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GdalApplication · Osgeo

CVE-2026-8086

HIGH · 7.8 CVSS v3.1 Published 2026-05-07
Fix available
A fix is available. Upgrade to after 3.12.4 or later.
See remediation →
80/100
Remediation priority · High
Public exploit Zero-click Patch available

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
A vulnerability was identified in OSGeo gdal up to 3.13.0dev-4. This issue affects the function SWnentries of the file frmts/hdf4/hdf-eos/SWapi.c. Such manipulation of the argument DimensionName leads to heap-based buffer overflow. The attack must be carried out locally. The exploit is publicly available and might be used. Upgrading to version 3.12.4RC1 is capable of addressing this issue. The name of the patch is 9491e794f1757f08063ea2f7a274ad2994afa636. It is advisable to upgrade the affected component.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis
How this class of weakness works · CWE-119

The program reads or writes outside the bounds of an allocated buffer, corrupting adjacent memory. With crafted input an attacker can overwrite control data and, with effort, redirect execution to their own code. Remediation ranges from bounds checking and safe library functions to compiler mitigations, usually alongside a careful audit of the surrounding code.

General guidance for the memory buffer bounds error class — the official description and references above are authoritative for this specific CVE. Want a bespoke review and a reviewed fix? Ask our team →

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
GdalApplication
Affected:<= 3.12.4= 3.13.0

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Upgrade available Upgrade to a release after 3.12.4
Vendor patch github.com →
Recommended fix High confidence

GDAL 3.12.5 or later (or any version including and after commit 9491e794f1757f08063ea2f7a274ad2994afa636)

  1. 1. Identify the current GDAL version installed using: gdalinfo --version or python -c "import GDAL; print(GDAL.VersionInfo())"
  2. 2. Download or obtain GDAL version 3.12.5 or later (the first version containing the fix from commit 9491e794f1757f08063ea2f7a274ad2994afa636)
  3. 3. For source compilation: clone the GDAL repository and checkout the commit 9491e794f1757f08063ea2f7a274ad2994afa636, or download the 3.12.5+ release
  4. 4. Rebuild and reinstall GDAL following standard build procedures for your platform
  5. 5. Verify the fix by confirming the patched SWnentries function in frmts/hdf4/hdf-eos/SWapi.c no longer allows heap overflow via the DimensionName argument
  6. 6. Test any HDF4-based workflows to ensure functionality is maintained
Caveat Minor - this is a security fix for a specific heap overflow in HDF4/EOS handling; ensure any custom HDF4 processing code is compatible

Generated from the published advisory — verify against the referenced sources before acting.

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2026-8086 in production — separate from our analysis above.

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