Security readout for executives and security teams
This is a legacy SquirrelMail webmail XSS flaw. A malicious email could contain crafted styling that runs script or injects HTML when viewed in vulnerable SquirrelMail. Business urgency is mainly for organizations still running old SquirrelMail or unpatched vendor packages. Exposure is likely limited to legacy SquirrelMail deployments before 1.4.22 and vendor-packaged versions covered by Debian, Red Hat, Mandriva, or Apple advisories. Systems that no longer use SquirrelMail or have applied those updates are unlikely to be exposed. Treat as a targeted legacy exposure item, not a current mass-emergency based on the provided evidence. Prioritize remediation if SquirrelMail is still reachable, used for privileged mail, or unmaintained. Mitigation focus: Upgrade SquirrelMail to 1.4.22 or later where directly installed.; Apply relevant Debian, Red Hat, Mandriva, or Apple vendor updates.; Retire internet-facing legacy SquirrelMail where it is no longer required..
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-2011-2023 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
- https://bugzilla.redhat.com/show_bug.cgi?id=720695CVE reference · x_refsource_CONFIRM
Products and packages named in the record
CWE details
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