What is the CVSS score of CVE-2026-66758?

CVE-2026-66758 has a CVSS 3.1 base score of 7.8 (High). CVSS vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.1%.

Is there a patch available for CVE-2026-66758?

Yes, a patch is available for CVE-2026-66758. Update the affected software to the latest version immediately.

Gimp CVE-2026-66758

EUVD-2026-49402 HIGH

Integer Overflow or Wraparound (CWE-190)

2026-07-27 secalert@redhat.com

GHSA-p2xc-g3qc-p2mq

RCE Buffer Overflow Denial Of Service Integer Overflow Red Hat Enterprise Linux Gimp

7.8

CVSS 3.1 · Vendor: redhat

View

Vulnerability Assessment

Weakness

CWE

CWE-190

ASVS 5.0

V15 - Secure Coding and Architecture Integer overflow checks

MITRE ATT&CK

1 technique across 1 tactic: Execution

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).

Patch available 0.1% exploitation probability (EPSS)

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AnalysisAIv1 – Jul 27, 2026

Arbitrary code execution in GIMP when opening a crafted FITS file due to an integer overflow in the file-fits plugin that leads to a heap buffer overflow. An attacker can achieve memory corruption and potentially execute arbitrary code with the user's privileges. No public exploit or active exploitation has been identified at time of analysis.

Affects your stack

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

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

Vendor (redhat) PRIMARY 7.8 HIGH

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

SUSE HIGH

Red Hat 7.8 HIGH

Primary rating from Vendor (redhat).

CVSS VectorVendor: redhat

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

DescriptionCVE.org

A flaw was found in the file-fits plugin in GIMP. When processing a FITS image file, the plugin calculates memory allocation sizes using signed 32-bit integers for width and height. If a crafted file sets both values to large values, their product exceeds 2^31 and overflows, resulting in an undersized heap-based buffer allocation. This integer overflow issue results in a heap-based buffer overflow when cfitsio subsequently writes a full row of pixels in the buffer, causing memory corruption, potentially leading to arbitrary code execution or a denial of service.

Threat Intelligence Overview

EPSS Score

0.1%

Top 96% exploitable

Data Quality

7 sources

Confidence: High

EUVD

NVD

CVE.org

EPSS

Vulnrichment Vendor

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 HIGH

CISA KEV No

Public POC No

EPSS 0.1%

Patch available Yes

Active threat No

Deciding rule

HIGH severity (CVSS 7.0-8.9)

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

None

System Exposure· derived

Small

Automatable

Human Impact· derived

Medium

Technical Impact

Total

Priority Score

Low Medium High Critical

KEV: 0

EPSS: 0

CVSS: +39

PoC: 0

Weaponized: 0

Threat intel: 0

Gov advisory: 0

Attack Technique

Buffer Overflow HIGH

A buffer overflow occurs when a program writes more data to a memory buffer than it was allocated to hold, causing the excess data to spill into adjacent memory regions.

Integer Overflow MEDIUM

Integer overflow occurs when an arithmetic operation produces a result that exceeds the maximum value a given integer type can store.

Remote Code Execution CRITICAL

Remote Code Execution represents the critical moment when an attacker successfully runs arbitrary code on a target system without physical access.

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:gimp:gimp:3.0.8:*:*:*:*:*:*:*

cpe:2.3:a:gimp:gimp:3.2.4:*:*:*:*:*:*:*

cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*

cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*

cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*

cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*

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Same weakness CWE-190 – Integer Overflow or Wraparound

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Vendor StatusVendor

SUSE

Severity: Important

Product	Status
openSUSE Leap 16.0	Fixed
SUSE Linux Enterprise Desktop 15 SP7	Not-Affected
SUSE Linux Enterprise Module for Package Hub 15 SP7	Not-Affected
SUSE Linux Enterprise Server 15 SP7	Not-Affected
SUSE Linux Enterprise Server for SAP Applications 15 SP7	Not-Affected

References

Advisories & patches

ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2026-66758 ADVISORY https://vuldb.com/vuln/383549 REF https://access.redhat.com/errata/RHSA-2026:50817 REF https://access.redhat.com/errata/RHSA-2026:62507 REF https://access.redhat.com/errata/RHSA-2026:73768 REF https://access.redhat.com/errata/RHSA-2026:80509 REF https://access.redhat.com/security/cve/CVE-2026-66758 REF https://bugzilla.redhat.com/show_bug.cgi?id=2507475 REF https://gitlab.gnome.org/GNOME/gimp/-/issues/16528

Search Externally

GitHub PoC

Exploit-DB PacketStorm Snyk Rapid7 Nuclei Templates Trickest PoC

Back

SUSE Linux Enterprise Workstation Extension 15 SP7	Not-Affected
SUSE Linux Enterprise Server 15 SP4	Not-Affected
SUSE Linux Enterprise Server 15 SP5	Not-Affected
SUSE Linux Enterprise Server 15 SP6	Not-Affected
SUSE Linux Enterprise Server for SAP Applications 15 SP6	Not-Affected
SUSE Linux Enterprise Desktop 15 SP4	Not-Affected
SUSE Linux Enterprise Desktop 15 SP5	Not-Affected
SUSE Linux Enterprise Desktop 15 SP6	Not-Affected
SUSE Linux Enterprise Module for Package Hub 15 SP4	Not-Affected
SUSE Linux Enterprise Module for Package Hub 15 SP5	Not-Affected
SUSE Linux Enterprise Module for Package Hub 15 SP6	Not-Affected
SUSE Linux Enterprise Server for SAP Applications 15 SP4	Not-Affected
SUSE Linux Enterprise Server for SAP Applications 15 SP5	Not-Affected
SUSE Linux Enterprise Workstation Extension 15 SP4	Not-Affected
SUSE Linux Enterprise Workstation Extension 15 SP5	Not-Affected
SUSE Linux Enterprise Workstation Extension 15 SP6	Not-Affected
openSUSE Leap 15.4	Not-Affected
openSUSE Leap 15.5	Not-Affected
openSUSE Leap 15.6	Not-Affected