CVE-2026-59090Public exploitNetwork attack vectorHinoki check available

Code execution via PSD block counter underflow

Published Aug 10, 2026 · Updated Aug 10, 2026

Code execution in GIMP's PSD plug-in on Red Hat Enterprise Linux 7, 8, and 9 allows attackers to run code via a crafted PSD file. The parser underflows the unsigned block_rem counter while processing attacker-controlled layer-resource data, then treats injected bytes as additional resource blocks. A desktop user must open the file in GIMP; successful exploitation executes code in the GIMP process context.

CVSS severity8.4
High
EPSS probability0.60%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Code execution in GIMP's PSD plug-in on Red Hat Enterprise Linux 7, 8, and 9 allows attackers to run code via a crafted PSD file. The parser underflows the unsigned block_rem counter while processing attacker-controlled layer-resource data, then treats injected bytes as additional resource blocks. A desktop user must open the file in GIMP; successful exploitation executes code in the GIMP process context.

The record

CVE
CVE-2026-59090
Published
Aug 10, 2026
Updated
Aug 10, 2026
Vendor
389 Directory Server
Product
Red Hat Enterprise Linux 7
Classifications
CWE-191, T1204.002, T1203
Attack vector
network
Privileges
Unavailable

Timeline

How it unfolded

  1. Aug 10, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 10, 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 vectornetwork
Required privilegesUnavailable in this record.

What is affected?

389 Directory Server · Red Hat Enterprise Linux 7Affected versions are unavailable in this record.
389 Directory Server · Red Hat Enterprise Linux 9Affected versions are unavailable in this record.
389 Directory Server · Red Hat Enterprise Linux 8Affected versions are unavailable in this record.

Published CVSS scores

8.4Red HatCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:H/A:H
9.9NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/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)
Vectornetwork
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-191Integer Underflow (Wrap or Wraparound)
T1204.002Malicious File
T1203Exploitation for Client Execution

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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