CVE-2000-0621
CVE-2000-0621 is a high-severity vulnerability in Microsoft Outlook with a CVSS 2.0 base score of 7.5. Its EPSS exploit-prediction score of 22% places it in the 97th percentile, indicating an elevated likelihood of exploitation.
Key facts
- Severity: High (CVSS 2.0 base score 7.5)
- EPSS exploit prediction: 22% (97th percentile)
- Actively exploited: Not listed in CISA KEV
- Affected product: Microsoft Outlook
- Published:
- Last modified:
Description
Microsoft Outlook 98 and 2000, and Outlook Express 4.0x and 5.0x, allow remote attackers to read files on the client's system via a malformed HTML message that stores files outside of the cache, aka the "Cache Bypass" vulnerability.
Frequently asked questions
- What is CVE-2000-0621?
- Microsoft Outlook 98 and 2000, and Outlook Express 4.0x and 5.0x, allow remote attackers to read files on the client's system via a malformed HTML message that stores files outside of the cache, aka the "Cache Bypass" vulnerability.
- How severe is CVE-2000-0621?
- CVE-2000-0621 has a CVSS 2.0 base score of 7.5, rated high severity.
- Is CVE-2000-0621 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 22% (97th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2000-0621?
- CVE-2000-0621 primarily affects Microsoft Outlook. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2000-0621?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- When was CVE-2000-0621 published?
- CVE-2000-0621 was published on 2000-07-20 and last updated on 2026-06-16.
References
- http://www.cert.org/advisories/CA-2000-14.html
- http://www.securityfocus.com/bid/1501
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2000/ms00-046
- https://exchange.xforce.ibmcloud.com/vulnerabilities/5013
Affected products (7)
- cpe:2.3:a:microsoft:outlook:97:*:*:*:*:*:*:*
- cpe:2.3:a:microsoft:outlook:98:*:*:*:*:*:*:*
- cpe:2.3:a:microsoft:outlook:2000:*:*:*:*:*:*:*
- cpe:2.3:a:microsoft:outlook_express:4.0:*:*:*:*:*:*:*
- cpe:2.3:a:microsoft:outlook_express:4.01:*:*:*:*:*:*:*
- cpe:2.3:a:microsoft:outlook_express:5.0:*:*:*:*:*:*:*
- cpe:2.3:a:microsoft:outlook_express:5.0.1:*:*:*:*:*:*:*
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