How severe is CVE-2001-0166?

CVE-2001-0166 has a CVSS 2.0 base score of 7.6, rated high severity.

Is CVE-2001-0166 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (75th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2001-0166?

CVE-2001-0166 affects Macromedia Shockwave Flash Plugin. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2001-0166?

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-2001-0166 published?

CVE-2001-0166 was published on 2001-03-26 and last updated on 2026-06-16.

CVE-2001-0166

CVE-2001-0166 is a high-severity vulnerability in Macromedia Shockwave Flash Plugin with a CVSS 2.0 base score of 7.6. 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 7.6)
EPSS exploit prediction: 2% (75th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Macromedia Shockwave Flash Plugin
Published: 2001-03-26
Last modified: 2026-06-16

Description

Macromedia Shockwave Flash plugin version 8 and earlier allows remote attackers to cause a denial of service via malformed tag length specifiers in a SWF file.

Frequently asked questions

What is CVE-2001-0166?: Macromedia Shockwave Flash plugin version 8 and earlier allows remote attackers to cause a denial of service via malformed tag length specifiers in a SWF file.
How severe is CVE-2001-0166?: CVE-2001-0166 has a CVSS 2.0 base score of 7.6, rated high severity.
Is CVE-2001-0166 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (75th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2001-0166?: CVE-2001-0166 affects Macromedia Shockwave Flash Plugin. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2001-0166?: 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-2001-0166 published?: CVE-2001-0166 was published on 2001-03-26 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:macromedia:shockwave_flash_plugin:*:*:*:*:*:*:*:*

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