CVE-2021-46854
HighPublic PoC
Published: 23 November 2022
Published
23 November 2022
Modified
28 April 2025
KEV Added
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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:H/I:N/A:N
EPSS Score
0.0180
83.2th percentile
Risk Priority
16
60% EPSS · 20% KEV · 20% CVSS
Summary
CVE-2021-46854 is a high-severity Missing Release of Memory after Effective Lifetime (CWE-401) vulnerability in Proftpd Proftpd. Its CVSS base score is 7.5 (High).
Operationally, ranked in the top 16.8% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2021-33508
Vulnerability details
mod_radius in ProFTPD before 1.3.7c allows memory disclosure to RADIUS servers because it copies blocks of 16 characters.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
proftpd
proftpd
≤ 1.3.7c
Mitigating Controls
No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.