Vulnerability Intelligence Report
CVE-2020-8794
OpenSMTPD before 6.6.4 allows remote code execution because of an out-of-bounds read in mta_io in mta_session.c for multi-line replies. Although this vulnerability affects the client side of OpenSMTPD, it is possible to attack a server because the server code launches the client code during bounce handling.
No Active Exploit Signals
CVSS Base Score
9.8
CRITICAL
EPSS Probability:88.53%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
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Authentication
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Weaponization
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SSVC Action
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Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| opensmtpd | opensmtpd | all |
| canonical | ubuntu_linux | 18.04, 19.10 |
| fedoraproject | fedora | 31, 32 |
| debian | debian_linux | 9.0, 10.0 |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
EPSS Score
88.535%
GitHub Advisory
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | MITRE Corporation · N/A · USA |
| Reserved | 2020-02-07T00:00:00 |
| Published | 2020-02-25T16:38:07 |
| Last Updated | 2024-08-04T10:12:10 |
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