Remote Code Execution Vulnerability in PHPMailer for Windows
CVE-2021-34551

8.1HIGH

Key Information:

Vendor

PHPmailer Project

Status
PHPmailer
Vendor
CVE Published:
16 June 2021

What is CVE-2021-34551?

PHPMailer versions prior to 6.5.0 on Windows are vulnerable to remote code execution due to the processing of untrusted data in the 'lang_path' parameter when handling UNC paths. Attackers could exploit this flaw to execute arbitrary code on the host system, potentially leading to severe security breaches. Users are advised to update to the latest version to mitigate this risk.

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References

https://github.com/PHPMailer/PHPMailer/blob/master/SECURI...
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https://lists.fedoraproject.org/archives/list/package-ann...
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https://lists.fedoraproject.org/archives/list/package-ann...
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CVSS V3.1

Score:
8.1
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

JSON
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