CVE-2026-66758

Gimp: integer overflow in file-fits plugin causes a heap-based buffer overflow on crafted fits images

Products / packages GNOME GIMP · Red Hat Enterprise Linux 8 · Red Hat Enterprise Linux 9 · 5 more

Published 27/07/2026, 19:07:12 UTC

Severity and exploitation

Not in CISA KEV

KEV coverage does not rule out exploitation.

KEV checked 05/11/2026, 06:00:33 UTC

redhat · CVSS:3.1 · 7.8

Assessment vector

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

Severity

high7.8

CVSS measures technical severity, not the likelihood of an attack.

Known exploitation

Not listed in the checked CISA KEV catalog

Absence from CISA KEV does not rule out attacks.

Public exploit

Not established by this record

Missing evidence does not mean no public exploit exists.

Remediation

Source guidance available

Review the recorded instructions. Guidance may be a workaround rather than a fixed version.

What this means

GIMP's file-fits plugin has an integer overflow weakness, potentially causing a heap-based buffer overflow when processing crafted FITS images. The vulnerability may lead to memory corruption. Affected versions are not specified.

Summarized by @cf/meta/llama-3.3-70b-instruct-fp8-fast. Verify details against the original sources.

Attack conditions

No attack-condition excerpt has been identified here. Review the full source description and references for authentication, network access, and configuration requirements.

Review supporting sources →

Affected versions

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GNOME · redhat

GIMP

0 ranges

redhat version evidence

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Other versions: affected

Red Hat · redhat

Red Hat Enterprise Linux 8

1 range

redhat version evidence

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unaffected

8100020260824165450.4c9c024f → before *

rpm versions

Other versions: affected

Product identifiers (CPE)

cpe:/a:redhat:enterprise_linux:8::appstream

Red Hat · redhat

Red Hat Enterprise Linux 9

1 range

redhat version evidence

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unaffected

2:3.0.4-4.el9_8.9 → before *

rpm versions

Other versions: affected

Product identifiers (CPE)

cpe:/a:redhat:enterprise_linux:9::appstream

Red Hat · redhat

Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions

1 range

redhat version evidence

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unaffected

2:2.99.8-4.el9_2.7 → before *

rpm versions

Other versions: affected

Product identifiers (CPE)

cpe:/a:redhat:rhel_e4s:9.2::appstream

Red Hat · redhat

Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions

1 range

redhat version evidence

Check a product version

Compare with this publisher’s ranges. This does not inspect your installation.

unaffected

2:2.99.8-4.el9_4.19 → before *

rpm versions

Other versions: affected

Product identifiers (CPE)

cpe:/a:redhat:rhel_e4s:9.4::appstream

Red Hat · redhat

Red Hat Enterprise Linux 9.6 Extended Update Support

1 range

redhat version evidence

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unaffected

2:2.99.8-4.el9_6.20 → before *

rpm versions

Other versions: affected

Product identifiers (CPE)

cpe:/a:redhat:rhel_eus:9.6::appstream

Red Hat · redhat

Red Hat Enterprise Linux 6

0 ranges

redhat version evidence

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Other versions: affected

Product identifiers (CPE)

cpe:/o:redhat:rhel_els:6

Red Hat · redhat

Red Hat Enterprise Linux 7

0 ranges

redhat version evidence

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Other versions: affected

Product identifiers (CPE)

cpe:/o:redhat:rhel_els:7

Automatic dependency matching is unavailable for this record. Use the product evidence and publisher’s instructions to check your installation.

What to do

Compare your installed product and version with the affected versions above. A matching product name alone does not confirm exposure.

To mitigate this vulnerability, do not open FITS files from untrusted sources with GIMP.

redhat guidance ↗

cve.new guidance unless attributed to a publisher. This page does not inspect your installation.

Public exploit evidence

No public exploit reference is identified in the imported evidence. This is not a claim that no exploit exists.

Original source description

Read the full publisher description

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.

