CVE-2021-3803
HighPublic PoC
Published: 17 September 2021
Published
17 September 2021
Modified
21 November 2024
KEV Added
—
Patch
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CVSS Score v3.1
7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS Score
0.0017
37.5th percentile
Risk Priority
15
60% EPSS · 20% KEV · 20% CVSS
Summary
CVE-2021-3803 is a high-severity Inefficient Regular Expression Complexity (CWE-1333) vulnerability in Nth-Check Project Nth-Check. Its CVSS base score is 7.5 (High).
Operationally, ranked at the 37.5th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2021-2109
Vulnerability details
nth-check is vulnerable to Inefficient Regular Expression Complexity
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
nth-check project
nth-check
≤ 2.0.1
debian
debian linux
10.0
Mitigating Controls
No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.