A vulnerability in Cisco IOS XE Software could allow an unauthenticated, remote attacker to log in to a device running an affected release of Cisco IOS XE Software with the default username and password that are used at initial boot, aka a Static Credential Vulnerability
Published Mar 28, 2018
9.8
CRITICALCVSS 3.1
EPSS 4.79%
Description
A vulnerability in Cisco IOS XE Software could allow an unauthenticated, remote attacker to log in to a device running an affected release of Cisco IOS XE Software with the default username and password that are used at initial boot, aka a Static Credential Vulnerability. The vulnerability is due to an undocumented user account with privilege level 15 that has a default username and password. An attacker could exploit this vulnerability by using this account to remotely connect to an affected device. A successful exploit could allow the attacker to log in to the device with privilege level 15 access. This vulnerability affects Cisco devices that are running a vulnerable release of Cisco IOS XE Software Release 16.x. This vulnerability does not affect Cisco IOS XE Software releases prior to Release 16.x. Cisco Bug IDs: CSCve89880.
Affected products
- Vendor n/a Product Cisco IOS XE Defaultn/a
- Version Cisco IOS XEStatusaffectedConstraints-
- 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 | ||||||
|---|---|---|---|---|---|---|---|---|---|
| n/a | Cisco IOS XE | n/a |
|
Running on/with
- n/a
- 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:H/I:H/A:H
No CVSS v3.0 score for this CVE.
AV:N/AC:L/Au:N/C:C/I:C/A:C
This CVE is not in the KEV list.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
NoneAutomatable
YesTechnical Impact
TotalDecision
n/aAssessed Dec 2, 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 v4
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (32 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 4.79% (0.04791) | 91.66th | v5 (v2026.06.15) |
| Jun 15, 2026 | 4.34% (0.04340) | 89.92th | v5 (v2026.06.15) |
| Dec 31, 2025 | 2.91% (0.02911) | 85.96th | v4 (v2025.03.14) |
| Dec 28, 2025 | 8.89% (0.08891) | 92.28th | v4 (v2025.03.14) |
| Dec 27, 2025 | 11.61% (0.11606) | 93.45th | v4 (v2025.03.14) |
| Nov 21, 2025 | 8.89% (0.08891) | 92.22th | v4 (v2025.03.14) |
| Nov 18, 2025 | 7.23% (0.07232) | 90.72th | v4 (v2025.03.14) |
| Oct 28, 2025 | 8.89% (0.08891) | 92.18th | v4 (v2025.03.14) |
| Oct 27, 2025 | 11.61% (0.11606) | 93.36th | v4 (v2025.03.14) |
| Oct 17, 2025 | 8.89% (0.08891) | 92.15th | v4 (v2025.03.14) |
| Oct 15, 2025 | 11.51% (0.11505) | 93.27th | v4 (v2025.03.14) |
| Jun 25, 2025 | 7.58% (0.07585) | 91.37th | v4 (v2025.03.14) |
| Apr 15, 2025 | 8.87% (0.08872) | 92.01th | v4 (v2025.03.14) |
| Mar 30, 2025 | 10.03% (0.10026) | 92.33th | v4 (v2025.03.14) |
| Mar 29, 2025 | 13.55% (0.13554) | 90.36th | v4 (v2025.03.14) |
| Mar 22, 2025 | 10.03% (0.10026) | 92.43th | v4 (v2025.03.14) |
| Mar 17, 2025 | 12.95% (0.12950) | 93.51th | v4 (v2025.03.14) |
| Jul 20, 2024 | 0.37% (0.00366) | 72.70th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.37% (0.00366) | 71.66th | v3 (v2023.03.01) |
| Sep 28, 2023 | 0.37% (0.00366) | 69.19th | v3 (v2023.03.01) |
| Aug 19, 2023 | 0.40% (0.00402) | 70.32th | v3 (v2023.03.01) |
| Apr 26, 2023 | 0.54% (0.00544) | 73.99th | v3 (v2023.03.01) |
| Mar 22, 2023 | 0.55% (0.00552) | 74.06th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.46% (0.00464) | 71.57th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.14% (0.01136) | 59.45th | v2 (v2022.01.01) |
| Oct 18, 2022 | 1.14% (0.01136) | 58.28th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.14% (0.01136) | 56.27th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.14% (0.01136) | 34.23th | v2 (v2022.01.01) |
| Feb 3, 2022 | 1.05% (0.01046) | 28.66th | v1 |
| Jan 6, 2022 | 1.05% (0.01046) | 28.03th | v1 |
| Sep 1, 2021 | 1.05% (0.01046) | 65.02th | v1 |
| Apr 14, 2021 | 1.05% (0.01046) | 0.00th | v1 |
References (3)
- http://www.securityfocus.com/bid/103539 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1040579 vdb-entryx_refsource_SECTRACKMitigationThird Party AdvisoryVDB Entry
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180328-xesc x_refsource_CONFIRMMitigationVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| http://www.securityfocus.com/bid/103539 | vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry | |
| http://www.securitytracker.com/id/1040579 | vdb-entryx_refsource_SECTRACKMitigationThird Party AdvisoryVDB Entry | |
| https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180328-xesc | x_refsource_CONFIRMMitigationVendor Advisory |
Change history (0)
No recorded changes yet.