Cisco Small Business Series Switches Simple Network Management Protocol Denial of Service Vulnerability
Published May 15, 2019
7.7
HIGHCVSS 3.1
EPSS 2.05%
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.
Affected products
-
- Version unspecifiedStatusaffectedConstraints<1.4.10.6
- Version unspecifiedStatusaffectedConstraints<2.5.0.78
- 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 | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cisco | Cisco 550X Series Stackable Managed Switches | n/a |
|
Configuration 1
- < 1.4.10.6
Configuration 2
- < 1.4.10.6
Configuration 3
- < 1.4.10.6
Configuration 4
- < 1.4.10.6
Configuration 5
- < 1.4.10.6
Configuration 6
- < 1.4.10.6
Configuration 7
- < 1.4.10.6
Configuration 8
- < 1.4.10.6
Configuration 9
- < 1.4.10.6
Configuration 10
- < 1.4.10.6
Configuration 11
- < 1.4.10.6
Running on/with
- n/a
Configuration 12
- < 1.4.10.6
Running on/with
- n/a
Configuration 13
- < 1.4.10.6
Running on/with
- n/a
Configuration 14
- < 1.4.10.6
Configuration 15
- < 1.4.10.6
Running on/with
- n/a
Configuration 16
- < 1.4.10.6
Configuration 17
- < 1.4.10.6
Configuration 18
- < 1.4.10.6
Configuration 19
- < 1.4.10.6
Running on/with
- n/a
Configuration 20
- < 1.4.10.6
Running on/with
- n/a
Configuration 21
- < 1.4.10.6
Running on/with
- n/a
Configuration 22
- < 1.4.10.6
Configuration 23
- < 1.4.10.6
Configuration 24
- < 1.4.10.6
Running on/with
- n/a
Configuration 25
- < 1.4.10.6
Configuration 26
- < 1.4.10.6
Configuration 27
- < 1.4.10.6
Running on/with
- n/a
Configuration 28
- < 1.4.10.6
Configuration 29
- < 1.4.10.6
Running on/with
- n/a
Configuration 30
- < 1.4.10.6
Running on/with
- n/a
Configuration 31
- < 1.4.10.6
Configuration 32
- < 1.4.10.6
Configuration 33
- < 1.4.10.6
Running on/with
- n/a
Configuration 34
- < 1.4.10.6
Running on/with
- n/a
Configuration 35
- < 1.4.10.6
Configuration 36
- < 1.4.10.6
Configuration 37
- < 1.4.10.6
Running on/with
- n/a
Configuration 38
- < 1.4.10.6
Configuration 39
- < 1.4.10.6
Configuration 40
- < 1.4.10.6
Running on/with
- n/a
Configuration 41
- < 1.4.10.6
Configuration 42
- < 1.4.10.6
Configuration 43
- < 1.4.10.6
Running on/with
- n/a
Configuration 44
- < 1.4.10.6
Configuration 45
- < 1.4.10.6
Configuration 46
- < 1.4.10.6
Running on/with
- n/a
Configuration 47
- < 1.4.10.6
Configuration 48
- < 1.4.10.6
Configuration 49
- < 1.4.10.6
Running on/with
- n/a
Configuration 50
- < 1.4.10.6
Configuration 51
- < 1.4.10.6
Running on/with
- n/a
Configuration 52
- < 1.4.10.6
Running on/with
- n/a
Configuration 53
- < 1.4.10.6
Configuration 54
- < 1.4.10.6
Running on/with
- n/a
Configuration 55
- < 1.4.10.6
Running on/with
- n/a
Configuration 56
- < 1.4.10.6
Running on/with
- n/a
Configuration 57
- < 1.4.10.6
Running on/with
- n/a
Configuration 58
- < 1.4.10.6
Running on/with
- n/a
Configuration 59
- < 2.5.0.78
Configuration 60
- < 2.5.0.78
Running on/with
- n/a
Configuration 61
- < 2.5.0.78
Configuration 62
- < 2.5.0.78
Running on/with
- n/a
Configuration 63
- < 2.5.0.78
Configuration 64
- < 2.5.0.78
Running on/with
- n/a
Configuration 65
- < 2.5.0.78
Configuration 66
- < 2.5.0.78
Configuration 67
- < 2.5.0.78
Configuration 68
- < 2.5.0.78
Running on/with
- n/a
Configuration 69
- < 2.5.0.78
Configuration 70
- < 2.5.0.78
