The CHECK macro in mrbgems/mruby-sprintf/src/sprintf.c in mruby 1.4.1 contains a signed integer overflow, possibly leading to out-of-bounds memory access because the mrb_str_resize function in string.c does not check for a negative length
Published Jul 17, 2018
7.5
HIGHCVSS 3.1
EPSS 1.39%
Description
The CHECK macro in mrbgems/mruby-sprintf/src/sprintf.c in mruby 1.4.1 contains a signed integer overflow, possibly leading to out-of-bounds memory access because the mrb_str_resize function in string.c does not check for a negative length.
Affected products
No data.
Configuration 2
- 9.0
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
No CVSS v3.0 score for this CVE.
AV:N/AC:L/Au:N/C:P/I:N/A:N
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 v5
- EPSS v2
- EPSS v3
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Table of values (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 1.39% (0.01392) | 71.39th | v5 (v2026.06.15) |
| Sep 20, 2026 | 1.39% (0.01392) | 71.13th | v5 (v2026.06.15) |
| Jul 20, 2024 | 0.27% (0.00266) | 66.60th | v3 (v2023.03.01) |
| May 18, 2024 | 0.27% (0.00266) | 66.13th | v3 (v2023.03.01) |
| Jan 16, 2024 | 0.27% (0.00266) | 64.13th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.37% (0.00374) | 68.43th | 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 | 0.42% (0.00416) | 10.04th | v5 (v2026.06.15) |
| Apr 14, 2021 | 0.42% (0.00416) | 0.00th | v1 |
References (2)
- https://github.com/mruby/mruby/issues/4062 x_refsource_MISCExploitIssue TrackingThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/05/msg00006.html mailing-listx_refsource_MLISTMailing ListThird Party Advisory
| Link | Providers | Tags |
|---|---|---|
| https://github.com/mruby/mruby/issues/4062 | x_refsource_MISCExploitIssue TrackingThird Party Advisory | |
| https://lists.debian.org/debian-lts-announce/2022/05/msg00006.html | mailing-listx_refsource_MLISTMailing ListThird Party Advisory |
Change history (0)
No recorded changes yet.