A vulnerability in MikroTik Version 6.41.4 could allow an unauthenticated remote attacker to exhaust all available CPU and all available RAM by sending a crafted FTP request on port 21 that begins with many '\0' characters, preventing the affected router from accepting new FTP connections
Published Apr 16, 2018
7.5
HIGHCVSS 3.0
EPSS 12.50%
Description
A vulnerability in MikroTik Version 6.41.4 could allow an unauthenticated remote attacker to exhaust all available CPU and all available RAM by sending a crafted FTP request on port 21 that begins with many '\0' characters, preventing the affected router from accepting new FTP connections. The router will reboot after 10 minutes, logging a "router was rebooted without proper shutdown" message.
Affected products
No data.
- 6.41.4
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:U/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.
No CISA SSVC assessment for this CVE yet.
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 (30 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 12.50% (0.12503) | 96.10th | v5 (v2026.06.15) |
| Sep 22, 2026 | 12.73% (0.12734) | 96.09th | v5 (v2026.06.15) |
| Sep 21, 2026 | 9.67% (0.09666) | 95.34th | v5 (v2026.06.15) |
| Sep 6, 2026 | 12.73% (0.12734) | 96.00th | v5 (v2026.06.15) |
| Sep 5, 2026 | 9.67% (0.09666) | 95.24th | v5 (v2026.06.15) |
| Aug 30, 2026 | 12.73% (0.12734) | 95.98th | v5 (v2026.06.15) |
| Aug 28, 2026 | 9.67% (0.09666) | 95.21th | v5 (v2026.06.15) |
| Aug 24, 2026 | 12.73% (0.12734) | 95.95th | v5 (v2026.06.15) |
| Aug 23, 2026 | 9.67% (0.09666) | 95.19th | v5 (v2026.06.15) |
| Jun 15, 2026 | 13.15% (0.13148) | 95.86th | v5 (v2026.06.15) |
| Nov 21, 2025 | 17.84% (0.17841) | 94.86th | v4 (v2025.03.14) |
| Nov 18, 2025 | 22.43% (0.22428) | 95.45th | v4 (v2025.03.14) |
| Mar 30, 2025 | 17.84% (0.17841) | 94.61th | v4 (v2025.03.14) |
| Mar 29, 2025 | 20.88% (0.20876) | 92.86th | v4 (v2025.03.14) |
| Mar 17, 2025 | 17.84% (0.17841) | 94.63th | v4 (v2025.03.14) |
| Dec 17, 2024 | 0.39% (0.00386) | 72.84th | v3 (v2023.03.01) |
| Dec 12, 2024 | 1.56% (0.01557) | 87.71th | v3 (v2023.03.01) |
| Sep 7, 2023 | 1.56% (0.01557) | 85.63th | v3 (v2023.03.01) |
| Jul 8, 2023 | 2.28% (0.02283) | 88.11th | v3 (v2023.03.01) |
| May 15, 2023 | 2.60% (0.02602) | 88.72th | v3 (v2023.03.01) |
| Mar 26, 2023 | 3.15% (0.03151) | 89.58th | v3 (v2023.03.01) |
| Mar 8, 2023 | 3.62% (0.03624) | 90.25th | v3 (v2023.03.01) |
| Mar 7, 2023 | 4.01% (0.04012) | 90.70th | v3 (v2023.03.01) |
| Mar 6, 2023 | 8.38% (0.08382) | 93.89th | v2 (v2022.01.01) |
| Apr 1, 2022 | 8.38% (0.08382) | 93.35th | v2 (v2022.01.01) |
| Feb 4, 2022 | 8.38% (0.08382) | 82.62th | v2 (v2022.01.01) |
| Feb 3, 2022 | 3.43% (0.03427) | 68.31th | v1 |
| Jan 6, 2022 | 3.43% (0.03427) | 68.01th | v1 |
| Sep 1, 2021 | 3.43% (0.03427) | 81.93th | v1 |
| Apr 14, 2021 | 3.43% (0.03427) | 0.00th | v1 |
References (2)
- http://packetstormsecurity.com/files/147183/MikroTik-6.41.4-Denial-Of-Service.html x_refsource_MISCExploitThird Party AdvisoryVDB Entry
- https://www.exploit-db.com/exploits/44450/ exploitx_refsource_EXPLOIT-DBThird Party AdvisoryVDB Entry
| Link | Providers | Tags |
|---|---|---|
| http://packetstormsecurity.com/files/147183/MikroTik-6.41.4-Denial-Of-Service.html | x_refsource_MISCExploitThird Party AdvisoryVDB Entry | |
| https://www.exploit-db.com/exploits/44450/ | exploitx_refsource_EXPLOIT-DBThird Party AdvisoryVDB Entry |
Change history (0)
No recorded changes yet.