How severe is CVE-2001-0477?

CVE-2001-0477 has a CVSS 2.0 base score of 7.5, rated high severity.

Is CVE-2001-0477 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (89th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2001-0477?

CVE-2001-0477 primarily affects Webcalendar. In total, 12 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2001-0477?

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-2001-0477 published?

CVE-2001-0477 was published on 2001-06-27 and last updated on 2026-06-16.

CVE-2001-0477

CVE-2001-0477 is a high-severity vulnerability in Webcalendar with a CVSS 2.0 base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 2.0 base score 7.5)
EPSS exploit prediction: 4% (89th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Webcalendar
Published: 2001-06-27
Last modified: 2026-06-16

Description

Vulnerability in WebCalendar 0.9.26 allows remote command execution.

Frequently asked questions

What is CVE-2001-0477?: Vulnerability in WebCalendar 0.9.26 allows remote command execution.
How severe is CVE-2001-0477?: CVE-2001-0477 has a CVSS 2.0 base score of 7.5, rated high severity.
Is CVE-2001-0477 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (89th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2001-0477?: CVE-2001-0477 primarily affects Webcalendar. In total, 12 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2001-0477?: 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-2001-0477 published?: CVE-2001-0477 was published on 2001-06-27 and last updated on 2026-06-16.

References

Affected products (12)

cpe:2.3:a:webcalendar:webcalendar:0.9.8:*:*:*:*:*:*:*
cpe:2.3:a:webcalendar:webcalendar:0.9.11:*:*:*:*:*:*:*
cpe:2.3:a:webcalendar:webcalendar:0.9.15:*:*:*:*:*:*:*
cpe:2.3:a:webcalendar:webcalendar:0.9.16:*:*:*:*:*:*:*
cpe:2.3:a:webcalendar:webcalendar:0.9.19:*:*:*:*:*:*:*
cpe:2.3:a:webcalendar:webcalendar:0.9.20:*:*:*:*:*:*:*
cpe:2.3:a:webcalendar:webcalendar:0.9.21:*:*:*:*:*:*:*
cpe:2.3:a:webcalendar:webcalendar:0.9.22:*:*:*:*:*:*:*
cpe:2.3:a:webcalendar:webcalendar:0.9.23:*:*:*:*:*:*:*
cpe:2.3:a:webcalendar:webcalendar:0.9.24:*:*:*:*:*:*:*
cpe:2.3:a:webcalendar:webcalendar:0.9.25:*:*:*:*:*:*:*
cpe:2.3:a:webcalendar:webcalendar:0.9.26:*:*:*:*:*:*:*

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