Security readout for executives and security teams
This is an old local file-overwrite issue in the semi MIME library and wemi. A user who already has local access could abuse insecure temporary-file handling to overwrite files through symbolic links. The sources do not provide CVSS, confirmed active exploitation, or detailed fixed versions beyond vendor advisory references. Exposure is most likely on legacy Unix/Linux systems with semi or wemi installed, especially through old distribution packages. Modern environments are unlikely to be affected unless they retain historical Emacs/MIME tooling or unmaintained package mirrors. Treat this as a legacy exposure cleanup item, not an internet-scale emergency. It matters most for older shared systems where local users exist. The absence of active exploitation evidence lowers urgency, but arbitrary file overwrite can still affect integrity and availability. Mitigation focus: Check Debian DSA-339 and Red Hat RHSA-2003:231/RHSA-2003:234 for vendor remediation guidance.; Inventory and retire legacy semi or wemi installations where they are no longer needed.; Restrict untrusted local user access on systems until vendor guidance is applied..
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
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ATT&CK lookup starting points
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CVE-2003-0440 mapping review
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Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
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CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- oval:org.mitre.oval:def:569CVE reference · vdb-entry, signature
Products and packages named in the record
CWE details
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