What is CVE-2025-27997?

CVE-2025-27997 is a high-severity vulnerability in Blizzard Battle.net, classified under Uncontrolled Search Path Element. CVSS score: 8.4/10. Published 2025-05-21.

How severe is CVE-2025-27997?

High severity. CVSS v3 base score is 8.4 out of 10.

Is CVE-2025-27997 known to be exploited?

3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Blizzard Battle.net

CVE-2025-27997

An issue in Blizzard Battle.net v2.40.0.15267 allows attackers to escalate privileges via placing a crafted shell script or executable into the C:\ProgramData directory.

EPSS: 0.002 (4.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.4 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Blizzard Battle.net — versions 2.40.0.15267
N/a — versions n/a

Weakness classification (CWE)

CWE-427 — Uncontrolled Search Path Element

Public proof-of-concept exploits

References

cve@mitre.org (Third Party Advisory)

Frequently asked questions

What is CVE-2025-27997?: CVE-2025-27997 is a high-severity vulnerability in Blizzard Battle.net, classified under Uncontrolled Search Path Element. CVSS score: 8.4/10. Published 2025-05-21.
How severe is CVE-2025-27997?: High severity. CVSS v3 base score is 8.4 out of 10.
Is CVE-2025-27997 known to be exploited?: 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.