How severe is CVE-2025-27997?

CVE-2025-27997 has a CVSS 3.x base score of 8.4, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2025-27997 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (5th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-27997?

CVE-2025-27997 affects Blizzard Battle.net. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-27997?

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.

Does CVE-2025-27997 have an EU (EUVD) identifier?

Yes. CVE-2025-27997 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-16024.

When was CVE-2025-27997 published?

CVE-2025-27997 was published on 2025-05-21 and last updated on 2026-06-17.

CVE-2025-27997

CVE-2025-27997 is a high-severity vulnerability in Blizzard Battle.net with a CVSS 3.x base score of 8.4. 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-427.

Key facts

Severity: High (CVSS 3.x base score 8.4)
EPSS exploit prediction: 0% (5th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-16024
Weakness: CWE-427
Affected product: Blizzard Battle.net
Published: 2025-05-21
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is 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.
How severe is CVE-2025-27997?: CVE-2025-27997 has a CVSS 3.x base score of 8.4, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2025-27997 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (5th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-27997?: CVE-2025-27997 affects Blizzard Battle.net. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-27997?: 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.
Does CVE-2025-27997 have an EU (EUVD) identifier?: Yes. CVE-2025-27997 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-16024.
When was CVE-2025-27997 published?: CVE-2025-27997 was published on 2025-05-21 and last updated on 2026-06-17.

References

https://gist.github.com/sornram9254/4593dd5eb2bcca50d68dc6ac70e40b24

Affected products (1)

cpe:2.3:a:blizzard:battle.net:2.40.0.15267:*:*:*:*:*:*:*

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