Cisco Small Business Switches Denial of Service Vulnerability
Published Jan 29, 2020
7.5
HIGHCVSS 3.1
EPSS 2.28%
Description
A vulnerability in the web UI of Cisco Small Business Switches could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to improper validation of requests sent to the web interface. An attacker could exploit this vulnerability by sending a malicious request to the web interface of an affected device. A successful exploit could allow the attacker to cause an unexpected reload of the device, resulting in a DoS condition. This vulnerability affects firmware releases prior than 1.3.7.18
Affected products
-
- Version unspecifiedStatusaffectedConstraints<1.3.7.18
- 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 Small Business 300 Series Managed Switches | n/a |
|
Configuration 1
- < 1.3.7.18
Configuration 2
- < 1.3.7.18
Configuration 3
- < 1.3.7.18
Running on/with
- n/a
Configuration 4
- < 1.3.7.18
Configuration 5
- < 1.3.7.18
Configuration 6
- < 1.3.7.18
Running on/with
- n/a
Configuration 7
- < 1.3.7.18
Configuration 8
- < 1.3.7.18
Running on/with
- n/a
Configuration 9
- < 1.3.7.18
Configuration 10
- < 1.3.7.18
Configuration 11
- < 1.3.7.18
Configuration 12
- < 1.3.7.18
Configuration 13
- < 1.3.7.18
Running on/with
- n/a
Configuration 14
- < 1.3.7.18
Configuration 15
- < 1.3.7.18
Configuration 16
- < 1.3.7.18
Running on/with
- n/a
Configuration 17
- < 1.3.7.18
Running on/with
- n/a
Configuration 18
- < 1.3.7.18
Running on/with
- n/a
Configuration 19
- < 1.3.7.18
Running on/with
- n/a
Configuration 20
- < 1.3.7.18
Running on/with
- n/a
Configuration 21
- < 1.3.7.18
Running on/with
- n/a
Configuration 22
- < 1.3.7.18
Running on/with
- n/a
Configuration 23
- < 1.3.7.18
Configuration 24
- < 1.3.7.18
Configuration 25
- < 1.3.7.18
Running on/with
- n/a
Configuration 26
- < 1.3.7.18
Configuration 27
- < 1.3.7.18
Configuration 28
- < 1.3.7.18
Configuration 29
- < 1.3.7.18
Configuration 30
- < 1.3.7.18
Running on/with
- n/a
Configuration 31
- < 1.3.7.18
Configuration 32
- < 1.3.7.18
Configuration 33
- < 1.3.7.18
Configuration 34
- < 1.3.7.18
Configuration 35
- < 1.3.7.18
Configuration 36
- < 1.3.7.18
Configuration 37
- < 1.3.7.18
Configuration 38
- < 1.3.7.18
Running on/with
- n/a
Configuration 39
- < 1.3.7.18
Running on/with
- n/a
Configuration 40
- < 1.3.7.18
Running on/with
- n/a
Configuration 41
- < 1.3.7.18
Configuration 42
- < 1.3.7.18
Running on/with
- n/a
Configuration 43
- < 1.3.7.18
Running on/with
- n/a
Configuration 44
- < 1.3.7.18
Running on/with
- n/a
Configuration 45
- < 1.3.7.18
Running on/with
- n/a
Configuration 46
- < 1.3.7.18
Configuration 47
- < 1.3.7.18
Configuration 48
- < 1.3.7.18
Configuration 49
- < 1.3.7.18
Configuration 50
- < 1.3.7.18
Configuration 51
- < 1.3.7.18
Configuration 52
- < 1.3.7.18
Configuration 53
- < 1.3.7.18
Configuration 54
- < 1.3.7.18
Configuration 55
- < 1.3.7.18
Running on/with
- n/a
Configuration 56
- < 1.3.7.18
Configuration 57
- < 1.3.7.18
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:N/UI:N/S:U/C:N/I:N/A:H
