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
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.025 (83.9th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 84th percentile — 83.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.025 · newest: 0.025 · change: 0.000
Affected products
Weakness classification (CWE)
References
- ics-cert.kaspersky.com/advisories/klcert-advisories/2019/03/01/klcert-19-009-ul… (Third Party Advisory, Not Applicable)
- ics-cert.kaspersky.com/advisories/klcert-advisories/2019/03/01/klcert-19-010-ul… (Third Party Advisory)
- cert-portal.siemens.com/productcert/pdf/ssa-927095.pdf (Third Party Advisory)
- www.us-cert.gov/ics/advisories/icsa-20-161-06 (US Government Resource, Third Party Advisory)
- cert-portal.siemens.com/productcert/pdf/ssa-940818.pdf
- cert-portal.siemens.com/productcert/pdf/ssa-286838.pdf
- us-cert.cisa.gov/ics/advisories/icsa-21-131-11
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.