CRITICAL
Authentication bypass vulnerability in the core config manager in Nagios XI 5.2.x through 5.4.x before 5.4.13 allows an unauthenticated attacker to make configuration changes and leverage an authenticated SQL injection vulnerability
Published Apr 18, 2018
9.8
CRITICALCVSS 3.0
EPSS 26.56%
Description
Authentication bypass vulnerability in the core config manager in Nagios XI 5.2.x through 5.4.x before 5.4.13 allows an unauthenticated attacker to make configuration changes and leverage an authenticated SQL injection vulnerability.
Affected products
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
9.8 CRITICAL NVD
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Impact High
Integrity Impact High
Availability Impact High
7.5 HIGH NVD
AV:N/AC:L/Au:N/C:P/I:P/A:P
Access Vector Network
Access Complexity Low
Authentication None
Confidentiality Impact Partial
Integrity Impact Partial
Availability Impact Partial
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
26.56% 0.26556
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.26556
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 (40 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 26.56% (0.26556) | 97.96th | v5 (v2026.06.15) |
| Sep 22, 2026 | 27.01% (0.27011) | 97.95th | v5 (v2026.06.15) |
| Sep 21, 2026 | 23.51% (0.23507) | 97.74th | v5 (v2026.06.15) |
| Sep 6, 2026 | 27.01% (0.27011) | 97.91th | v5 (v2026.06.15) |
| Sep 5, 2026 | 23.51% (0.23507) | 97.69th | v5 (v2026.06.15) |
| Aug 30, 2026 | 27.01% (0.27011) | 97.89th | v5 (v2026.06.15) |
| Aug 28, 2026 | 23.51% (0.23507) | 97.68th | v5 (v2026.06.15) |
| Aug 24, 2026 | 27.51% (0.27508) | 97.91th | v5 (v2026.06.15) |
| Aug 23, 2026 | 23.95% (0.23950) | 97.71th | v5 (v2026.06.15) |
| Jun 16, 2026 | 28.47% (0.28468) | 97.88th | v5 (v2026.06.15) |
| Jun 15, 2026 | 31.15% (0.31146) | 98.04th | v5 (v2026.06.15) |
| Nov 21, 2025 | 77.10% (0.77102) | 98.91th | v4 (v2025.03.14) |
| Nov 18, 2025 | 66.95% (0.66950) | 98.56th | v4 (v2025.03.14) |
| Oct 8, 2025 | 77.70% (0.77705) | 98.95th | v4 (v2025.03.14) |
| Mar 30, 2025 | 79.72% (0.79722) | 99.04th | v4 (v2025.03.14) |
| Mar 29, 2025 | 81.44% (0.81437) | 98.95th | v4 (v2025.03.14) |
| Mar 28, 2025 | 79.72% (0.79722) | 99.04th | v4 (v2025.03.14) |
| Mar 27, 2025 | 81.44% (0.81437) | 99.09th | v4 (v2025.03.14) |
| Mar 20, 2025 | 79.72% (0.79722) | 99.08th | v4 (v2025.03.14) |
| Mar 19, 2025 | 81.44% (0.81437) | 99.13th | v4 (v2025.03.14) |
| Mar 17, 2025 | 80.11% (0.80107) | 99.06th | v4 (v2025.03.14) |
| Dec 29, 2024 | 11.63% (0.11629) | 95.25th | v3 (v2023.03.01) |
| Dec 17, 2024 | 9.14% (0.09138) | 94.65th | v3 (v2023.03.01) |
| Jul 22, 2024 | 31.95% (0.31952) | 97.05th | v3 (v2023.03.01) |
| Feb 26, 2024 | 38.75% (0.38746) | 97.11th | v3 (v2023.03.01) |
| Nov 11, 2023 | 42.74% (0.42737) | 96.96th | v3 (v2023.03.01) |
| Sep 29, 2023 | 65.03% (0.65026) | 97.48th | v3 (v2023.03.01) |
| Sep 8, 2023 | 72.08% (0.72079) | 97.65th | v3 (v2023.03.01) |
| Aug 17, 2023 | 77.25% (0.77254) | 97.79th | v3 (v2023.03.01) |
| Jun 22, 2023 | 84.90% (0.84897) | 98.02th | v3 (v2023.03.01) |
| May 16, 2023 | 87.60% (0.87603) | 98.11th | v3 (v2023.03.01) |
| Apr 11, 2023 | 89.74% (0.89738) | 98.19th | v3 (v2023.03.01) |
| Mar 9, 2023 | 88.38% (0.88382) | 98.05th | v3 (v2023.03.01) |
| Mar 7, 2023 | 89.41% (0.89405) | 98.11th | v3 (v2023.03.01) |
| Mar 6, 2023 | 12.30% (0.12300) | 95.31th | v2 (v2022.01.01) |
| Apr 1, 2022 | 12.30% (0.12300) | 94.94th | v2 (v2022.01.01) |
| Feb 4, 2022 | 12.30% (0.12300) | 89.42th | v2 (v2022.01.01) |
| Feb 3, 2022 | 32.84% (0.32843) | 97.62th | v1 |
| Sep 1, 2021 | 32.84% (0.32843) | 98.73th | v1 |
| Apr 14, 2021 | 32.84% (0.32843) | 0.00th | v1 |
Weaknesses (1)
References (6)
- https://assets.nagios.com/downloads/nagiosxi/CHANGES-5.TXT x_refsource_MISCRelease NotesVendor Advisory
- https://blog.redactedsec.net/exploits/2018/04/26/nagios.html x_refsource_MISCExploitTechnical DescriptionThird Party Advisory
- https://gist.github.com/caleBot/f0a93b5a98574393e0139104eacc2d0f x_refsource_MISCThird Party Advisory
- https://www.exploit-db.com/exploits/44560/ exploitx_refsource_EXPLOIT-DBThird Party AdvisoryVDB Entry
- https://www.exploit-db.com/exploits/44969/ exploitx_refsource_EXPLOIT-DBThird Party AdvisoryVDB Entry
- https://www.nagios.com/downloads/nagios-xi/change-log/ x_refsource_MISCRelease NotesVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| https://assets.nagios.com/downloads/nagiosxi/CHANGES-5.TXT | x_refsource_MISCRelease NotesVendor Advisory | |
| https://blog.redactedsec.net/exploits/2018/04/26/nagios.html | x_refsource_MISCExploitTechnical DescriptionThird Party Advisory | |
| https://gist.github.com/caleBot/f0a93b5a98574393e0139104eacc2d0f | x_refsource_MISCThird Party Advisory | |
| https://www.exploit-db.com/exploits/44560/ | exploitx_refsource_EXPLOIT-DBThird Party AdvisoryVDB Entry | |
| https://www.exploit-db.com/exploits/44969/ | exploitx_refsource_EXPLOIT-DBThird Party AdvisoryVDB Entry | |
| https://www.nagios.com/downloads/nagios-xi/change-log/ | x_refsource_MISCRelease NotesVendor Advisory |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Apr 18, 2018
Updated Aug 5, 2024
Reserved Mar 15, 2018
Link CVE-2018-8733
CISA Vulnrichment
Updated n/a