HIGH
An issue was discovered in mruby 1.4.1
Published Jun 12, 2018
7.5
HIGHCVSS 3.0
EPSS 1.55%
Description
An issue was discovered in mruby 1.4.1. There is a NULL pointer dereference in mrb_class, related to certain .clone usage, because mrb_obj_clone in kernel.c copies flags other than the MRB_FLAG_IS_FROZEN flag (e.g., the embedded flag).
Affected products
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
7.5 HIGH NVD
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Impact None
Integrity Impact None
Availability Impact High
5.0 MEDIUM NVD
AV:N/AC:L/Au:N/C:N/I:N/A:P
Access Vector Network
Access Complexity Low
Authentication None
Confidentiality Impact None
Integrity Impact None
Availability Impact Partial
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
1.55% 0.01552
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.01552
Score over time
2021–2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Table of values (12 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.55% (0.01552) | 74.20th | v5 (v2026.06.15) |
| Sep 20, 2026 | 1.55% (0.01552) | 73.99th | v5 (v2026.06.15) |
| Jul 20, 2024 | 0.09% (0.00091) | 39.47th | v3 (v2023.03.01) |
| Apr 25, 2024 | 0.09% (0.00091) | 38.23th | v3 (v2023.03.01) |
| Mar 15, 2024 | 0.09% (0.00088) | 36.20th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.08% (0.00079) | 32.31th | v3 (v2023.03.01) |
| Nov 3, 2023 | 0.10% (0.00097) | 40.34th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.10% (0.00105) | 41.25th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.89% (0.00885) | 27.89th | v2 (v2022.01.01) |
| Feb 4, 2022 | 0.89% (0.00885) | 10.50th | v2 (v2022.01.01) |
| Feb 3, 2022 | 0.62% (0.00624) | 17.80th | v5 (v2026.06.15) |
| Apr 14, 2021 | 0.62% (0.00624) | 0.00th | v1 |
Weaknesses (1)
References (2)
- https://github.com/mruby/mruby/commit/55edae0226409de25e59922807cb09acb45731a2 x_refsource_MISCPatchThird Party Advisory
- https://github.com/mruby/mruby/issues/4036 x_refsource_MISCIssue TrackingThird Party Advisory
| Link | Providers | Tags |
|---|---|---|
| https://github.com/mruby/mruby/commit/55edae0226409de25e59922807cb09acb45731a2 | x_refsource_MISCPatchThird Party Advisory | |
| https://github.com/mruby/mruby/issues/4036 | x_refsource_MISCIssue TrackingThird Party Advisory |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Jun 12, 2018
Updated Sep 16, 2024
Reserved Jun 12, 2018
Link CVE-2018-12247
CISA Vulnrichment
Updated n/a