CVE-2025-47771

HIGHNVD 8.18.1—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.1 under NVD CVSS v3. EPSS exploit probability: 0.4%, top 65% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
8.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 8.1Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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).

CVSS v3
8.1
EG Score
8.1(medium)
EG Risk
52(Track)
EG Risk 52/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity81% × 45%
Exploitation0% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
43%
KEV
Not listed

Published

June 20, 2025

Last Modified

April 15, 2026

Advisory Details (3)

Auto-updated Sep 18, 2026
Patch available. Sources: github_commit, github_release, github.
github Patch Available

Deserialization of untrusted SparseMatrix data in PowSyBl Core · Advisory · powsybl/powsybl-core · GitHub

https://github.com/powsybl/powsybl-core/security/advisories/GHSA-f5cx-h789-j959
github_release Patch Available

v6.7.2

Patch available: powsybl/powsybl-core v6.7.2

https://github.com/powsybl/powsybl-core/releases/tag/v6.7.2
github_commit Patch Available

commit 8ed16ce41683 (powsybl/powsybl-core)

Patch available: powsybl/powsybl-core v6.8.0-RC2 (contains commit 8ed16ce41683)

https://github.com/powsybl/powsybl-core/commit/8ed16ce41683c4aef5f6aa1dd5ae8642aa5ed2bd

Affected Packages

(1 across 1 ecosystem)
Maven(1)
PackageVulnerable rangeFixed inDependents
com.powsybl:powsybl-math6.3.0 ... 6.7.1 (15 versions)6.7.2—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 7× in last 7d / 30× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 190 total refreshes for this CVE.

  1. 2026-09-20 20:15 UTCEPSS rescore
  2. 2026-09-20 20:15 UTCEPSS rescore
  3. 2026-09-18 19:27 UTCEPSS rescore
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  1. 2026-08-26 14:45 UTCEPSS rescore
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  28. 2026-08-01 00:12 UTCOSV refresh
  29. 2026-07-30 16:27 UTCEPSS rescore
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  38. 2026-07-23 02:57 UTCEG score recompute
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  52. 2026-07-14 07:25 UTCOSV refresh
  53. 2026-07-13 22:29 UTCEPSS rescore
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  71. 2026-06-30 23:22 UTCEPSS rescore
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  73. 2026-06-29 14:06 UTCEPSS rescore
  74. 2026-06-29 14:06 UTCEPSS rescore
  75. 2026-06-28 14:07 UTCEPSS rescore

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2025-47771?
CVE-2025-47771 is a high vulnerability published on June 20, 2025. 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…
When was CVE-2025-47771 disclosed?
CVE-2025-47771 was first published in the National Vulnerability Database on June 20, 2025, with the most recent update on April 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2025-47771 actively exploited?
CVE-2025-47771 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 57.2% of all scored CVEs.
What is the CVSS score of CVE-2025-47771?
CVE-2025-47771 has a CVSS v3 base score of 8.1 (NVD).
How do I remediate CVE-2025-47771?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-47771, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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