HIGH
Mikrotik RouterOS before 6.42.7 and 6.40.9 is vulnerable to stack buffer overflow through the license upgrade interface
Published Aug 23, 2018
8.8
HIGHCVSS 3.0
EPSS 7.43%
Description
Mikrotik RouterOS before 6.42.7 and 6.40.9 is vulnerable to stack buffer overflow through the license upgrade interface. This vulnerability could theoretically allow a remote authenticated attacker execute arbitrary code on the system.
Affected products
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
8.8 HIGH NVD
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality Impact High
Integrity Impact High
Availability Impact High
9.0 HIGH NVD
AV:N/AC:L/Au:S/C:C/I:C/A:C
Access Vector Network
Access Complexity Low
Authentication Single
Confidentiality Impact Complete
Integrity Impact Complete
Availability Impact Complete
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
7.43% 0.07431
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.07431
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 (30 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 7.43% (0.07431) | 94.26th | v5 (v2026.06.15) |
| Sep 22, 2026 | 7.43% (0.07431) | 94.17th | v5 (v2026.06.15) |
| Sep 21, 2026 | 6.20% (0.06202) | 93.28th | v5 (v2026.06.15) |
| Sep 6, 2026 | 7.43% (0.07431) | 94.04th | v5 (v2026.06.15) |
| Sep 5, 2026 | 6.20% (0.06202) | 93.13th | v5 (v2026.06.15) |
| Aug 30, 2026 | 7.43% (0.07431) | 94.00th | v5 (v2026.06.15) |
| Aug 28, 2026 | 6.20% (0.06202) | 93.08th | v5 (v2026.06.15) |
| Aug 24, 2026 | 7.43% (0.07431) | 93.97th | v5 (v2026.06.15) |
| Aug 23, 2026 | 6.20% (0.06202) | 93.06th | v5 (v2026.06.15) |
| Jun 15, 2026 | 7.37% (0.07371) | 93.60th | v5 (v2026.06.15) |
| Nov 21, 2025 | 2.83% (0.02831) | 85.69th | v4 (v2025.03.14) |
| Nov 18, 2025 | 4.49% (0.04485) | 88.00th | v4 (v2025.03.14) |
| Aug 17, 2025 | 3.21% (0.03207) | 86.52th | v4 (v2025.03.14) |
| Jul 1, 2025 | 4.25% (0.04249) | 88.36th | v4 (v2025.03.14) |
| Apr 6, 2025 | 5.49% (0.05488) | 89.29th | v4 (v2025.03.14) |
| Mar 30, 2025 | 6.98% (0.06975) | 90.56th | v4 (v2025.03.14) |
| Mar 29, 2025 | 8.09% (0.08088) | 86.65th | v4 (v2025.03.14) |
| Mar 20, 2025 | 6.98% (0.06975) | 90.67th | v4 (v2025.03.14) |
| Mar 17, 2025 | 5.76% (0.05763) | 89.79th | v4 (v2025.03.14) |
| Jul 20, 2024 | 2.21% (0.02207) | 89.59th | v3 (v2023.03.01) |
| Jul 1, 2024 | 2.21% (0.02207) | 89.53th | v3 (v2023.03.01) |
| Aug 17, 2023 | 2.15% (0.02149) | 87.85th | v3 (v2023.03.01) |
| Mar 7, 2023 | 2.24% (0.02237) | 87.76th | v3 (v2023.03.01) |
| Mar 6, 2023 | 4.57% (0.04571) | 88.92th | v2 (v2022.01.01) |
| Apr 1, 2022 | 4.57% (0.04571) | 87.83th | v2 (v2022.01.01) |
| Feb 4, 2022 | 4.57% (0.04571) | 74.15th | v2 (v2022.01.01) |
| Feb 3, 2022 | 1.83% (0.01828) | 35.38th | v1 |
| Jan 6, 2022 | 1.83% (0.01828) | 34.69th | v1 |
| Sep 1, 2021 | 1.83% (0.01828) | 74.99th | v1 |
| Apr 14, 2021 | 1.83% (0.01828) | 0.00th | v1 |
Weaknesses (1)
References (3)
- https://mikrotik.com/download/changelogs x_refsource_CONFIRMVendor Advisory
- https://mikrotik.com/download/changelogs/bugfix-release-tree x_refsource_CONFIRMVendor Advisory
- https://www.tenable.com/security/research/tra-2018-21 x_refsource_MISCExploitThird Party Advisory
| Link | Providers | Tags |
|---|---|---|
| https://mikrotik.com/download/changelogs | x_refsource_CONFIRMVendor Advisory | |
| https://mikrotik.com/download/changelogs/bugfix-release-tree | x_refsource_CONFIRMVendor Advisory | |
| https://www.tenable.com/security/research/tra-2018-21 | x_refsource_MISCExploitThird Party Advisory |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner tenable
Published Aug 23, 2018
Updated Sep 16, 2024
Reserved Dec 5, 2017
Link CVE-2018-1156
CISA Vulnrichment
Updated n/a