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.

Related CVEs

CVE-2019-15691

Key Information

GHSA ID

GHSA-vmc8-ggh9-8p8j

Published

May 24, 2022 5:05 PM

Last Modified

November 10, 2022 12:01 PM

CVSS Score

7.5 /10

Primary Ecosystem

Unknown

Primary Package

Unknown

GitHub Reviewed

✗ No

Dataset

Last updated: July 3, 2025 6:26 AM

Data from GitHub Advisory Database. This information is provided for research and educational purposes.