What is the CVSS score of CVE-2025-2926?

CVE-2025-2926 has a CVSS 4.0 base score of 1.9 (Low). CVSS vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P. EPSS exploitation probability: 0.1%.

Is there a public PoC exploit available for CVE-2025-2926?

Yes, a public proof-of-concept exploit is available for CVE-2025-2926. Prioritise patching immediately. EPSS: 0.1%.

How to fix or mitigate CVE-2025-2926?

Within 30 days: Identify affected systems running HDF5 and apply vendor patches as part of regular patch cycle. Monitor vendor channels for patch availability.

Hdf5 CVE-2025-2926

LOW

Improper Resource Shutdown or Release (CWE-404)

2025-03-28 cna@vuldb.com

Denial Of Service Hdf5 Hdfgroup

1.9

CVSS 4.0 · NVD

View

Vulnerability Assessment

Weakness	CWE CWE-404 OWASP Top 10:2025 A05:2021 - Security Misconfiguration ASVS 5.0 V15 - Secure Coding and Architecture Resource release
Impact	CVSS score of 4.8 (MEDIUM). Attack characteristics: local attack vector, low complexity, low privileges required, no user interaction not required. Public proof-of-concept exploit code is available. EPSS exploitation probability: 0.08%.
Exploit ScenarioDerived	Successful exploitation could compromise the medium-severity affected system.

Monitor Track and reassess. Why: LOW severity (CVSS 0.1-3.9).

Patch available 0.1% exploitation probability (EPSS)

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AnalysisAIv1 – Mar 28, 2026

A vulnerability was found in HDF5 up to 1.14.6 and classified as problematic.c. Rated medium severity (CVSS 4.8), this vulnerability is low attack complexity. Public exploit code available and no vendor patch available.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

Affects your stack

Find out whether the stacks and servers you run are on an affected version.

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

This vulnerability is classified under CWE-404. A vulnerability was found in HDF5 up to 1.14.6 and classified as problematic.c. The manipulation leads to null pointer dereference. An attack has to be approached locally. The exploit has been disclosed to the public and may be used. Affected products include: Hdfgroup Hdf5. Version information: up to 1.14.6.

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 1.9 LOW

CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P

SUSE 1.7 LOW

AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

Red Hat 3.3 LOW

Primary rating from NVD.

CVSS VectorNVD

Attack Vector

Local

Attack Complexity

Low

Attack Requirements

None

Privileges Required

Low

User Interaction

None

Vulnerable system: Confidentiality

None

Vulnerable system: Integrity

None

Vulnerable system: Availability

Low

Subsequent system: Confidentiality

None

Subsequent system: Integrity

None

Subsequent system: Availability

None

Lifecycle Timeline

Severity Changed

Apr 29, 2026 - 01:11 NVD

MEDIUM LOW

CVSS changed

Apr 29, 2026 - 01:11 NVD

4.8 (MEDIUM) 1.9 (LOW)

Patch released

Apr 05, 2026 - 20:30 nvd

Patch available

PoC Detected

Jul 24, 2025 - 10:15 vuln.today

Public exploit code

CVE Published

Mar 28, 2025 - 20:15 nvd

MEDIUM 4.8

DescriptionCVE.org

A vulnerability was found in HDF5 up to 1.14.6 and classified as problematic. This issue affects the function H5O__cache_chk_serialize of the file src/H5Ocache.c. The manipulation leads to null pointer dereference. An attack has to be approached locally. The exploit has been disclosed to the public and may be used.

Executive ViewAI

Why It Matters

Organizations using HDF5 should be aware of moderate risk from CVE-2025-2926 rated CVSS 4.8. Exploitation could compromise the security of affected deployments. Proof-of-concept code is publicly available. Organizations should apply vendor updates when available and monitor for exploitation.

Business Impact: Low

Compensating Controls

Apply vendor patch. If patching is delayed: restrict network access and enable monitoring.

Threat Intelligence Overview

EPSS Score

0.1%

Top 75% exploitable

Exploit

POC

Public exploit code exists

Data Quality

6 sources

Confidence: High

NVD

CVE.org

EPSS Vendor

GitHub

VulDB

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue

Severity LOW

CISA KEV No

Public POC Yes

EPSS 0.1%

Patch available Yes

Active threat No

Deciding rule

LOW severity (CVSS 0.1-3.9)

What every action level means

Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.

Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.

This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.

This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.

Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived

Defer

Exploitation· derived

Poc

System Exposure· derived

Small

Automatable· derived

Human Impact

Low

Priority Score

Low Medium High Critical

KEV: 0

EPSS: 0

CVSS: +10

PoC: +20

Weaponized: 0

Threat intel: 0

Gov advisory: 0

Attack Technique

Denial of Service MEDIUM

Denial of Service attacks render applications or systems unavailable by overwhelming resources or triggering failure conditions.

Affected Products (CPE)CVE.org

cpe:2.3:a:hdfgroup:hdf5:*:*:*:*:*:*:*:*