Security readout for executives and security teams
Plain-English summary
This is an old reported buffer overflow in the mutt mail client. A specially malformed MIME email could let a remote attacker execute commands in the context of the user or process handling the message. The source bundle does not identify affected versions, CVSS severity, or a vendor fix.
Executive priority
Prioritize as a legacy exposure check, not an active-exploitation emergency based on the bundle. Escalate if mutt is still used for untrusted mail or unsupported systems remain in scope.
Technical view
CVE-1999-0940 describes a buffer overflow in mutt triggered by malformed MIME messages, with possible remote command execution. The provided record lacks CVSS data, CWE mapping, concrete affected version ranges, and patch details. KEV status is false in the bundle.
Likely exposure
Exposure is most likely on systems or user workstations using mutt to open or process untrusted MIME email. Scope cannot be determined from the provided sources because affected versions are not listed.
Exploitation context
The bundle does not cite active exploitation, and KEV is false. The described attack path is remote delivery of a malformed MIME message to a mutt user or process.
Researcher notes
The public data provided is sparse: product name appears in the description, but affected versions and remediation are absent. Treat conclusions beyond malformed-MIME-triggered buffer overflow and potential command execution as unconfirmed.
Mitigation direction
- Inventory systems and users running mutt.
- Check vendor or OS package advisories for CVE-1999-0940 guidance.
- Upgrade or replace unsupported mutt installations where vendor guidance recommends it.
- Reduce mutt use for untrusted mail until exposure is clarified.
Validation and detection
- Confirm whether mutt is installed on endpoints and mail-processing hosts.
- Record mutt versions and package source for each exposed system.
- Compare installed versions against vendor advisories, not assumptions.
- Review whether mutt handles untrusted MIME email in production workflows.
Public sources used
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
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CVE-1999-0940 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
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
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://exchange.xforce.ibmcloud.com/vulnerabilities/CVE-1999-0940CVE 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.