Is CVE-2019-15691 in the CISA KEV catalog?

No. CVE-2019-15691 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2019-15691?

CVE-2019-15691 has a CVSS v3 base score of 7.2 (HIGH).

What is the EPSS score for CVE-2019-15691?

CVE-2019-15691 has an EPSS score of 4.72% (91th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2019-15691?

Upgrade tigervnc on debian 11 to 1.10.1+dfsg-1 or later. Fixes are available for 2 affected products.

CVE & CISA-KEV Catalog

CVE-2019-15691

HIGHEPSS 91th pctl

7.2

CVSS v3

NVD

Description

TigerVNC version prior to 1.10.1 is vulnerable to stack use-after-return, which occurs due to incorrect usage of stack memory in ZRLEDecoder. If decoding routine would throw an exception, ZRLEDecoder may try to access stack variable, which has been already freed during the process of stack unwinding. Exploitation of this vulnerability could potentially result into remote code execution. This attack appear to be exploitable via network connectivity.

CWE-825 CWE-672

How to fix

Remediation Available

tigervncDebian

Fixed in:1.10.1+dfsg-1CVE-2019-15691

TigerVNCWindows application

Affected:1.10.1Fixed in:1.10.1TigerVNC project

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 RequiredHigh

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

4.72%probability of exploitation in 30 days

91stpercentile

High risk: more likely to be exploited than 91% of all known CVEs.

References

Patch1

github.com

Exploit1

openwall.com

Third-Party Advisory2

Embed a live status badge for CVE-2019-15691

Markdown

[![CVE-2019-15691](https://tridentstack.com/cve/badge/CVE-2019-15691.svg)](https://tridentstack.com/cve/CVE-2019-15691)

HTML

<a href="https://tridentstack.com/cve/CVE-2019-15691"><img src="https://tridentstack.com/cve/badge/CVE-2019-15691.svg" alt="CVE-2019-15691"></a>

Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

Start free

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.