CVE-2021-34551: Remote Code Execution vulnerability in PHPMailer 6.4.1 running on Windows

CVE-2021-34551 · Severity: low · CVSS 3.1 · Published 2021-06-22

Remote Code Execution vulnerability in PHPMailer 6.4.1 running on Windows

Technologies: phpmailer/phpmailer (Packagist). Vendors: Packagist.

Quick answers

Is CVE-2021-34551 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2021-34551 being exploited in the wild.
How severe is CVE-2021-34551?
Low severity, with a CVSS score of 3.1, published 22 June 2021.
Which products and versions are affected?
phpmailer/phpmailer (Packagist) ECOSYSTEM:introduced=0,fixed=6.5.0.
Is there a fix for CVE-2021-34551?
Yes. phpmailer/phpmailer (Packagist): upgrade to 6.5.0 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
Am I affected by CVE-2021-34551?
Check whether you run phpmailer/phpmailer (Packagist) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • phpmailer/phpmailer (Packagist): upgrade to 6.5.0 or later
    composer require phpmailer/phpmailer:^6.5.0

Affected products

  • phpmailer/phpmailer (Packagist) ECOSYSTEM:introduced=0,fixed=6.5.0

Identifiers

  • CVE-2021-34551
  • GHSA-7q44-r25x-wm4q

This page as Markdown. Free to reuse under CC BY 4.0 with a link back.