References

8 sources

access.redhat.com/errata/RHSA-2026:50817

Vendor advisoryredhat

access.redhat.com/errata/RHSA-2026:62507

Vendor advisoryredhat

access.redhat.com/errata/RHSA-2026:73768

Vendor advisoryredhat

access.redhat.com/errata/RHSA-2026:80509

Vendor advisoryredhat

access.redhat.com/errata/RHSA-2026:93589

Vendor advisoryredhat

access.redhat.com/security/cve/CVE-2026-66758

Security advisoryredhat

View 2 more references

bugzilla.redhat.com/show_bug.cgi

Source referenceredhat

gitlab.gnome.org/GNOME/gimp/-/issues/16528

Source referenceredhat

Inside the record

Evidence available

Package identity · not supplied

Version evidence

Remediation guidance

Weakness classification

Additional publishers

Describes the evidence in this view, not whether the product is safe.

Original records

CVE-2026-66758

View the latest unmodified CVE JSON from the official source. It may be newer than this imported page.

cve.new JSON →

Underlying weaknesses

The source’s classification of what caused the vulnerability.

CWE-190 ↗

Integer Overflow or Wraparound

redhat

Contributing organizations · 2

redhat

Assigning organization

2026-11-04

CISA-ADP

Additional data publisher

2026-07-29

Timeline

All times UTC

27 Jul 2026, 19:07
Advisory published
Publication date supplied by the source.
4 Nov 2026, 23:01
Source updated
Latest modification date supplied by the source.
5 Nov 2026, 01:48
Last imported by cve.new
Latest catalog import, not the date we first saw this advisory.

What changed

Follow changes

CVE · CVE-2026-667582026-11-05

Observed 2026-11-05T01:48:58.731Z · upstream updated 2026-11-04T23:01:02.540Z

Product or version evidence changed

before

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    "vendor": "GNOME",
    "name": "GIMP",
    "platforms": [],
    "versions": [],
    "defaultStatus": "affected",
    "cpes": [],
    "source": "redhat",
    "url": "https://www.cve.org/CVERecord?id=CVE-2026-66758"
  },
  {
    "vendor": "Red Hat",
    "name": "Red Hat Enterprise Linux 8",
    "platforms": [],
    "versions": [
      {
        "version": "8100020260824165450.4c9c024f",
        "status": "unaffected",
        "lessThan": "*",
        "versionType": "rpm"
      }
    ],
    "defaultStatus": "affected",
    "cpes": [
      "cpe:/a:redhat:enterprise_linux:8::appstream"
    ],
    "source": "redhat",
    "url": "https://www.cve.org/CVERecord?id=CVE-2026-66758"
  },
  {
    "vendor": "Red Hat",
    "name": "Red Hat Enterprise Linux 9",
    "platforms": [],
    "versions": [
      {
        "version": "2:3.0.4-4.el9_8.9",
        "status": "unaffected",
        "lessThan": "*",
        "versionType": "rpm"
      }
    ],
    "defaultStatus": "affected",
    "cpes": [
      "cpe:/a:redhat:enterprise_linux:9::appstream"
    ],
    "source": "redhat",
    "url": "https://www.cve.org/CVERecord?id=CVE-2026-66758"
  },
  {
    "vendor": "Red Hat",
    "name": "Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions",
    "platforms": [],
    "versions": [
      {
        "version": "2:2.99.8-4.el9_2.7",
        "status": "unaffected",
        "lessThan": "*",
        "versionType": "rpm"
      }
    ],
    "defaultStatus": "affected",
    "cpes": [
      "cpe:/a:redhat:rhel_e4s:9.2::appstream"
    ],
    "source": "redhat",
    "url": "https://www.cve.org/CVERecord?id=CVE-2026-66758"
  },
  {
    "vendor": "Red Hat",
    "name": "Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions",
    "platforms": [],
    "versions": [
      {
        "version": "2:2.99.8-4.el9_4.19",
        "status": "unaffected",
        "lessThan": "*",
        "versionType": "rpm"
      }
    ],
    "defaultStatus": "affected",
    "cpes": [
      "cpe:/a:redhat:rhel_e4s:9.4::appstream"
    ],
    "source": "redhat",
    "url": "https://www.cve.org/CVERecord?id=CVE-2026-66758"
  },
  {
    "vendor": "Red Hat",
    "name": "Red Hat Enterprise Linux 9.6 Extended Update Support",
    "platforms": [],
    "versions": [
      {
        "version": "2:2.99.8-4.el9_6.20",
        "status": "unaffected",
        "lessThan": "*",
        "versionType": "rpm"
      }
    ],
    "defaultStatus": "affected",
    "cpes": [
      "cpe:/a:redhat:rhel_eus:9.6::appstream"
    ],
    "source": "redhat",
    "url": "https://www.cve.org/CVERecord?id=CVE-2026-66758"
  },
  {
    "vendor": "Red Hat",
    "name": "Red Hat Enterprise Linux 6",
    "platforms": [],
    "versions": [],
    "defaultStatus": "affected",
    "cpes": [
      "cpe:/o:redhat:enterprise_linux:6"
    ],
    "source": "redhat",
    "url": "https://www.cve.org/CVERecord?id=CVE-2026-66758"
  },
  {
    "vendor": "Red Hat",
    "name": "Red Hat Enterprise Linux 7",
    "platforms": [],
    "versions": [],
    "defaultStatus": "affected",
    "cpes": [
      "cpe:/o:redhat:enterprise_linux:7"
    ],
    "source": "redhat",
    "url": "https://www.cve.org/CVERecord?id=CVE-2026-66758"
  }
]

