Security readout for executives and security teams
This flaw is in software that decodes TNEF email attachments. A malicious email could make affected parsers write files where they should not, crash, or potentially run code. The provided sources do not show active exploitation or a confirmed patched version. Exposure is most likely on endpoints or mail-processing systems that use yTNEF 2.8 or Evolution's derived TNEF parser to decode TNEF attachments. The source bundle does not identify broader affected versions, platforms, or default configurations. Prioritize remediation where affected parsers handle external email automatically or at scale. The business risk is higher for mail gateways and shared processing services than isolated legacy desktops. Evidence is incomplete for active exploitation and exact fixed versions. Mitigation focus: Inventory systems using yTNEF 2.8 or Evolution TNEF parsing.; Check vendor or distribution advisories for fixed packages and upgrade guidance.; Reduce or disable untrusted TNEF attachment decoding where operationally possible..
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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CWE-22: File access and web shell behavior lookup
File traversal and upload weaknesses can lead teams to review file, web shell, execution, and collection telemetry. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupFile access behavior lookup
The CVE wording references file access or upload behavior, so file telemetry and web shell review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2009-3721 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
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
- https://bugzilla.redhat.com/show_bug.cgi?id=521662CVE reference · x_refsource_MISC
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.