CVE-2019-15511

Name: CVE-2019-15511
Creator: NVD / NIST
Published: 2019-11-21T18:15:11.04+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 0.75%

Last modified Jun 17, 2026

CVE-2019-15511 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. An exploitable local privilege escalation vulnerability exists in the GalaxyClientService installed by GOG Galaxy. Due to Improper Access Control, an attacker can send unauthenticated local TCP packets to the service to gain SYSTEM privileges in Windows system where GOG Galaxy software is installed. EPSS estimates a 0.75% chance of exploitation in the next 30 days.

Description

An exploitable local privilege escalation vulnerability exists in the GalaxyClientService installed by GOG Galaxy. Due to Improper Access Control, an attacker can send unauthenticated local TCP packets to the service to gain SYSTEM privileges in Windows system where GOG Galaxy software is installed. All GOG Galaxy versions before 1.2.60 and all corresponding versions of GOG Galaxy 2.0 Beta are affected.

Metrics

CVSS 3.1

7.8/10

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

EPSS Probability

0.75%

50.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-306

Affected Software

Vendor	Product	Versions
Gog	Galaxy	< 1.2.60
Gog	Galaxy	>= 2.0.0, <= 2.0.8

References

https://cqureacademy.com/cqure-labs/cqlabs-cve-2019-15511-broken-access-control-in-gog-galaxyThird Party Advisory, Vendor Advisory
https://support.gog.com/hc/en-us/articles/360025458833-GOG-GALAXY-2-0-updates-and-known-issuesRelease Notes, Vendor Advisory
https://cqureacademy.com/cqure-labs/cqlabs-cve-2019-15511-broken-access-control-in-gog-galaxyThird Party Advisory, Vendor Advisory
https://support.gog.com/hc/en-us/articles/360025458833-GOG-GALAXY-2-0-updates-and-known-issuesRelease Notes, Vendor Advisory

Timeline

Published: Nov 21, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-15511?

How severe is CVE-2019-15511?

CVE-2019-15511 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.75% probability of exploitation in the next 30 days.

How do I fix CVE-2019-15511?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-15511?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST