Cisco IOS and IOS XE Software SM-1T3/E3 Service Module Denial of Service Vulnerability
Published Oct 5, 2018
8.6
HIGHCVSS 3.0
EPSS 4.11%
Description
A vulnerability in the SM-1T3/E3 firmware on Cisco Second Generation Integrated Services Routers (ISR G2) and the Cisco 4451-X Integrated Services Router (ISR4451-X) could allow an unauthenticated, remote attacker to cause the ISR G2 Router or the SM-1T3/E3 module on the ISR4451-X to reload, resulting in a denial of service (DoS) condition on an affected device. The vulnerability is due to improper handling of user input. An attacker could exploit this vulnerability by first connecting to the SM-1T3/E3 module console and entering a string sequence. A successful exploit could allow the attacker to cause the ISR G2 Router or the SM-1T3/E3 module on the ISR4451-X to reload, resulting in a DoS condition on an affected device.
Affected products
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 IOS Software | 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.
No CVSS v3.1 score for this CVE.
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 25, 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 v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (24 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 4.11% (0.04109) | 90.46th | v5 (v2026.06.15) |
| Jun 15, 2026 | 4.11% (0.04109) | 89.43th | v5 (v2026.06.15) |
| Jan 2, 2026 | 3.81% (0.03805) | 87.81th | v4 (v2025.03.14) |
| Sep 5, 2025 | 5.12% (0.05117) | 89.45th | v4 (v2025.03.14) |
| May 16, 2025 | 6.16% (0.06163) | 90.31th | v4 (v2025.03.14) |
| Mar 17, 2025 | 7.20% (0.07196) | 90.94th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.25% (0.00251) | 65.57th | v3 (v2023.03.01) |
| Jul 11, 2024 | 0.25% (0.00251) | 65.39th | v3 (v2023.03.01) |
| May 15, 2024 | 0.49% (0.00492) | 76.09th | v3 (v2023.03.01) |
| Mar 28, 2024 | 0.65% (0.00654) | 79.03th | v3 (v2023.03.01) |
| Feb 17, 2024 | 0.92% (0.00925) | 82.46th | v3 (v2023.03.01) |
| Nov 3, 2023 | 0.99% (0.00987) | 81.86th | v3 (v2023.03.01) |
| Sep 29, 2023 | 0.97% (0.00971) | 81.59th | v3 (v2023.03.01) |
| Jul 8, 2023 | 0.99% (0.00990) | 81.45th | v3 (v2023.03.01) |
| May 21, 2023 | 0.89% (0.00892) | 80.31th | v3 (v2023.03.01) |
| Mar 7, 2023 | 1.16% (0.01155) | 82.62th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.21% (0.01213) | 66.61th | v2 (v2022.01.01) |
| Feb 17, 2023 | 1.21% (0.01213) | 66.22th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.21% (0.01213) | 64.21th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.21% (0.01213) | 40.54th | v2 (v2022.01.01) |
| Feb 3, 2022 | 1.62% (0.01623) | 33.90th | v1 |
| Jan 6, 2022 | 1.62% (0.01623) | 33.20th | v1 |
| Sep 1, 2021 | 1.62% (0.01623) | 73.32th | v1 |
| Apr 14, 2021 | 1.62% (0.01623) | 0.00th | v1 |
References (4)
- http://www.securityfocus.com/bid/105433 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1041736 vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1041737 vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180926-sm1t3e3 vendor-advisoryx_refsource_CISCOVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| http://www.securityfocus.com/bid/105433 | vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry | |
| http://www.securitytracker.com/id/1041736 | vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry | |
| http://www.securitytracker.com/id/1041737 | vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry | |
| https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180926-sm1t3e3 | vendor-advisoryx_refsource_CISCOVendor Advisory |
Change history (0)
No recorded changes yet.