CVE-2025-6516

highpriority · track · 31EPSS 0.004 · 32 %ileDEEUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.39% (32nd) EPSS

CVSS 7.8 · high

Is it mine?

9 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · cert_bund · nvd

EPSS · scored 2026-10-28

A vulnerability has been found in HDF5 up to 1.14.6 and classified as critical. This vulnerability affects the function H5F_addr_decode_len of the file /hdf5/src/H5Fint.c. The manipulation leads to heap-based buffer overflow. An attack has to be approached locally. The exploit has been disclosed to the public and may be used.

cvss

Technical severity, 0–10. One row per scoring source.

7.8

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · low–high · 1.1–7.8

v3.17.8highCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 1.8 · impact 5.9

v2.04.3mediumAV:L/AC:L/Au:S/C:P/I:P/A:Psecondary · cna@vuldb.comexploitability 3.1 · impact 6.4

v3.15.3mediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:Lsecondary · cna@vuldb.comexploitability 1.8 · impact 3.4

v4.04.8mediumCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:Psecondary · ENISA EU

v4.01.9lowCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Xsecondary · cna@vuldb.com

v4.01.1lowCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Xsecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: poc · Automatable: no · Technical Impact: partialcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-787USprimaryCWE-119USCWE-122US

affected products (9)

Products and version ranges known to be affected.

Red Hat Enterprise Linux AI 3.0all versionscert_bundDEcpe:/o:redhat:enterprise_linux:ai_3.0
n/a HDF5≤ 1.14.6enisa_euvdEU
n/a HDF5≤ 1.14.2enisa_euvdEU
n/a HDF5≤ 1.14.0enisa_euvdEU
n/a HDF5≤ 1.14.1enisa_euvdEU
n/a HDF5≤ 1.14.4enisa_euvdEU
n/a HDF5≤ 1.14.5enisa_euvdEU
n/a HDF5≤ 1.14.3enisa_euvdEU
hdfgroup hdf5≤ 1.14.6nvdUScpe:2.3:a:hdfgroup:hdf5:*:*:*:*:*:*:*:*

advisories (1)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2025-2907Red Hat Enterprise Linux AI (HDF5 ): Mehrere Schwachstellen ermöglichen Manipulation von DateienDeutsch2025-12-21csaf · cert_bundDE
Ein lokaler Angreifer kann mehrere Schwachstellen in Red Hat Enterprise Linux AI ausnutzen, um Dateien zu manipulieren, was möglicherweise die Ausführung von beliebigem Code oder einen Denial-of-Service-Zustand ermöglicht.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd cert_bund nvd NVD CVE.org MITRE

published 2025-06-23modified 2026-06-17

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+16138 more

references (16)

External citations — patches, advisories, analysis.

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