Critical severity9.8NVD Advisory· Published Mar 5, 2019· Updated Jun 17, 2026

CVE-2019-8261

Description

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 revision 1200.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

Uvnc/Ultravnc
cpe:2.3:a:uvnc:ultravnc:*:*:*:*:*:*:*:*
Range: <1.2.2.3
Ultravnc/Ultravncllm-fuzzy2 versions
revision < 1200+ 1 more
- (no CPE)range: revision < 1200
- (no CPE)range: 1.2.2.3

Patches

Vulnerability mechanics

References

ics-cert.kaspersky.com/advisories/klcert-advisories/2019/03/01/klcert-19-007-ultravnc-out-of-bound-read/nvdThird Party Advisory
cert-portal.siemens.com/productcert/pdf/ssa-286838.pdfnvd
cert-portal.siemens.com/productcert/pdf/ssa-927095.pdfnvd
cert-portal.siemens.com/productcert/pdf/ssa-940818.pdfnvd
us-cert.cisa.gov/ics/advisories/icsa-21-131-11nvd
www.us-cert.gov/ics/advisories/icsa-20-161-06nvd

News mentions

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cvss	0.637
epss	0.002
exploit	0.000
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ransomware	0.000