Cisco FXOS and NX-OS Software Authenticated Simple Network Management Protocol Denial of Service Vulnerability
Published Aug 28, 2019
7.7
HIGHCVSS 3.0
EPSS 1.65%
Description
A vulnerability in the Simple Network Management Protocol (SNMP) input packet processor of Cisco FXOS Software and Cisco NX-OS Software could allow an authenticated, remote attacker to cause the SNMP application on an affected device to restart unexpectedly. The vulnerability is due to improper validation of Abstract Syntax Notation One (ASN.1)-encoded variables in SNMP packets. An attacker could exploit this vulnerability by sending a crafted SNMP packet to the SNMP daemon on the affected device. A successful exploit could allow the attacker to cause the SNMP application to restart multiple times, leading to a system-level restart and a denial of service (DoS) condition.
Affected products
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- Version unspecifiedStatusaffectedConstraints<8.4(1)
- 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 Unified Computing System (Managed) | n/a |
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Configuration 1
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Configuration 2
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Configuration 3
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Configuration 4
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Configuration 5
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Configuration 6
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Configuration 7
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Configuration 8
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Configuration 9
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Configuration 10
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Configuration 11
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Configuration 12
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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:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
1 other source (CVE.org) ▾
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 v5
- EPSS v2
- EPSS v3
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Table of values (12 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.65% (0.01647) | 75.61th | v5 (v2026.06.15) |
| Sep 20, 2026 | 1.65% (0.01647) | 75.42th | v5 (v2026.06.15) |
| Jul 20, 2024 | 0.10% (0.00101) | 42.02th | v3 (v2023.03.01) |
| Jul 10, 2024 | 0.10% (0.00101) | 41.98th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.10% (0.00101) | 39.92th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.05% (0.01055) | 52.13th | 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 | 2.86% (0.02857) | 63.60th | v1 |
| Jan 6, 2022 | 2.86% (0.02857) | 63.25th | v1 |
| Jan 5, 2022 | 0.65% (0.00651) | 47.22th | v5 (v2026.06.15) |
| Apr 14, 2021 | 0.65% (0.00651) | 0.00th | v1 |
References (1)
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190828-fxnxos-snmp-dos vendor-advisoryx_refsource_CISCOVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190828-fxnxos-snmp-dos | vendor-advisoryx_refsource_CISCOVendor Advisory |
Change history (0)
No recorded changes yet.