Buffer overflow in Kaspersky Lab Ultravnc

CVE-2019-8263

UltraVNC revision 1205 has stack-based buffer overflow vulnerability in VNC client code inside ShowConnInfo routine, which leads to a denial of service (DoS) condition. This attack appear to be exploitable via network connectivity. User interaction is required to trigger this vulnerability. This vulnerability has been fixed in revision 1206.

Vulnerability class: Buffer Overflow

EPSS: 0.025 (82.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2019-8263?
CVE-2019-8263 is a medium-severity vulnerability in Kaspersky Lab Ultravnc, classified under Stack-based Buffer Overflow. CVSS score: 6.5/10. Published 2019-03-05.
How severe is CVE-2019-8263?
Medium severity. CVSS v3 base score is 6.5 out of 10.