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NVD / CVE Program· CNA redhat

CVE-2026-42169: Gimp: gimp apng loader heap-buffer-overflow when fctl width exceeds ihdr width (file-png.c)

HighCVSS 7.8 · v3.1—No exploit Fix available

Noroxi assessment

Priority: Monitor (action score 31/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.13% (FIRST EPSS).
  • Someone with local access to the system can trigger it. No account or password is required. A user must open a link or visit a page. No special conditions are required; it is repeatable.
  • Fixed version: gimp (AlmaLinux:9) 2:3.0.4-4.el9_8.9; gimp-libs (AlmaLinux:9) 2:3.0.4-4.el9_8.9; gimp (Debian:14) 3.2.4-1.

Low priority for now. Upgrade to gimp (AlmaLinux:9) 2:3.0.4-4.el9_8.9; gimp-libs (AlmaLinux:9) 2:3.0.4-4.el9_8.9; gimp (Debian:14) 3.2.4-1 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

A heap-buffer-overflow vulnerability exists in the APNG (Animated PNG) file loader of GIMP. This flaw occurs when the `fcTL` width exceeds the `IHDR` width, leading to pixel data being written past the end of a heap allocation. Additionally, a heap-based buffer overflow exists in the DDS plug-in due to a BPP mismatch in the `load_layer()` function. Both vulnerabilities can be triggered by opening a specially crafted image file, potentially leading to code execution.

Published
Aug 4, 2026
Updated
Nov 5, 2026
EPSS
0.1% · 2th percentile

Report tools

JSON

Action score

31

Monitor

Low priority for now.

CVSS
31 / 40 · 7.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.1%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
7.8
CNA · redhat
7.3
0.5 point gap

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

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2026-42169

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
redhatenterprise linux
redhatenterprise linux eus

Versions reported by the vendor

Affected version ranges reported by the assigning authority (redhat). Independent of NVD's CPE analysis and usually ahead of it.

  • Red Hat Red Hat Enterprise Linux 6

    • all versionsunknown

  • Red Hat Red Hat Enterprise Linux 7

    • all versionsunknown

  • Red Hat Red Hat Enterprise Linux 8

    • all versionsunknown

  • Red Hat Red Hat Enterprise Linux 9

    • 2:3.0.4-4.el9_8.9 and laternot affected · rpm

  • Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions

    • 2:2.99.8-4.el9_2.7 and laternot affected · rpm

  • Red Hat Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions

    • 2:2.99.8-4.el9_4.19 and laternot affected · rpm

  • Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support

    • 2:2.99.8-4.el9_6.20 and laternot affected · rpm

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • redhat enterprise linux9.0
  • redhat enterprise linux eus9.6

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
AlmaLinux:9gimpbefore 2:3.0.4-4.el9_8.92:3.0.4-4.el9_8.9
AlmaLinux:9gimp-libsbefore 2:3.0.4-4.el9_8.92:3.0.4-4.el9_8.9
Debian:14gimpbefore 3.2.4-13.2.4-1
Red Hat:enterprise_linux:9::appstreamgimpbefore 2:3.0.4-4.el9_8.92:3.0.4-4.el9_8.9
Red Hat:enterprise_linux:9::appstreamgimp-debuginfobefore 2:3.0.4-4.el9_8.92:3.0.4-4.el9_8.9
Red Hat:enterprise_linux:9::appstreamgimp-debugsourcebefore 2:3.0.4-4.el9_8.92:3.0.4-4.el9_8.9
Red Hat:enterprise_linux:9::appstreamgimp-devel-tools-debuginfobefore 2:3.0.4-4.el9_8.92:3.0.4-4.el9_8.9
Red Hat:enterprise_linux:9::appstreamgimp-libsbefore 2:3.0.4-4.el9_8.92:3.0.4-4.el9_8.9
Red Hat:enterprise_linux:9::appstreamgimp-libs-debuginfobefore 2:3.0.4-4.el9_8.92:3.0.4-4.el9_8.9
Red Hat:rhel_e4s:9.4::appstreamgimpbefore 2:2.99.8-4.el9_4.192:2.99.8-4.el9_4.19
Red Hat:rhel_e4s:9.4::appstreamgimp-debuginfobefore 2:2.99.8-4.el9_4.192:2.99.8-4.el9_4.19
Red Hat:rhel_e4s:9.4::appstreamgimp-debugsourcebefore 2:2.99.8-4.el9_4.192:2.99.8-4.el9_4.19
Red Hat:rhel_e4s:9.4::appstreamgimp-devel-tools-debuginfobefore 2:2.99.8-4.el9_4.192:2.99.8-4.el9_4.19
Red Hat:rhel_e4s:9.4::appstreamgimp-libsbefore 2:2.99.8-4.el9_4.192:2.99.8-4.el9_4.19
Red Hat:rhel_e4s:9.4::appstreamgimp-libs-debuginfobefore 2:2.99.8-4.el9_4.192:2.99.8-4.el9_4.19
Red Hat:rhel_eus:9.6::appstreamgimpbefore 2:2.99.8-4.el9_6.202:2.99.8-4.el9_6.20
Red Hat:rhel_eus:9.6::appstreamgimp-debuginfobefore 2:2.99.8-4.el9_6.202:2.99.8-4.el9_6.20
Red Hat:rhel_eus:9.6::appstreamgimp-debugsourcebefore 2:2.99.8-4.el9_6.202:2.99.8-4.el9_6.20
Red Hat:rhel_eus:9.6::appstreamgimp-devel-tools-debuginfobefore 2:2.99.8-4.el9_6.202:2.99.8-4.el9_6.20
Red Hat:rhel_eus:9.6::appstreamgimp-libsbefore 2:2.99.8-4.el9_6.202:2.99.8-4.el9_6.20
Red Hat:rhel_eus:9.6::appstreamgimp-libs-debuginfobefore 2:2.99.8-4.el9_6.202:2.99.8-4.el9_6.20

Same product

redhat: all records

Other highest-scoring records for the same primary product.

  • CVE-2015-3246libuser before 0.56.13-8 and 0.60 before 0.60-7, as used in the userhelper program in the usermode package, directly modifies /etc/passwd…KEV
    62This week
  • CVE-2023-50387Certain DNSSEC aspects of the DNS protocol (in RFC 4033, 4034, 4035, 6840, and related RFCs) allow remote attackers to cause a denial of…
    60This week
  • CVE-2017-5456A mechanism to bypass file system access protections in the sandbox using the file system request constructor through an IPC message.
    40Plan

Published before and after this one in the same product

  • ← EarlierCVE-2026-13601Jun 29, 2026 · Yelp: yelp-xsl: overly permissive content security policy in yelp allows host file disclosure from flatpak applications
    26Monitor
  • ← EarlierCVE-2026-6694Aug 3, 2026 · Gimp: gimp file-png plugin: denial of service via oversized apng trns chunk
    22Monitor
  • Later →CVE-2026-42170Aug 8, 2026 · Gimp: gimp dds plug-in heap-based buffer overflow via bpp mismatch in load_layer() (ddsread.c)
    31Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
almalinux:gimp2:3.0.4-4.el9_8.9 · AlmaLinux:9Package registry (OSV)
almalinux:gimp-libs2:3.0.4-4.el9_8.9 · AlmaLinux:9Package registry (OSV)
debian:gimp3.2.4-1 · Debian:14Package registry (OSV)
red hat:gimp2:3.0.4-4.el9_8.9 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:gimp-debuginfo2:3.0.4-4.el9_8.9 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:gimp-debugsource2:3.0.4-4.el9_8.9 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:gimp-devel-tools-debuginfo2:3.0.4-4.el9_8.9 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:gimp-libs2:3.0.4-4.el9_8.9 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:gimp-libs-debuginfo2:3.0.4-4.el9_8.9 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

  • CVE-2026-421704 days apartGimp: gimp dds plug-in heap-based buffer overflow via bpp mismatch in load_layer() (ddsread.c)
    31Monitor

Not on record for this CVE: patch commit or PR link · public bounty program.

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • No account or password is required.
  • A user must open a link or visit a page.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Local
Attack complexity
Low
Privileges required
None
User interaction
Required
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-131 · Incorrect Calculation of Buffer Size

CVSS vector

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

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

—

References

Show all references (5 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records