CVE-2020-12618

Description

eM Client before 7.2.33412.0 automatically imported S/MIME certificates and thereby silently replaced existing ones. This allowed a man-in-the-middle attacker to obtain an email-validated S/MIME certificate from a trusted CA and replace the public key of the entity to be impersonated. This enabled the attacker to decipher further communication. The entire attack could be accomplished by sending a single email.

4.8

CVSS

Severity: Medium

CVSS 3.1 •

CVSS 2.0 •

EPSS 0.12%

Vendor Advisory emclient.com

Affected: n/a n/a

References

Link	Tags
https://www.emclient.com/release-history	release notes vendor advisory
https://www.nds.ruhr-uni-bochum.de/media/nds/veroeffentlichungen/2020/08/15/mailto-paper.pdf	third party advisory

Frequently Asked Questions

What is the severity of CVE-2020-12618?: CVE-2020-12618 has been scored as a medium severity vulnerability.
How to fix CVE-2020-12618?: To fix CVE-2020-12618, 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-2020-12618 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2020-12618 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.

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