CVE-2020-28026

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.

9.8

CVSS

Severity: Critical

CVSS 3.1 •

CVSS 2.0 •

EPSS 1.25% Top 25%

Third-Party Advisory exim.org

Affected: n/a n/a

References

Link	Tags
https://www.exim.org/static/doc/security/CVE-2020-qualys/CVE-2020-28026-FGETS.txt	third party advisory

Frequently Asked Questions

What is the severity of CVE-2020-28026?: CVE-2020-28026 has been scored as a critical severity vulnerability.
How to fix CVE-2020-28026?: To fix CVE-2020-28026, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2020-28026 being actively exploited in the wild?: It is possible that CVE-2020-28026 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.

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