MikroTik RouterBOARD v6.39.2 and v6.40.5 allows an unauthenticated remote attacker to cause a denial of service by connecting to TCP port 53 and sending data that begins with many '\0' characters, possibly related to DNS
Published Dec 13, 2017
7.5
HIGHCVSS 3.0
EPSS 1.75%
Description
MikroTik RouterBOARD v6.39.2 and v6.40.5 allows an unauthenticated remote attacker to cause a denial of service by connecting to TCP port 53 and sending data that begins with many '\0' characters, possibly related to DNS.
Affected products
No data.
- 6.39.2
- 6.40.5
Running on/with
- 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:U/C:N/I:N/A:H
AV:N/AC:L/Au:N/C:N/I:N/A:P
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 2, 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 (15 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 1.75% (0.01750) | 77.04th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.62% (0.01619) | 72.85th | v5 (v2026.06.15) |
| Mar 17, 2025 | 1.00% (0.00995) | 75.38th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.51% (0.00510) | 77.36th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.51% (0.00510) | 75.90th | v3 (v2023.03.01) |
| Oct 23, 2023 | 0.51% (0.00510) | 73.89th | v3 (v2023.03.01) |
| May 6, 2023 | 0.52% (0.00516) | 73.28th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.63% (0.00630) | 75.77th | 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 | 2.86% (0.02857) | 63.60th | v1 |
| Jan 6, 2022 | 2.86% (0.02857) | 63.25th | v1 |
| Sep 1, 2021 | 2.86% (0.02857) | 80.57th | v1 |
| Apr 14, 2021 | 2.86% (0.02857) | 0.00th | v1 |
References (2)
- https://packetstorm.news/files/id/145382
- https://www.exploit-db.com/exploits/43200/ exploitBroken LinkThird Party AdvisoryVDB Entry
| Link | Providers | Tags |
|---|---|---|
| https://packetstorm.news/files/id/145382 | ||
| https://www.exploit-db.com/exploits/43200/ | exploitBroken LinkThird Party AdvisoryVDB Entry |
Change history (0)
No recorded changes yet.