A vulnerability in the implementation of Internet Key Exchange Version 1 (IKEv1) functionality in Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause an affected device to reload, resulting in a denial of service (DoS) condition
Published Mar 28, 2018 ·Due Mar 17, 2022
7.5
HIGHCVSS 3.1
EPSS 6.87%
Description
A vulnerability in the implementation of Internet Key Exchange Version 1 (IKEv1) functionality in Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause an affected device to reload, resulting in a denial of service (DoS) condition. The vulnerability is due to improper validation of specific IKEv1 packets. An attacker could exploit this vulnerability by sending crafted IKEv1 packets to an affected device during an IKE negotiation. A successful exploit could allow the attacker to cause an affected device to reload, resulting in a DoS condition. Cisco Bug IDs: CSCuj73916.
Affected products
- Vendor n/a Product Cisco IOS and IOS XE Defaultn/a
- Version Cisco IOS and 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 and IOS XE | n/a |
|
Configuration 1
Running on/with
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Configuration 2
Running on/with
- n/a
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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
No CVSS v3.0 score for this CVE.
AV:N/AC:L/Au:N/C:N/I:N/A:C
Date Added
Mar 3, 2022
Patch Due
Mar 17, 2022
Required Action
Apply updates per vendor instructions.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
ActiveAutomatable
YesTechnical Impact
PartialDecision
n/aAssessed Nov 8, 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 (26 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 6.87% (0.06870) | 93.85th | v5 (v2026.06.15) |
| Jun 15, 2026 | 6.87% (0.06874) | 93.20th | v5 (v2026.06.15) |
| Mar 7, 2026 | 6.97% (0.06968) | 91.29th | v4 (v2025.03.14) |
| Jan 29, 2026 | 5.25% (0.05255) | 89.71th | v4 (v2025.03.14) |
| Nov 21, 2025 | 6.47% (0.06471) | 90.67th | v4 (v2025.03.14) |
| Nov 18, 2025 | 2.35% (0.02349) | 83.56th | v4 (v2025.03.14) |
| Oct 22, 2025 | 7.30% (0.07303) | 91.21th | v4 (v2025.03.14) |
| Mar 30, 2025 | 6.18% (0.06176) | 89.89th | v4 (v2025.03.14) |
| Mar 29, 2025 | 19.51% (0.19513) | 92.48th | v4 (v2025.03.14) |
| Mar 17, 2025 | 6.18% (0.06176) | 90.14th | v4 (v2025.03.14) |
| Dec 17, 2024 | 2.74% (0.02744) | 90.27th | v3 (v2023.03.01) |
| Jul 17, 2024 | 0.41% (0.00414) | 74.25th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.30% (0.00303) | 68.84th | v3 (v2023.03.01) |
| Sep 28, 2023 | 0.30% (0.00303) | 66.07th | v3 (v2023.03.01) |
| Aug 19, 2023 | 0.43% (0.00430) | 71.26th | v3 (v2023.03.01) |
| Apr 26, 2023 | 0.64% (0.00636) | 76.01th | v3 (v2023.03.01) |
| Mar 22, 2023 | 0.63% (0.00631) | 75.81th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.55% (0.00550) | 73.99th | 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 | 1.30% (0.01300) | 31.12th | v1 |
| Jan 6, 2022 | 1.30% (0.01300) | 30.48th | v1 |
| Sep 1, 2021 | 1.30% (0.01300) | 69.44th | v1 |
| Apr 14, 2021 | 1.30% (0.01300) | 0.00th | v1 |
References (4)
- http://www.securityfocus.com/bid/103562 vdb-entryx_refsource_BIDBroken LinkThird Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1040595 vdb-entryx_refsource_SECTRACKBroken LinkThird Party AdvisoryVDB Entry
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180328-ike-dos x_refsource_CONFIRMVendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-0159 government-resourceUS Government Resource
| Link | Providers | Tags |
|---|---|---|
| http://www.securityfocus.com/bid/103562 | vdb-entryx_refsource_BIDBroken LinkThird Party AdvisoryVDB Entry | |
| http://www.securitytracker.com/id/1040595 | vdb-entryx_refsource_SECTRACKBroken LinkThird Party AdvisoryVDB Entry | |
| https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180328-ike-dos | x_refsource_CONFIRMVendor Advisory | |
| https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-0159 | government-resourceUS Government Resource |
Change history (0)
No recorded changes yet.