What’s Vulnerable › Vulnerabilities

CVE-2020-14224

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-12-18 · updated 2026-06-17
• Weakness: CWE-787

Description

A vulnerability in the MIME message handling of the HCL Notes v9 client could potentially be exploited by an unauthenticated attacker resulting in a stack buffer overflow. This could allow a remote attacker to crash the Notes application or inject code into the system which would execute with the privileges of the currently logged-in user.

Affected products

• HCL Notes: 9.0, 9.0.1

References

• https://support.hcltechsw.com/csm?id=kb_article&sysparm_article=KB0085913
• https://support.hcltechsw.com/csm?id=kb_article&sysparm_article=KB0085913

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