CVE-2019-1599
No exploitation reported by the sources we read.
- Published2019-03-07
- Fixed in9.2\(2\) · 8.3\(2\) · 8.2\(3\) · 7.3\(5\)n1\(1\) · 7.3\(3\)d1\(1\) · 7.1\(5\)n1\(1b\)
- WeaknessCWE-399 · CWE-770
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 network stack of Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on the affected device. The vulnerability is due to an issue with allocating and freeing memory buffers in the network stack. An attacker could exploit this vulnerability by sending crafted TCP streams to an affected device in a sustained way. A successful exploit could cause the network stack of an affected device to run out of available buffers, impairing operations of control plane and management plane protocols, resulting in a DoS condition. Note: This vulnerability can be triggered only by traffic that is destined to an affected device and cannot be exploited using traffic that transits an affected device. Nexus 1000V Switch for Microsoft Hyper-V is affected in versions prior to 5.2(1)SM3(2.1). Nexus 1000V Switch for VMware vSphere is affected in versions prior to 5.2(1)SV3(4.1a). Nexus 3000 Series Switches are affected in versions prior to 7.0(3)I7(6) and 9.2(2). Nexus 3500 Platform Switches are affected in versions prior to 6.0(2)A8(11), 7.0(3)I7(6), and 9.2(2). Nexus 3600 Platform Switches are affected in versions prior to 7.0(3)F3(5) and 9.2(2). Nexus 5500, 5600, and 6000 Series Switches are affected in versions prior to 7.1(5)N1(1b) and 7.3(5)N1(1). Nexus 7000 and 7700 Series Switches are affected in versions prior to 6.2(22. Nexus 9500 R-Series Line Cards and Fabric Modules are affected in versions prior to 7.0(3)F3(5) and 9.2(2). UCS 6200 and 6300 Series Fabric Interconnect are affected in versions prior to 3.2(3j) and 4.0(2a). UCS 6400 Series Fabric Interconnect are affected in versions prior to 4.0(2a).
Timeline
dates in UTC- 2019-03-0720:29CVE publishedNVD
- 2026-10-2319:23EPSS crossed 10 %FIRST EPSS
Observed activity
isMalicious corpus · updated 2026-10-23 18:48 UTCBlock these indicators
- Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2019-1599?format=txt
- CSV export: https://api.ismalicious.com/edl/cve/CVE-2019-1599?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 | ≥ 9.2, < 9.2\(2\) | 9.2\(2\) | NVD |
| 8.3 | ≥ 8.3, < 8.3\(2\) | 8.3\(2\) | NVD |
| 8.x | ≥ 8.0, < 8.2\(3\) | 8.2\(3\) | NVD |
| 7.x | ≥ 7.2, < 7.3\(5\)n1\(1\) | 7.3\(5\)n1\(1\) | NVD |
| 7.x | ≥ 7.2, < 7.3\(3\)d1\(1\) | 7.3\(3\)d1\(1\) | NVD |
| 7.1 | < 7.1\(5\)n1\(1b\) | 7.1\(5\)n1\(1b\) | NVD |
| 7.0 | ≥ 7.0\(3\), < 7.0\(3\)i7\(5\) | 7.0\(3\)i7\(5\) | NVD |
| 7.0 | ≥ 7.0\(3\), < 7.0\(3\)f3\(5\) | 7.0\(3\)f3\(5\) | NVD |
| 7.0 | ≥ 7.0\(3\)i5, < 7.0\(3\)i7\(6\) | 7.0\(3\)i7\(6\) | NVD |
| 7.0 | < 7.0\(3\)i4\(9\) | 7.0\(3\)i4\(9\) | NVD |
| 6.2 | < 6.2\(22\) | 6.2\(22\) | NVD |
| 6.0 | < 6.0\(2\)a8\(11\) | 6.0\(2\)a8\(11\) | 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\(2\) · 8.3\(2\) · 8.2\(3\) · 7.3\(5\)n1\(1\) · 7.3\(3\)d1\(1\) · 7.1\(5\)n1\(1b\) · 7.0\(3\)i7\(5\) · 7.0\(3\)f3\(5\)
Advisories and patches
- tools.cisco.comPatch · Vendor 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:N/UI:N/S:C/C:N/I:N/A:H
- Published
- 2019-03-07
- Last Modified
- 2026-06-17
- NVD status
- Modified
Frequently asked questions
What is CVE-2019-1599?
Is CVE-2019-1599 actively exploited?
What is the CVSS score for CVE-2019-1599?
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