CVE-2023-24021
High
Published: 20 January 2023
Published
20 January 2023
Modified
02 April 2025
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:H/A:N
EPSS Score
0.0014
34.0th percentile
Risk Priority
15
60% EPSS · 20% KEV · 20% CVSS
Summary
CVE-2023-24021 is a high-severity Improper Null Termination (CWE-170) vulnerability in Trustwave Modsecurity. Its CVSS base score is 7.5 (High).
Operationally, ranked at the 34.0th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2023-28085
Vulnerability details
Incorrect handling of '\0' bytes in file uploads in ModSecurity before 2.9.7 may allow for Web Application Firewall bypasses and buffer over-reads on the Web Application Firewall when executing rules that read the FILES_TMP_CONTENT collection.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
trustwave
modsecurity
≤ 2.9.7
debian
debian linux
10.0
Mitigating Controls
No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.