Vulnerability Details CVE-2020-28024
Exim 4 before 4.94.2 allows Buffer Underwrite that may result in unauthenticated remote attackers executing arbitrary commands, because smtp_ungetc was only intended to push back characters, but can actually push back non-character error codes such as EOF.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.056
EPSS Ranking 90.0%
CVSS Severity
CVSS v3 Score 9.8
CVSS v2 Score 7.5
Products affected by CVE-2020-28024
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cpe:2.3:a:exim:exim:4.80.1
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cpe:2.3:a:exim:exim:4.82.1
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cpe:2.3:a:exim:exim:4.84.2
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cpe:2.3:a:exim:exim:4.85.1
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cpe:2.3:a:exim:exim:4.85.2
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cpe:2.3:a:exim:exim:4.86.1
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cpe:2.3:a:exim:exim:4.86.2
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cpe:2.3:a:exim:exim:4.87.1
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cpe:2.3:a:exim:exim:4.89.1
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cpe:2.3:a:exim:exim:4.90.0.22
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cpe:2.3:a:exim:exim:4.90.0.27
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cpe:2.3:a:exim:exim:4.90.1
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cpe:2.3:a:exim:exim:4.92.1
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cpe:2.3:a:exim:exim:4.92.2
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cpe:2.3:a:exim:exim:4.93.0.4
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cpe:2.3:a:exim:exim:4.93.0.4-3.1
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cpe:2.3:a:exim:exim:4.94.1