CVE-2025-47771
CVE-2025-47771 is a high-severity vulnerability with a CVSS 4.0 base score of 8.1. 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-502.
Key facts
- Severity: High (CVSS 4.0 base score 8.1)
- EPSS exploit prediction: 0% (35th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2025-18706
- Weakness: CWE-502
- Published:
- Last modified:
Description
PowSyBl (Power System Blocks) is a framework to build power system oriented software. In versions 6.3.0 to 6.7.1, there is a deserialization issue in the read method of the SparseMatrix class that can lead to a wide range of privilege escalations depending on the circumstances. This method takes in an InputStream and returns a SparseMatrix object. This issue has been patched in com.powsybl:powsybl-math: 6.7.2. A workaround for this issue involves not using SparseMatrix deserialization (SparseMatrix.read(...) methods).
Frequently asked questions
- What is CVE-2025-47771?
- PowSyBl (Power System Blocks) is a framework to build power system oriented software. In versions 6.3.0 to 6.7.1, there is a deserialization issue in the read method of the SparseMatrix class that can lead to a wide range of privilege escalations depending on the circumstances. This method takes in an InputStream and returns a SparseMatrix object. This issue has been patched in com.powsybl:powsybl-math: 6.7.2. A workaround for this issue involves not using SparseMatrix deserialization (SparseMatrix.read(...) methods).
- How severe is CVE-2025-47771?
- CVE-2025-47771 has a CVSS 4.0 base score of 8.1, rated high severity.
- Is CVE-2025-47771 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (35th percentile), an estimate of the probability of exploitation in the next 30 days.
- How do I fix CVE-2025-47771?
- 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-2025-47771 have an EU (EUVD) identifier?
- Yes. CVE-2025-47771 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-18706.
- When was CVE-2025-47771 published?
- CVE-2025-47771 was published on 2025-06-20 and last updated on 2026-06-17.
References
- https://github.com/powsybl/powsybl-core/commit/8ed16ce41683c4aef5f6aa1dd5ae8642aa5ed2bd
- https://github.com/powsybl/powsybl-core/releases/tag/v6.7.2
- https://github.com/powsybl/powsybl-core/security/advisories/GHSA-f5cx-h789-j959
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