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
AV:N/AC:L/Au:N/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
YesTechnical Impact
PartialDecision
n/aAssessed Nov 15, 2024 · SSVC 2.0.3
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 2, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Table of values (39 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 2.28% (0.02280) | 82.54th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.28% (0.02280) | 80.81th | v5 (v2026.06.15) |
| Mar 4, 2026 | 2.56% (0.02561) | 85.26th | v4 (v2025.03.14) |
| Mar 1, 2026 | 1.51% (0.01514) | 81.02th | v4 (v2025.03.14) |
| Feb 4, 2026 | 2.56% (0.02561) | 85.16th | v4 (v2025.03.14) |
| Feb 1, 2026 | 1.51% (0.01514) | 80.94th | v4 (v2025.03.14) |
| Jan 4, 2026 | 2.56% (0.02561) | 85.10th | v4 (v2025.03.14) |
| Jan 1, 2026 | 1.51% (0.01514) | 80.88th | v4 (v2025.03.14) |
| Dec 8, 2025 | 2.73% (0.02730) | 85.45th | v4 (v2025.03.14) |
| Dec 4, 2025 | 4.10% (0.04098) | 88.16th | v4 (v2025.03.14) |
| Dec 1, 2025 | 2.65% (0.02653) | 85.34th | v4 (v2025.03.14) |
| Nov 21, 2025 | 4.10% (0.04098) | 88.10th | v4 (v2025.03.14) |
| Nov 18, 2025 | 1.09% (0.01086) | 76.03th | v4 (v2025.03.14) |
| Nov 4, 2025 | 4.10% (0.04098) | 88.08th | v4 (v2025.03.14) |
| Nov 1, 2025 | 2.65% (0.02653) | 85.29th | v4 (v2025.03.14) |
| Oct 4, 2025 | 4.10% (0.04098) | 88.11th | v4 (v2025.03.14) |
| Oct 1, 2025 | 2.65% (0.02653) | 85.28th | v4 (v2025.03.14) |
| Sep 4, 2025 | 4.10% (0.04098) | 88.15th | v4 (v2025.03.14) |
| Sep 1, 2025 | 2.65% (0.02653) | 85.28th | v4 (v2025.03.14) |
| Aug 4, 2025 | 4.10% (0.04098) | 88.16th | v4 (v2025.03.14) |
| Aug 1, 2025 | 2.65% (0.02653) | 85.28th | v4 (v2025.03.14) |
| Jul 4, 2025 | 4.10% (0.04098) | 88.10th | v4 (v2025.03.14) |
| Jul 1, 2025 | 2.65% (0.02653) | 85.19th | v4 (v2025.03.14) |
| Jun 4, 2025 | 4.10% (0.04098) | 88.02th | v4 (v2025.03.14) |
| Jun 1, 2025 | 2.65% (0.02653) | 85.09th | v4 (v2025.03.14) |
| May 5, 2025 | 4.10% (0.04098) | 87.93th | v4 (v2025.03.14) |
| May 4, 2025 | 2.73% (0.02730) | 85.15th | v4 (v2025.03.14) |
| May 1, 2025 | 1.52% (0.01523) | 80.30th | v4 (v2025.03.14) |
| Mar 19, 2025 | 2.73% (0.02730) | 84.36th | v4 (v2025.03.14) |
| Jul 20, 2024 | 0.16% (0.00159) | 52.88th | v3 (v2023.03.01) |
| Jun 26, 2024 | 0.16% (0.00159) | 52.68th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.16% (0.00159) | 50.67th | 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 | 5.46% (0.05463) | 76.57th | v2 (v2022.01.01) |
| Feb 3, 2022 | 3.03% (0.03031) | 65.08th | v5 (v2026.06.15) |
| Jan 6, 2022 | 3.03% (0.03031) | 64.74th | v1 |
| Sep 1, 2021 | 0.69% (0.00692) | 47.67th | v1 |
| Apr 14, 2021 | 0.69% (0.00692) | 0.00th | v1 |
References (1)
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-smlbus-switch-dos-R6VquS2u vendor-advisoryx_refsource_CISCOVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-smlbus-switch-dos-R6VquS2u | vendor-advisoryx_refsource_CISCOVendor Advisory |
Change history (0)
No recorded changes yet.