Is CVE-2019-15683 in the CISA KEV catalog?

No. CVE-2019-15683 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2019-15683?

CVE-2019-15683 has a CVSS v3 base score of 9.8 (CRITICAL).

What is the EPSS score for CVE-2019-15683?

CVE-2019-15683 has an EPSS score of 19.39% (97th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2019-15683?

Upgrade turbovnc to 2.2.3 or later.

CVE & CISA-KEV Catalog

CVE-2019-15683

CRITICALEPSS 97th pctl

9.8

CVSS v3

NVD

Description

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.

CWE-121Stack-based Buffer Overflow CWE-787Out-of-bounds Write

How to fix

Remediation Available

turbovncNVD

Affected:< 2.2.3Fixed in:2.2.3CVE-2019-15683derived from NVD

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploit Intelligence

19.39%probability of exploitation in 30 days

97thpercentile

Very high risk: more likely to be exploited than 97% of all known CVEs.

References

Patch1

github.com

Related Vulnerabilities

Other CWE-121 (Stack-based Buffer Overflow) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2025-22457	Critical	9.0	100%	KEV + Ransom	Fix
CVE-2025-0282	Critical	9.0	100%	KEV + Ransom	-
CVE-2021-20038	Critical	9.8	100%	KEV + Ransom	-
CVE-2009-0927	High	8.8	97%	KEV	Fix
CVE-2020-10924	High	8.8	87%	-	-
CVE-2022-20705	Critical	10.0	80%	-	-

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.