Cisco IOS XE Software and Cisco ASA 5500-X Series Adaptive Security Appliance IPsec Denial of Service Vulnerability
Published Oct 5, 2018
8.6
HIGHCVSS 3.0
EPSS 16.22%
Description
A vulnerability in the IPsec driver code of multiple Cisco IOS XE Software platforms and the Cisco ASA 5500-X Series Adaptive Security Appliance (ASA) could allow an unauthenticated, remote attacker to cause the device to reload. The vulnerability is due to improper processing of malformed IPsec Authentication Header (AH) or Encapsulating Security Payload (ESP) packets. An attacker could exploit this vulnerability by sending malformed IPsec packets to be processed by an affected device. An exploit could allow the attacker to cause a reload of the 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 Adaptive Security Appliance (ASA) 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 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 (35 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 16.22% (0.16221) | 96.85th | v5 (v2026.06.15) |
| Sep 22, 2026 | 16.22% (0.16221) | 96.80th | v5 (v2026.06.15) |
| Sep 21, 2026 | 13.67% (0.13669) | 96.37th | v5 (v2026.06.15) |
| Sep 6, 2026 | 16.22% (0.16221) | 96.73th | v5 (v2026.06.15) |
| Sep 5, 2026 | 13.67% (0.13669) | 96.29th | v5 (v2026.06.15) |
| Aug 30, 2026 | 16.22% (0.16221) | 96.71th | v5 (v2026.06.15) |
| Aug 28, 2026 | 13.67% (0.13669) | 96.27th | v5 (v2026.06.15) |
| Aug 24, 2026 | 16.22% (0.16221) | 96.69th | v5 (v2026.06.15) |
| Aug 23, 2026 | 13.67% (0.13669) | 96.26th | v5 (v2026.06.15) |
| Jun 15, 2026 | 16.22% (0.16221) | 96.53th | v5 (v2026.06.15) |
| Dec 28, 2025 | 14.92% (0.14922) | 94.32th | v4 (v2025.03.14) |
| Dec 27, 2025 | 12.90% (0.12898) | 93.86th | v4 (v2025.03.14) |
| Oct 28, 2025 | 14.92% (0.14922) | 94.23th | v4 (v2025.03.14) |
| Oct 27, 2025 | 12.90% (0.12898) | 93.78th | v4 (v2025.03.14) |
| Oct 1, 2025 | 14.92% (0.14922) | 94.34th | v4 (v2025.03.14) |
| Jul 30, 2025 | 13.32% (0.13323) | 93.88th | v4 (v2025.03.14) |
| Mar 17, 2025 | 15.64% (0.15642) | 94.19th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.49% (0.00494) | 76.98th | v3 (v2023.03.01) |
| Jul 11, 2024 | 0.49% (0.00494) | 76.40th | v3 (v2023.03.01) |
| May 15, 2024 | 0.70% (0.00700) | 80.19th | v3 (v2023.03.01) |
| Mar 28, 2024 | 1.29% (0.01290) | 85.52th | v3 (v2023.03.01) |
| Feb 17, 2024 | 1.82% (0.01818) | 87.80th | v3 (v2023.03.01) |
| Nov 3, 2023 | 2.19% (0.02191) | 88.21th | v3 (v2023.03.01) |
| Sep 29, 2023 | 2.17% (0.02174) | 88.05th | v3 (v2023.03.01) |
| Jul 8, 2023 | 2.21% (0.02215) | 87.93th | v3 (v2023.03.01) |
| May 21, 2023 | 1.44% (0.01444) | 84.63th | v3 (v2023.03.01) |
| Mar 7, 2023 | 1.86% (0.01865) | 86.51th | 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 | 1.57% (0.01565) | 33.71th | v1 |
| Jan 6, 2022 | 1.57% (0.01565) | 33.02th | v1 |
| Sep 1, 2021 | 1.57% (0.01565) | 73.12th | v1 |
| Apr 14, 2021 | 1.57% (0.01565) | 0.00th | v1 |
References (5)
- http://www.securityfocus.com/bid/105418 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1041735 vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1041737 vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry
- https://ics-cert.us-cert.gov/advisories/ICSA-19-094-04 x_refsource_MISC
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180926-ipsec vendor-advisoryx_refsource_CISCOVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| http://www.securityfocus.com/bid/105418 | vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry | |
| http://www.securitytracker.com/id/1041735 | vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry | |
| http://www.securitytracker.com/id/1041737 | vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry | |
| https://ics-cert.us-cert.gov/advisories/ICSA-19-094-04 | x_refsource_MISC | |
| https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180926-ipsec | vendor-advisoryx_refsource_CISCOVendor Advisory |
Change history (0)
No recorded changes yet.