CVE-2019-1806
No exploitation reported by the sources we read.
- Published2019-05-15
- Fixed in1.4.10.6
- WeaknessCWE-20 · 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 Simple Network Management Protocol (SNMP) input packet processor of Cisco Small Business Sx200, Sx300, Sx500, ESW2 Series Managed Switches and Small Business Sx250, Sx350, Sx550 Series Switches could allow an authenticated, remote attacker to cause the SNMP application of an affected device to cease processing traffic, resulting in the CPU utilization reaching one hundred percent. Manual intervention may be required before a device resumes normal operations. The vulnerability is due to improper validation of SNMP protocol data units (PDUs) in SNMP packets. An attacker could exploit this vulnerability by sending a malicious SNMP packet to an affected device. A successful exploit could allow the attacker to cause the device to cease forwarding traffic, which could result in a denial of service (DoS) condition. Cisco has released firmware updates that address this vulnerability.
Timeline
dates in UTC- 2019-05-1522:29CVE 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-2019-1806?format=txt
- CSV export: https://api.ismalicious.com/edl/cve/CVE-2019-1806?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 |
|---|---|---|---|
| 1.4 | < 1.4.10.6 | 1.4.10.6 | NVD |
| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 1.4 | < 1.4.10.6 | 1.4.10.6 | NVD |
| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 1.4 | < 1.4.10.6 | 1.4.10.6 | NVD |
102 more products in the sources.
as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.
Fix
- Update Cisco esw2-350g52dc firmware to 1.4.10.6
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
- 2019-05-15
- Last Modified
- 2026-06-17
- NVD status
- Modified
Frequently asked questions
What is CVE-2019-1806?
Is CVE-2019-1806 actively exploited?
What is the CVSS score for CVE-2019-1806?
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Related vulnerabilities
Same product first, then the same vendor advisory and the same publication week.