MEDIUM
re2c: uncontrolled recursion that causes stack consumption in find_fixed_tags
Published Apr 29, 2020
5.5
MEDIUMCVSS 3.1
EPSS 1.47%
Description
re2c before 2.0 has uncontrolled recursion that causes stack consumption in find_fixed_tags.
Affected products
Remediation
Red Hat statement
This vulnerability does not affect any version of re2c shipped with any version of Red Hat Enterprise Linux.
Metrics
No CVSS v4.0 score for this CVE.
5.5 MEDIUM NVD
CVSS:3.1/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
No CVSS v3.0 score for this CVE.
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.
1.47% 0.01468
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 2, 2026.
EPSS probability 0.01468
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 2, 2026 | 1.47% (0.01468) | 72.80th | v5 (v2026.06.15) |
| Sep 20, 2026 | 1.47% (0.01468) | 72.56th | v5 (v2026.06.15) |
| Jul 20, 2024 | 0.08% (0.00083) | 35.91th | v3 (v2023.03.01) |
| Jun 21, 2024 | 0.08% (0.00083) | 35.66th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.08% (0.00083) | 33.63th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.95% (0.00954) | 36.37th | v2 (v2022.01.01) |
| Feb 4, 2022 | 0.95% (0.00954) | 16.28th | v2 (v2022.01.01) |
| Feb 3, 2022 | 0.83% (0.00833) | 24.58th | v5 (v2026.06.15) |
| Apr 14, 2021 | 0.83% (0.00833) | 0.00th | v1 |
Weaknesses (1)
References (7)
- http://www.openwall.com/lists/oss-security/2020/05/14/4 mailing-listx_refsource_MLIST
- https://access.redhat.com/security/cve/CVE-2018-21232 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1837650 Issue Tracking
- https://github.com/skvadrik/re2c/issues/219 x_refsource_MISCExploitPatchThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2018-21232
- https://www.cve.org/CVERecord?id=CVE-2018-21232
- https://www.openwall.com/lists/oss-security/2020/04/27/2 x_refsource_MISCMailing ListThird Party Advisory
| Link | Providers | Tags |
|---|---|---|
| http://www.openwall.com/lists/oss-security/2020/05/14/4 | mailing-listx_refsource_MLIST | |
| https://access.redhat.com/security/cve/CVE-2018-21232 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1837650 | Issue Tracking | |
| https://github.com/skvadrik/re2c/issues/219 | x_refsource_MISCExploitPatchThird Party Advisory | |
| https://nvd.nist.gov/vuln/detail/CVE-2018-21232 | ||
| https://www.cve.org/CVERecord?id=CVE-2018-21232 | ||
| https://www.openwall.com/lists/oss-security/2020/04/27/2 | x_refsource_MISCMailing ListThird Party Advisory |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Apr 29, 2020
Updated Aug 5, 2024
Reserved Apr 28, 2020
Link CVE-2018-21232
CISA Vulnrichment
Updated n/a