Cisco IOS XE Software HTTP Denial of Service Vulnerability
Published Oct 5, 2018
8.6
HIGHCVSS 3.0
EPSS 4.40%
Description
A vulnerability in the web framework of Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause a buffer overflow condition on an affected device, resulting in a denial of service (DoS) condition. The vulnerability is due to the affected software improperly parsing malformed HTTP packets that are destined to a device. An attacker could exploit this vulnerability by sending a malformed HTTP packet to an affected device for processing. A successful exploit could allow the attacker to cause a buffer overflow condition on the affected device, resulting in a DoS condition.
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 XE 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 3, 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 (28 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 3, 2026 | 4.40% (0.04402) | 91.03th | v5 (v2026.06.15) |
| Jun 15, 2026 | 4.40% (0.04402) | 90.03th | v5 (v2026.06.15) |
| Nov 21, 2025 | 1.41% (0.01406) | 79.88th | v4 (v2025.03.14) |
| Nov 18, 2025 | 2.68% (0.02677) | 84.52th | v4 (v2025.03.14) |
| Sep 16, 2025 | 1.41% (0.01406) | 79.78th | v4 (v2025.03.14) |
| Sep 5, 2025 | 3.06% (0.03061) | 86.20th | v4 (v2025.03.14) |
| Mar 30, 2025 | 4.73% (0.04728) | 88.38th | v4 (v2025.03.14) |
| Mar 29, 2025 | 7.22% (0.07219) | 85.71th | v4 (v2025.03.14) |
| Mar 17, 2025 | 4.73% (0.04728) | 88.67th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.23% (0.00228) | 61.89th | v3 (v2023.03.01) |
| Jul 11, 2024 | 0.23% (0.00228) | 61.35th | v3 (v2023.03.01) |
| May 15, 2024 | 0.32% (0.00320) | 70.41th | v3 (v2023.03.01) |
| Mar 28, 2024 | 0.43% (0.00426) | 73.91th | v3 (v2023.03.01) |
| Feb 17, 2024 | 0.51% (0.00514) | 76.03th | v3 (v2023.03.01) |
| Nov 3, 2023 | 0.55% (0.00549) | 74.96th | v3 (v2023.03.01) |
| Sep 29, 2023 | 0.77% (0.00765) | 79.06th | v3 (v2023.03.01) |
| Aug 11, 2023 | 1.10% (0.01104) | 82.63th | v3 (v2023.03.01) |
| Jul 8, 2023 | 1.14% (0.01135) | 82.75th | v3 (v2023.03.01) |
| May 21, 2023 | 1.42% (0.01420) | 84.53th | v3 (v2023.03.01) |
| Mar 7, 2023 | 1.83% (0.01833) | 86.36th | 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 | 1.72% (0.01723) | 34.71th | v1 |
| Jan 6, 2022 | 1.72% (0.01723) | 34.02th | v1 |
| Sep 1, 2021 | 1.72% (0.01723) | 74.12th | v1 |
| Apr 14, 2021 | 1.72% (0.01723) | 0.00th | v1 |
References (4)
- http://www.securityfocus.com/bid/105397 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1041737 vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry
- https://ics-cert.us-cert.gov/advisories/ICSA-19-094-03 x_refsource_MISC
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180926-webdos vendor-advisoryx_refsource_CISCOVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| http://www.securityfocus.com/bid/105397 | vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry | |
| http://www.securitytracker.com/id/1041737 | vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry | |
| https://ics-cert.us-cert.gov/advisories/ICSA-19-094-03 | x_refsource_MISC | |
| https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180926-webdos | vendor-advisoryx_refsource_CISCOVendor Advisory |
Change history (0)
No recorded changes yet.