How severe is CVE-2020-15529?

CVE-2020-15529 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2020-15529 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (59th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-15529?

CVE-2020-15529 affects Gog Galaxy. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-15529?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2020-15529 published?

CVE-2020-15529 was published on 2020-07-05 and last updated on 2026-06-17.

CVE-2020-15529

CVE-2020-15529 is a high-severity vulnerability in Gog Galaxy with a CVSS 3.x base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-667.

Key facts

Severity: High (CVSS 3.x base score 7.8)
CVSS v2: 9.3
EPSS exploit prediction: 1% (59th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-667
Affected product: Gog Galaxy
Published: 2020-07-05
Last modified: 2026-06-17

Description

An issue was discovered in GOG Galaxy Client 2.0.17. Local escalation of privileges is possible when a user installs a game or performs a verify/repair operation. The issue exists because of weak file permissions and can be exploited by using opportunistic locks.

Frequently asked questions

What is CVE-2020-15529?: An issue was discovered in GOG Galaxy Client 2.0.17. Local escalation of privileges is possible when a user installs a game or performs a verify/repair operation. The issue exists because of weak file permissions and can be exploited by using opportunistic locks.
How severe is CVE-2020-15529?: CVE-2020-15529 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2020-15529 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (59th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-15529?: CVE-2020-15529 affects Gog Galaxy. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-15529?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2020-15529 published?: CVE-2020-15529 was published on 2020-07-05 and last updated on 2026-06-17.

References

http://daniels-it-blog.blogspot.com/2020/07/gog-galaxy-escalation-of-privileges.html

Affected products (1)

cpe:2.3:a:gog:galaxy:2.0.17:*:*:*:*:windows:*:*

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