CRITICAL
The installer in MyBB before 1.8.13 allows remote attackers to execute arbitrary code by writing to the configuration file
Published Nov 10, 2017
9.8
CRITICALCVSS 3.0
EPSS 5.77%
Description
The installer in MyBB before 1.8.13 allows remote attackers to execute arbitrary code by writing to the configuration file.
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.
5.77% 0.05766
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.05766
Score over time
2021–2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Table of values (23 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 5.77% (0.05766) | 92.85th | v5 (v2026.06.15) |
| Sep 22, 2026 | 5.77% (0.05766) | 92.74th | v5 (v2026.06.15) |
| Sep 21, 2026 | 4.64% (0.04638) | 91.31th | v5 (v2026.06.15) |
| Sep 6, 2026 | 5.77% (0.05766) | 92.58th | v5 (v2026.06.15) |
| Sep 5, 2026 | 4.64% (0.04638) | 91.11th | v5 (v2026.06.15) |
| Aug 30, 2026 | 5.77% (0.05766) | 92.55th | v5 (v2026.06.15) |
| Aug 28, 2026 | 4.64% (0.04638) | 91.06th | v5 (v2026.06.15) |
| Aug 24, 2026 | 5.77% (0.05766) | 92.50th | v5 (v2026.06.15) |
| Aug 23, 2026 | 4.64% (0.04638) | 91.03th | v5 (v2026.06.15) |
| Jun 15, 2026 | 5.77% (0.05766) | 92.08th | v5 (v2026.06.15) |
| Mar 17, 2025 | 2.02% (0.02023) | 82.57th | v4 (v2025.03.14) |
| Dec 17, 2024 | 1.99% (0.01992) | 88.50th | v3 (v2023.03.01) |
| Jun 13, 2024 | 5.16% (0.05162) | 93.01th | v3 (v2023.03.01) |
| May 6, 2024 | 4.59% (0.04587) | 92.50th | v3 (v2023.03.01) |
| Feb 14, 2024 | 4.57% (0.04570) | 92.22th | v3 (v2023.03.01) |
| Oct 21, 2023 | 3.76% (0.03764) | 90.78th | v3 (v2023.03.01) |
| Sep 20, 2023 | 4.06% (0.04061) | 91.06th | v3 (v2023.03.01) |
| Sep 3, 2023 | 2.40% (0.02403) | 88.53th | v3 (v2023.03.01) |
| Mar 7, 2023 | 2.51% (0.02513) | 88.44th | v3 (v2023.03.01) |
| Mar 6, 2023 | 5.37% (0.05365) | 89.93th | v2 (v2022.01.01) |
| Feb 4, 2022 | 5.37% (0.05365) | 76.10th | v2 (v2022.01.01) |
| Feb 3, 2022 | 5.88% (0.05885) | 81.24th | v5 (v2026.06.15) |
| Apr 14, 2021 | 5.88% (0.05885) | 0.00th | v1 |
Weaknesses (1)
References (2)
- https://blog.mybb.com/2017/11/07/mybb-1-8-13-released-security-maintenance-release/ x_refsource_CONFIRMRelease NotesVendor Advisory
- https://www.exploit-db.com/exploits/43136/ exploitx_refsource_EXPLOIT-DBThird Party AdvisoryVDB Entry
| Link | Providers | Tags |
|---|---|---|
| https://blog.mybb.com/2017/11/07/mybb-1-8-13-released-security-maintenance-release/ | x_refsource_CONFIRMRelease NotesVendor Advisory | |
| https://www.exploit-db.com/exploits/43136/ | exploitx_refsource_EXPLOIT-DBThird Party AdvisoryVDB Entry |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Nov 10, 2017
Updated Aug 5, 2024
Reserved Nov 10, 2017
Link CVE-2017-16780
CISA Vulnrichment
Updated n/a