CVE-2019-15691

HighCVSS 7.2/10Last modified Jun 17, 2026

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.

Metrics

CVSS 3.1 7.2/10CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-825 CWE-672

Affected software

No affected versions have been published.

Timeline

Published: Dec 26, 2019
Last modified: Jun 17, 2026
NVD status: Modified

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