The Mikrotik RouterOS web server allows memory corruption in releases before Stable 6.38.5 and Long-term 6.37.5, aka Chimay-Red
Published Oct 15, 2022
9.8
CRITICALCVSS 3.1
EPSS 2.00%
Description
The Mikrotik RouterOS web server allows memory corruption in releases before Stable 6.38.5 and Long-term 6.37.5, aka Chimay-Red. A remote and unauthenticated user can trigger the vulnerability by sending a crafted HTTP request. An attacker can use this vulnerability to execute arbitrary code on the affected system, as exploited in the wild in mid-2017 and later.
Affected products
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:H/I:H/A:H
No CVSS v3.0 score for this CVE.
No CVSS v2.0 score for this CVE.
This CVE is not in the KEV list.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
PoCAutomatable
YesTechnical Impact
TotalDecision
n/aAssessed May 14, 2025 · 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
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (20 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 2.00% (0.01999) | 79.98th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.55% (0.02554) | 82.97th | v5 (v2026.06.15) |
| Mar 23, 2026 | 6.30% (0.06300) | 90.86th | v4 (v2025.03.14) |
| Mar 11, 2026 | 4.76% (0.04756) | 89.28th | v4 (v2025.03.14) |
| Mar 10, 2026 | 3.35% (0.03345) | 87.11th | v4 (v2025.03.14) |
| Feb 15, 2026 | 1.78% (0.01782) | 82.36th | v4 (v2025.03.14) |
| Mar 30, 2025 | 0.74% (0.00740) | 70.60th | v4 (v2025.03.14) |
| Mar 29, 2025 | 2.78% (0.02782) | 76.74th | v4 (v2025.03.14) |
| Mar 17, 2025 | 0.74% (0.00740) | 71.21th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.40% (0.00405) | 74.57th | v3 (v2023.03.01) |
| May 7, 2024 | 0.40% (0.00405) | 73.58th | v3 (v2023.03.01) |
| Mar 27, 2024 | 0.32% (0.00320) | 69.99th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.44% (0.00441) | 74.09th | v3 (v2023.03.01) |
| Nov 16, 2023 | 0.44% (0.00441) | 71.96th | v3 (v2023.03.01) |
| Sep 14, 2023 | 0.32% (0.00319) | 66.82th | v3 (v2023.03.01) |
| Sep 3, 2023 | 0.24% (0.00244) | 61.55th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.17% (0.00171) | 52.43th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.44% (0.01440) | 73.47th | v2 (v2022.01.01) |
| Oct 21, 2022 | 1.44% (0.01440) | 72.90th | v2 (v2022.01.01) |
| Oct 15, 2022 | 2.48% (0.02485) | 81.06th | v2 (v2022.01.01) |
References (2)
- https://github.com/BigNerd95/Chimay-Red ExploitThird Party Advisory
- https://www.bleepingcomputer.com/news/security/hajime-botnet-makes-a-comeback-with-massive-scan-for-mikrotik-routers/ ExploitThird Party Advisory
| Link | Providers | Tags |
|---|---|---|
| https://github.com/BigNerd95/Chimay-Red | ExploitThird Party Advisory | |
| https://www.bleepingcomputer.com/news/security/hajime-botnet-makes-a-comeback-with-massive-scan-for-mikrotik-routers/ | ExploitThird Party Advisory |
Change history (0)
No recorded changes yet.