What is CVE-2019-15683?

CVE-2019-15683 is a critical-severity vulnerability in Kaspersky Turbovnc, classified under Stack-based Buffer Overflow. CVSS score: 9.8/10. Published 2019-10-29.

How severe is CVE-2019-15683?

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

Buffer overflow in Kaspersky Turbovnc

CVE-2019-15683

TurboVNC server code contains stack buffer overflow vulnerability in commit prior to cea98166008301e614e0d36776bf9435a536136e. This could possibly result into remote code execution, since stack frame is not protected with stack canary. This attack appear to be exploitable via network connectivity. To exploit this vulnerability authorization on server is required. These issues have been fixed in commit cea98166008301e614e0d36776bf9435a536136e.

Vulnerability class: Buffer Overflow

Published 2019-10-29 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.194 (97.3th percentile), scored 2026-09-29.

Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 97th percentile — 97.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.194 · newest: 0.194 · change: 0.000

Affected products

Kaspersky Turbovnc — versions commit prior to cea98166008301e614e0d36776bf9435a536136e
Turbovnc

Weakness classification (CWE)

References

github.com/TurboVNC/turbovnc/commit/cea98166008301e614e0d36776bf9435a536136e (Patch, Third Party Advisory)

Frequently asked questions

What is CVE-2019-15683?: CVE-2019-15683 is a critical-severity vulnerability in Kaspersky Turbovnc, classified under Stack-based Buffer Overflow. CVSS score: 9.8/10. Published 2019-10-29.
How severe is CVE-2019-15683?: Critical severity. CVSS v3 base score is 9.8 out of 10.