Security readout for executives and security teams
Pegasus Mail 3.11, an older email client, has a flaw where a specially crafted long email containing binary data can crash the program and might let an attacker run commands on the recipient's computer. The risk is limited today because the affected version is 25 years old, but any lingering installations remain vulnerable when opening malicious mail. Exposure is limited to endpoints still running Pegasus Mail 3.11 from 2000. Modern enterprise fleets are extremely unlikely to run this version, but legacy workstations, archived VMs, or hobbyist installs could still be present and process incoming email. Low priority for modern environments. Treat as a hygiene item: confirm no legacy Pegasus Mail 3.11 installs remain. Only elevate if inventory surfaces active use, in which case decommission or isolate promptly. Mitigation focus: Inventory endpoints for any Pegasus Mail 3.11 installations and prioritize removal.; Upgrade to a currently supported email client and consult vendor guidance for any legacy Pegasus Mail systems.; Block or quarantine unusually large or malformed inbound messages at the mail gateway..
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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CVE-2000-0931 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
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Source materials
- CVE List V5 sourceCVE List V5
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CWE details
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