after

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    "vendor": "GNOME",
    "name": "GIMP",
    "platforms": [],
    "versions": [],
    "defaultStatus": "affected",
    "cpes": [],
    "source": "redhat",
    "url": "https://www.cve.org/CVERecord?id=CVE-2026-66758"
  },
  {
    "vendor": "Red Hat",
    "name": "Red Hat Enterprise Linux 8",
    "platforms": [],
    "versions": [
      {
        "version": "8100020260824165450.4c9c024f",
        "status": "unaffected",
        "lessThan": "*",
        "versionType": "rpm"
      }
    ],
    "defaultStatus": "affected",
    "cpes": [
      "cpe:/a:redhat:enterprise_linux:8::appstream"
    ],
    "source": "redhat",
    "url": "https://www.cve.org/CVERecord?id=CVE-2026-66758"
  },
  {
    "vendor": "Red Hat",
    "name": "Red Hat Enterprise Linux 9",
    "platforms": [],
    "versions": [
      {
        "version": "2:3.0.4-4.el9_8.9",
        "status": "unaffected",
        "lessThan": "*",
        "versionType": "rpm"
      }
    ],
    "defaultStatus": "affected",
    "cpes": [
      "cpe:/a:redhat:enterprise_linux:9::appstream"
    ],
    "source": "redhat",
    "url": "https://www.cve.org/CVERecord?id=CVE-2026-66758"
  },
  {
    "vendor": "Red Hat",
    "name": "Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions",
    "platforms": [],
    "versions": [
      {
        "version": "2:2.99.8-4.el9_2.7",
        "status": "unaffected",
        "lessThan": "*",
        "versionType": "rpm"
      }
    ],
    "defaultStatus": "affected",
    "cpes": [
      "cpe:/a:redhat:rhel_e4s:9.2::appstream"
    ],
    "source": "redhat",
    "url": "https://www.cve.org/CVERecord?id=CVE-2026-66758"
  },
  {
    "vendor": "Red Hat",
    "name": "Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions",
    "platforms": [],
    "versions": [
      {
        "version": "2:2.99.8-4.el9_4.19",
        "status": "unaffected",
        "lessThan": "*",
        "versionType": "rpm"
      }
    ],
    "defaultStatus": "affected",
    "cpes": [
      "cpe:/a:redhat:rhel_e4s:9.4::appstream"
    ],
    "source": "redhat",
    "url": "https://www.cve.org/CVERecord?id=CVE-2026-66758"
  },
  {
    "vendor": "Red Hat",
    "name": "Red Hat Enterprise Linux 9.6 Extended Update Support",
    "platforms": [],
    "versions": [
      {
        "version": "2:2.99.8-4.el9_6.20",
        "status": "unaffected",
        "lessThan": "*",
        "versionType": "rpm"
      }
    ],
    "defaultStatus": "affected",
    "cpes": [
      "cpe:/a:redhat:rhel_eus:9.6::appstream"
    ],
    "source": "redhat",
    "url": "https://www.cve.org/CVERecord?id=CVE-2026-66758"
  },
  {
    "vendor": "Red Hat",
    "name": "Red Hat Enterprise Linux 6",
    "platforms": [],
    "versions": [],
    "defaultStatus": "affected",
    "cpes": [
      "cpe:/o:redhat:rhel_els:6"
    ],
    "source": "redhat",
    "url": "https://www.cve.org/CVERecord?id=CVE-2026-66758"
  },
  {
    "vendor": "Red Hat",
    "name": "Red Hat Enterprise Linux 7",
    "platforms": [],
    "versions": [],
    "defaultStatus": "affected",
    "cpes": [
      "cpe:/o:redhat:rhel_els:7"
    ],
    "source": "redhat",
    "url": "https://www.cve.org/CVERecord?id=CVE-2026-66758"
  }
]