Configuration 71
- < 2.5.0.78
Running on/with
- n/a
Configuration 72
- < 2.5.0.78
Configuration 73
- < 2.5.0.78
Configuration 74
- < 2.5.0.78
Configuration 75
- < 2.5.0.78
Configuration 76
- < 2.5.0.78
Running on/with
- n/a
Configuration 77
- < 2.5.0.78
Configuration 78
- < 2.5.0.78
Configuration 79
- < 2.5.0.78
Running on/with
- n/a
Configuration 80
- < 2.5.0.78
Configuration 81
- < 2.5.0.78
Configuration 82
- < 2.5.0.78
Configuration 83
- < 2.5.0.78
Running on/with
- n/a
Configuration 84
- < 2.5.0.78
Configuration 85
- < 2.5.0.78
Configuration 86
- < 2.5.0.78
Running on/with
- n/a
Configuration 87
- < 2.5.0.78
Running on/with
- n/a
Configuration 88
- < 2.5.0.78
Running on/with
- n/a
Configuration 89
- < 2.5.0.78
Running on/with
- n/a
Configuration 90
- < 2.5.0.78
Running on/with
- n/a
Configuration 91
- < 2.5.0.78
Configuration 92
- < 2.5.0.78
Configuration 93
- < 2.5.0.78
Configuration 94
- < 2.5.0.78
Running on/with
- n/a
Configuration 95
- < 2.5.0.78
Running on/with
- n/a
Configuration 96
- < 2.5.0.78
Running on/with
- n/a
Configuration 97
- < 2.5.0.78
Configuration 98
- < 2.5.0.78
Running on/with
- n/a
Configuration 99
- < 2.5.0.78
Running on/with
- n/a
Configuration 100
- < 2.5.0.78
Configuration 101
- < 2.5.0.78
Running on/with
- n/a
Configuration 102
- < 2.5.0.78
Running on/with
- n/a
Configuration 103
- < 2.5.0.78
Configuration 104
- < 2.5.0.78
Running on/with
- n/a
Configuration 105
- < 2.5.0.78
Running on/with
- 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.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
AV:N/AC:L/Au:S/C:N/I:N/A:C
This CVE is not in the KEV list.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
NoneAutomatable
NoTechnical Impact
PartialDecision
n/aAssessed Nov 21, 2024 · SSVC 2.0.3
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 v2
- EPSS v3
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v5
Table of values (13 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 2.05% (0.02046) | 80.49th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.08% (0.02084) | 79.05th | v5 (v2026.06.15) |
| Jul 20, 2024 | 0.11% (0.00114) | 45.44th | v3 (v2023.03.01) |
| Jul 10, 2024 | 0.11% (0.00114) | 45.40th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.11% (0.00114) | 43.33th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.05% (0.01055) | 52.13th | v2 (v2022.01.01) |
| Sep 17, 2022 | 1.05% (0.01055) | 50.47th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.05% (0.01055) | 48.43th | v2 (v2022.01.01) |
| Feb 4, 2022 | 4.50% (0.04499) | 74.08th | v2 (v2022.01.01) |
| Feb 3, 2022 | 4.24% (0.04237) | 74.61th | v1 |
| Jan 6, 2022 | 4.24% (0.04237) | 74.40th | v1 |
| Sep 1, 2021 | 0.98% (0.00976) | 61.78th | v1 |
| Apr 14, 2021 | 0.98% (0.00976) | 0.00th | v1 |
References (2)
- http://www.securityfocus.com/bid/108335 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190515-sb-snmpdos vendor-advisoryx_refsource_CISCOVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| http://www.securityfocus.com/bid/108335 | vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry | |
| https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190515-sb-snmpdos | vendor-advisoryx_refsource_CISCOVendor Advisory |
Change history (0)
No recorded changes yet.