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HIGH

CVE-2019-15693

CVSS v3

7.2

HIGH

EPSS Score

4.3 %

exploit probability, as of 2026-10-19

CISA KEV

No

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Vendor advisories

  • CVE-2019-15693 Red Hat Product Security222 products fixed · 5 known affected

    tigervnc: Heap buffer overflow in TightDecoder::FilterGradient

    tigervnc as a component of Red Hat Enterprise Linux 6 · tigervnc-server as a component of Red Hat Enterprise Linux 6 · tigervnc-server-applet as a component of Red Hat Enterprise Linux 6

  • RHSA-2020:3875 Red Hat Product Security56 products fixed

    Red Hat Security Advisory: tigervnc security and bug fix update

  • RHSA-2020:1497 Red Hat Product Security38 products fixed

    Red Hat Security Advisory: tigervnc security update

Full record on NVD

Description

TigerVNC version prior to 1.10.1 is vulnerable to heap buffer overflow, which occurs in TightDecoder::FilterGradient. Exploitation of this vulnerability could potentially result into remote code execution. This attack appear to be exploitable via network connectivity.

Technical details

Published
2019-12-26

Frequently asked questions

What is CVE-2019-15693?

TigerVNC version prior to 1.10.1 is vulnerable to heap buffer overflow, which occurs in TightDecoder::FilterGradient. Exploitation of this vulnerability could potentially result into remote code execution. This attack appear to be exploitable via network connectivity.

Is CVE-2019-15693 actively exploited?

Active exploitation of CVE-2019-15693 has not been confirmed. Its EPSS score was 4.3% on 2026-10-19, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2019-15693?

CVE-2019-15693 has a CVSS v3 base score of 7.2 (HIGH severity).

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