CVE-2026-42170Hinoki check available

Code execution via undersized DDS pixel buffer

Published Aug 8, 2026 · Updated Aug 8, 2026

Heap-based buffer overflow in GIMP on Red Hat Enterprise Linux 6, 7, and 8 allows attackers to execute code via a crafted DDS file. The DDS load_layer() path in ddsread.c allocates from the header bpp value but consumes D3D9 pixels at the format-derived stride, writing beyond the heap buffer. Exploitation requires GIMP to be installed and a user to open an untrusted DDS file; successful corruption runs code in that user context or crashes GIMP.

CVSS severity7.8
High
EPSS probability0.16%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Heap-based buffer overflow in GIMP on Red Hat Enterprise Linux 6, 7, and 8 allows attackers to execute code via a crafted DDS file. The DDS load_layer() path in ddsread.c allocates from the header bpp value but consumes D3D9 pixels at the format-derived stride, writing beyond the heap buffer. Exploitation requires GIMP to be installed and a user to open an untrusted DDS file; successful corruption runs code in that user context or crashes GIMP.

The record

CVE
CVE-2026-42170
Published
Aug 8, 2026
Updated
Aug 8, 2026
Vendor
389 Directory Server
Product
Red Hat Enterprise Linux 6
Classifications
CWE-131, T1204.002
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 8, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 8, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected versions are unavailable in this record. Check the vendor advisory for version and patch details.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

389 Directory Server · Red Hat Enterprise Linux 6Affected versions are unavailable in this record.
389 Directory Server · Red Hat Enterprise Linux 7Affected versions are unavailable in this record.
389 Directory Server · Red Hat Enterprise Linux 8Affected versions are unavailable in this record.

Published CVSS scores

7.8Red HatCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-131Incorrect Calculation of Buffer Size
T1204.002User Execution: Malicious File

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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