What is CVE-2019-8261?

CVE-2019-8261 is a critical-severity vulnerability in Ultravnc, classified under Out-of-bounds Read. CVSS score: 9.8/10. Published 2019-03-05.

How severe is CVE-2019-8261?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Out-of-bounds Read in Ultravnc

CVE-2019-8261

UltraVNC revision 1199 has a out-of-bounds read vulnerability in VNC code inside client CoRRE decoder, caused by multiplication overflow. This attack appears to be exploitable via network connectivity. This vulnerability has been fixed in…

Vulnerability class: Buffer Overflow

EPSS: 0.022 (80.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Ultravnc — versions 1.2.2.3
Uvnc Ultravnc

Weakness classification (CWE)

CWE-125 — Out-of-bounds Read

References

vulnerability@kaspersky.com (Third Party Advisory, x_refsource_MISC)
vulnerability@kaspersky.com (x_refsource_CONFIRM)
vulnerability@kaspersky.com (x_refsource_MISC)
vulnerability@kaspersky.com (x_refsource_CONFIRM)
vulnerability@kaspersky.com (x_refsource_CONFIRM)
vulnerability@kaspersky.com (x_refsource_MISC)

Frequently asked questions

What is CVE-2019-8261?: CVE-2019-8261 is a critical-severity vulnerability in Ultravnc, classified under Out-of-bounds Read. CVSS score: 9.8/10. Published 2019-03-05.
How severe is CVE-2019-8261?: Critical severity. CVSS v3 base score is 9.8 out of 10.