cause unexpected system behaviors and crashes. The vulnerability is due to the VSH process not being properly deleted when a remote management connection to the device is disconnected. An attacker could exploit this vulnerability by repeatedly performing a remote management connection to the device and terminating the connection in an unexpected manner. A successful exploit could allow the attacker to cause the VSH processes to fail to delete, which can lead to a system-wide denial of service (DoS) condition. The attacker must have valid user credentials to log in to the device using the remote management connection.
Timeline
dates in UTC- 2019-08-2819:15CVE publishedNVD
Observed activity
isMalicious corpus · updated 2026-10-23 21:37 UTCBlock these indicators
- Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2019-1965?format=txt
- CSV export: https://api.ismalicious.com/edl/cve/CVE-2019-1965?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 |
|---|---|---|---|
| 9.2 | ≥ 7.0\(3\)f, < 9.2 | 9.2 | NVD |
| 9.2 | ≥ 9.2, < 9.2\(3\) | 9.2\(3\) | NVD |
| 8.4 | ≥ 7.3, < 8.4 | 8.4 | NVD |
| 8.x | ≥ 8.3, < 8.4 | 8.4 | NVD |
| 8.x | ≥ 8.0, < 8.2\(3\) | 8.2\(3\) | NVD |
| 7.3 | ≥ 7.3, < 7.3\(5\)n1\(1\) | 7.3\(5\)n1\(1\) | NVD |
| 7.x | ≥ 7.2, < 7.3\(4\)d1\(1\) | 7.3\(4\)d1\(1\) | NVD |
| 7.1 | < 7.1\(5\)n1\(1b\) | 7.1\(5\)n1\(1b\) | NVD |
| 7.0 | < 7.0\(3\)i4\(9\) | 7.0\(3\)i4\(9\) | NVD |
| 7.0 | ≥ 7.0\(3\)i7, < 7.0\(3\)i7\(4\) | 7.0\(3\)i7\(4\) | NVD |
| 7.0 | ≥ 7.0\(3\)i7, < 7.0\(3\)i7\(6\) | 7.0\(3\)i7\(6\) | NVD |
| 6.2 | ≥ 5.2, < 6.2\(29\) | 6.2\(29\) | 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 9.2 · 9.2\(3\) · 8.4 · 8.2\(3\) · 7.3\(5\)n1\(1\) · 7.3\(4\)d1\(1\) · 7.1\(5\)n1\(1b\) · 7.0\(3\)i4\(9\)
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:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
- Published
- 2019-08-28
- Last Modified
- 2026-06-17
- NVD status
- Modified
Frequently asked questions
What is CVE-2019-1965?
Is CVE-2019-1965 actively exploited?
What is the CVSS score for CVE-2019-1965?
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Related vulnerabilities
Same product first, then the same vendor advisory and the same publication week.