What’s Vulnerable › Vulnerabilities

CVE-2021-28042

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 3.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-03-05 · updated 2026-06-17
• Weakness: CWE-22

Description

Deutsche Post Mailoptimizer 4.3 before 2020-11-09 allows Directory Traversal via a crafted ZIP archive to the Upload feature or the MO Connect component. This can lead to remote code execution.

Affected products

• Deutschepost Mailoptimizer: 4.3

References

• https://herolab.usd.de/security-advisories/usd-2020-0028/
• https://www.deutschepost.de/de/m/mailoptimizer.html
• https://herolab.usd.de/security-advisories/usd-2020-0028/
• https://www.deutschepost.de/de/m/mailoptimizer.html

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