MEDIUM
An issue was discovered in Tiny C Compiler (aka TinyCC or TCC) 0.9.27
Published Dec 23, 2018
5.5
MEDIUMCVSS 3.0
EPSS 0.75%
Description
An issue was discovered in Tiny C Compiler (aka TinyCC or TCC) 0.9.27. Compiling a crafted source file leads to an 8 byte out of bounds write in the sym_pop function in tccgen.c.
Affected products
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
5.5 MEDIUM NVD
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required None
User Interaction Required
Scope Unchanged
Confidentiality Impact None
Integrity Impact None
Availability Impact High
4.3 MEDIUM NVD
AV:N/AC:M/Au:N/C:N/I:N/A:P
Access Vector Network
Access Complexity Medium
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.
0.75% 0.00746
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.00746
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 (9 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.75% (0.00746) | 53.12th | v5 (v2026.06.15) |
| Sep 20, 2026 | 0.75% (0.00746) | 53.30th | v5 (v2026.06.15) |
| Jul 20, 2024 | 0.08% (0.00076) | 33.25th | v3 (v2023.03.01) |
| Jun 12, 2024 | 0.08% (0.00076) | 32.77th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.08% (0.00076) | 30.75th | 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 |
Weaknesses (1)
References (1)
- https://lists.nongnu.org/archive/html/tinycc-devel/2018-12/msg00014.html x_refsource_MISCExploitMailing ListThird Party Advisory
| Link | Providers | Tags |
|---|---|---|
| https://lists.nongnu.org/archive/html/tinycc-devel/2018-12/msg00014.html | x_refsource_MISCExploitMailing ListThird Party Advisory |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Dec 23, 2018
Updated Aug 5, 2024
Reserved Dec 23, 2018
Link CVE-2018-20375
CISA Vulnrichment
Updated n/a