How severe is CVE-2020-15528?

CVE-2020-15528 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-2020-15528 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (68th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-15528?

CVE-2020-15528 affects Gog Galaxy. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-15528?

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-2020-15528 published?

CVE-2020-15528 was published on 2020-07-05 and last updated on 2026-06-17.

CVE-2020-15528

CVE-2020-15528 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-732.

Key facts

Severity: High (CVSS 3.x base score 7.8)
CVSS v2: 9.3
EPSS exploit prediction: 1% (68th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-732
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 starts or uninstalls a game because of weak file permissions and missing file integrity checks.

Frequently asked questions

What is CVE-2020-15528?: An issue was discovered in GOG Galaxy Client 2.0.17. Local escalation of privileges is possible when a user starts or uninstalls a game because of weak file permissions and missing file integrity checks.
How severe is CVE-2020-15528?: CVE-2020-15528 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-2020-15528 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (68th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-15528?: CVE-2020-15528 affects Gog Galaxy. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-15528?: 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-2020-15528 published?: CVE-2020-15528 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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