Large field values are marked as truncated previews. Original source snapshots remain retained.

Showing up to 50 most recent observed changes.

Reading the signals

Severity · CVSS: Technical impact and attack conditions. The headline is the highest imported catalog score; sources may disagree.
Observed exploitation · KEV: An absent or unavailable KEV listing does not establish that exploitation has not occurred.
Predicted exploitation · EPSS: 0.30% estimated probability in the next 30 days. 2026-11-01 · FIRST EPSS.

CISA-ADP · SSVC

CISA Coordinator · 2026-07-28

Exploitation: none
Automatable: no
Technical Impact: total

SSVC describes the publisher’s decision context. Your organization’s exposure and priorities may differ.

Record identifiers

Aliases: None recorded

Source evidence

Request a correction or dispute

Start with the assigning organization for this record. Include the CVE ID, the disputed information, and supporting evidence. A dispute does not itself reject a record.

Find the responsible CNA →Official dispute and escalation process ↗

CVE CVE-2026-66758

Enrichment coverage

NVDAvailable

Checked 02/11/2026, 10:15:33 UTC

GHSAAvailable

Checked 02/11/2026, 10:15:34 UTC

EUVDAvailable

Checked 02/11/2026, 10:15:33 UTC

EPSSAvailable

Checked 02/11/2026, 10:15:33 UTC

Additional source evidence

FIRST EPSS · CVE-2026-66758

EPSS 0.30% probability of exploitation in the next 30 days. Percentile: 22.27% · 2026-11-01

Checked 02/11/2026, 10:15:33 UTC

ENISA EUVD · EUVD-2026-49402

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

Checked 02/11/2026, 10:15:33 UTC

NVD · CVE-2026-66758

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

Checked 02/11/2026, 10:15:33 UTC

GitHub Advisory Database · GHSA-p2xc-g3qc-p2mq

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

Checked 02/11/2026, 10:15:34 UTC

Sponsored by MoxsoBuild security habits with adaptive training and phishing simulations.View as JSON

Gimp: integer overflow in file-fits plugin causes a heap-based buffer overflow on crafted fits images

Severity and exploitation

What this means

Attack conditions

Affected versions

GIMP

affected

unaffected

unknown

Red Hat Enterprise Linux 8

affected

unaffected

unknown

Red Hat Enterprise Linux 9

affected

unaffected

unknown

Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions

affected

unaffected

unknown

Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions

affected

unaffected

unknown

Red Hat Enterprise Linux 9.6 Extended Update Support

affected

unaffected

unknown

Red Hat Enterprise Linux 6

affected

unaffected

unknown

Red Hat Enterprise Linux 7

affected

unaffected

unknown

What to do

Public exploit evidence

Original source description

References

Inside the record

Evidence available

Original records

Underlying weaknesses

Timeline

Advisory published

Source updated

Last imported by cve.new

What changed