Cyber Resilience

CVE-2021-28042

High

Published: 05 March 2021

Published
05 March 2021
Modified
21 November 2024
KEV Added
—
Patch
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CVSS Score v3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS Score 0.0319 87.3th percentile
Risk Priority 18 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2021-28042 is a high-severity Path Traversal (CWE-22) vulnerability in Deutschepost Mailoptimizer. Its CVSS base score is 7.8 (High).

Operationally, ranked in the top 12.7% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

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.

CWE(s)
CWE-22

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

deutschepost
mailoptimizer
4.3

Mitigating Controls

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

SI-10 Information Input Validation
addresses: CWE-22

Validates pathnames and filenames to prevent traversal outside intended directories.

References