CVE-2020-28020
Critical
Published: 06 May 2021
Published
06 May 2021
Modified
21 November 2024
KEV Added
—
Patch
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CVSS Score v3.1
9.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS Score
0.2659
96.5th percentile
Risk Priority
36
60% EPSS · 20% KEV · 20% CVSS
Summary
CVE-2020-28020 is a critical-severity Integer Overflow or Wraparound (CWE-190) vulnerability in Exim Exim. Its CVSS base score is 9.8 (Critical).
Operationally, ranked in the top 3.5% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2020-20511
Vulnerability details
Exim 4 before 4.92 allows Integer Overflow to Buffer Overflow, in which an unauthenticated remote attacker can execute arbitrary code by leveraging the mishandling of continuation lines during header-length restriction.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
exim
exim
4.00 — 4.92
Mitigating Controls
No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.