How severe is CVE-2008-5001?

CVE-2008-5001 has a CVSS 2.0 base score of 9.3, rated critical severity.

Is CVE-2008-5001 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (92nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2008-5001?

CVE-2008-5001 primarily affects Ultravnc. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2008-5001?

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-2008-5001 published?

CVE-2008-5001 was published on 2008-11-10 and last updated on 2026-06-16.

CVE-2008-5001

CVE-2008-5001 is a critical-severity vulnerability in Ultravnc with a CVSS 2.0 base score of 9.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-119.

Key facts

Severity: Critical (CVSS 2.0 base score 9.3)
EPSS exploit prediction: 6% (92nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-119
Affected product: Ultravnc
Published: 2008-11-10
Last modified: 2026-06-16

Description

Multiple stack-based buffer overflows in multiple functions in vncviewer/FileTransfer.cpp in vncviewer for UltraVNC 1.0.2 and 1.0.4 before 01252008, when in LISTENING mode or when using the DSM plugin, allow remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via unspecified parameters, a different issue than CVE-2008-0610.

Frequently asked questions

What is CVE-2008-5001?: Multiple stack-based buffer overflows in multiple functions in vncviewer/FileTransfer.cpp in vncviewer for UltraVNC 1.0.2 and 1.0.4 before 01252008, when in LISTENING mode or when using the DSM plugin, allow remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via unspecified parameters, a different issue than CVE-2008-0610.
How severe is CVE-2008-5001?: CVE-2008-5001 has a CVSS 2.0 base score of 9.3, rated critical severity.
Is CVE-2008-5001 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (92nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2008-5001?: CVE-2008-5001 primarily affects Ultravnc. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2008-5001?: 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-2008-5001 published?: CVE-2008-5001 was published on 2008-11-10 and last updated on 2026-06-16.

References

Affected products (2)

cpe:2.3:a:ultravnc:ultravnc:1.0.2:*:*:*:*:*:*:*
cpe:2.3:a:ultravnc:ultravnc:1.0.4:*:*:*:*:*:*:*

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