CVE-2020-28026
Critical
Description
Exim 4 before 4.94.2 has Improper Neutralization of Line Delimiters, relevant in non-default configurations that enable Delivery Status Notification (DSN). Certain uses of ORCPT= can place a newline into a spool header file, and indirectly allow unauthenticated remote attackers to execute arbitrary commands as root.
SeverityCritical
CVSS9.8
Exploit probability—
Product
Exim
PublishedMay 6, 2021
First seenMay 6, 2021
How to fix
Update
- exim exim4.94.2 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| exim exim | 4.00 ≤ v < 4.94.2 | 4.94.2 |
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