CVE-2025-47771

PowSyBl Core allows deserialization of untrusted SparseMatrix data

HIGH
8.1
CVSS Score
Published: June 19, 2025 at 11:41 PM UTC
Updated: June 17, 2026 at 09:28 AM UTC
1 product affected across 1 vendorPowSyBl Core

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Severity
HIGH8.1
Exploit prediction
EPSS 0.5%
SSVC
No known exploit

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).

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 6.7.2
Affected range stops below 6.7.2, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.1HIGHGitHub_M
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-502

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