How severe is CVE-2001-0168?

CVE-2001-0168 has a CVSS 2.0 base score of 10.0, rated critical severity.

Is CVE-2001-0168 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 71% (99th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2001-0168?

CVE-2001-0168 affects Att Winvnc. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2001-0168?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2001-0168 published?

CVE-2001-0168 was published on 2001-05-03 and last updated on 2026-06-16.

CVE-2001-0168

CVE-2001-0168 is a critical-severity vulnerability in Att Winvnc with a CVSS 2.0 base score of 10.0. Its EPSS exploit-prediction score of 71% places it in the 99th percentile, indicating an elevated likelihood of exploitation.

Key facts

Severity: Critical (CVSS 2.0 base score 10.0)
EPSS exploit prediction: 71% (99th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Att Winvnc
Published: 2001-05-03
Last modified: 2026-06-16

Description

Buffer overflow in AT&T WinVNC (Virtual Network Computing) server 3.3.3r7 and earlier allows remote attackers to execute arbitrary commands via a long HTTP GET request when the DebugLevel registry key is greater than 0.

Frequently asked questions

What is CVE-2001-0168?: Buffer overflow in AT&T WinVNC (Virtual Network Computing) server 3.3.3r7 and earlier allows remote attackers to execute arbitrary commands via a long HTTP GET request when the DebugLevel registry key is greater than 0.
How severe is CVE-2001-0168?: CVE-2001-0168 has a CVSS 2.0 base score of 10.0, rated critical severity.
Is CVE-2001-0168 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 71% (99th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2001-0168?: CVE-2001-0168 affects Att Winvnc. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2001-0168?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2001-0168 published?: CVE-2001-0168 was published on 2001-05-03 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:att:winvnc:*:*:*:*:*:*:*:*

More vulnerabilities in Att Winvnc

CVE-2000-1164 — Critical (CVSS 9.0): WinVNC installs the WinVNC3 registry key with permissions that give Special Access (read and modify) to the Everybody…
CVE-2001-0167 — High (CVSS 7.6): Buffer overflow in AT&T WinVNC (Virtual Network Computing) client 3.3.3r7 and earlier allows remote attackers to…
CVE-2001-1422 — High (CVSS 7.5): WinVNC 3.3.3 and earlier generates the same challenge string for multiple connections, which allows remote attackers to…

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