TI-2019-05942 Aliases CVE-2019-8270 GHSA-f4q5-97fh-j49q

Out-of-bounds read in Kaspersky Lab UltraVNC

LOW 37CWE-125Published 2019-03-09 · Updated 2024-09-16

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Denial of service
Confidentiality · integrity · availability: None · None · High
Fix status: No fix listed

Attack profile from CVSS 3.0 · NVD. Fix status from CNA. Impact type from CWE-125 and the CVSS impact.

Summary

UltraVNC revision 1210 has out-of-bounds read vulnerability in VNC client code inside Ultra decoder, which results in a denial of service (DoS) condition. This attack appear to be exploitable via network connectivity. This vulnerability has been fixed in revision 1211.

Why it matters now

EPSS 0.01947 80th percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Kaspersky Lab	UltraVNC	1.2.2.3	—	No fix listed	CNA

UltraVNC VendorKaspersky Lab Affected 1.2.2.3 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:uvnc:ultravnc::::::::	before 1.2.2.3	Vulnerable	uvnc

cpe:2.3:a:uvnc:ultravnc:*:*:*:*:*:*:*:* Versions before 1.2.2.3 Vulnerable ·uvnc

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2019-8270
2026-10-03 Alias added: GHSA-f4q5-97fh-j49q

References

Advisory 1

https://ics-cert.kaspersky.com/advisories/klcert-advisories/2019/03/01/klcert-19-017-ultravnc-out-of-bounds-read/

Other 2

TI-2005-02970 Heap-based buffer overflow in Kaspersky Antivirus (KAV) 5.0 and Kaspersky Personal… CVSS 2.0HIGH 10.0
TI-2004-00844 McAfee Anti-Virus Engine DATS drivers before 4398 released on Oct 13th 2004 and DATS… CVSS 2.0HIGH 7.5
TI-2007-00432 Heap-based buffer overflow in the arj.ppl module in the OnDemand Scanner in Kaspersky… CVSS 2.0HIGH 10.0
TI-2019-05946 Heap-based buffer overflow in Kaspersky Lab UltraVNC CVSS 3.1CRITICAL 9.8
TI-2019-05945 Heap-based buffer overflow in Kaspersky Lab UltraVNC CVSS 3.1CRITICAL 9.8
TI-2019-05943 Heap-based buffer overflow in Kaspersky Lab UltraVNC CVSS 3.1CRITICAL 9.8

See all 74 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences