CVE-2007-0756

CVE-2007-0756 is a high-severity vulnerability in Chicken Of The Vnc with a CVSS 2.0 base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Description

Chicken of the VNC (cotv) 2.0 allows remote attackers to cause a denial of service (application crash) via a large computer-name size value in a ServerInit packet, which triggers a failed malloc and a resulting NULL dereference.

Frequently asked questions

What is CVE-2007-0756?
Chicken of the VNC (cotv) 2.0 allows remote attackers to cause a denial of service (application crash) via a large computer-name size value in a ServerInit packet, which triggers a failed malloc and a resulting NULL dereference.
How severe is CVE-2007-0756?
CVE-2007-0756 has a CVSS 2.0 base score of 7.8, rated high severity.
Is CVE-2007-0756 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (90th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2007-0756?
CVE-2007-0756 affects Chicken Of The Vnc. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2007-0756?
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-2007-0756 published?
CVE-2007-0756 was published on 2007-02-06 and last updated on 2026-06-16.

References

Affected products (1)