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No exploitation reportedFix available

CVE-2025-10921

No exploitation reported by the sources we read.

  • Published2025-10-29
  • WeaknessCWE-122 · CWE-787

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

GIMP HDR File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of GIMP. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the parsing of HDR files. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-27803.

Timeline

dates in UTC
  1. 2025-10-2920:15CVE publishedNVD

Versions per branch

NVD
Gimp
BranchAffectedFixed in
3.0= 3.0.4no fix published
Debian debian linux
BranchAffectedFixed in
11.0= 11.0no fix published

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Products declared by the CNA1 product

As zdi, the CNA that assigned this CVE, declared them in the CVE record; versions as written.

  • GIMPother versions: unknown
    Affected
    • = 3.0.4no fix stated

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2025-10-29

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • geglUbuntu:Pro:20.04:LTSall versions · no fixed version listed
  • geglUbuntu:Pro:18.04:LTSall versions · no fixed version listed
  • geglUbuntu:Pro:16.04:LTSall versions · no fixed version listed
  • geglUbuntu:26.10all versions · no fixed version listed
  • geglUbuntu:26.04:LTSall versions · no fixed version listed
  • geglUbuntu:25.10all versions · no fixed version listed
  • geglUbuntu:24.04:LTSall versions · no fixed version listed
  • geglUbuntu:22.04:LTSall versions · no fixed version listed

35 more package ranges on OSV.dev

Vendor advisories

  • CVE-2025-10921 Red Hat Product Security121 products fixed · 6 known affected

    gimp: GIMP HDR File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability

    gimp as a component of Red Hat Enterprise Linux 6 · gimp-devel as a component of Red Hat Enterprise Linux 6 · gimp-devel-tools as a component of Red Hat Enterprise Linux 6 · +3 more

  • RHSA-2025:22417 Red Hat Product Security97 products fixed

    Red Hat Security Advisory: gimp:2.8 security update

  • RHSA-2025:21968 Red Hat Product Security24 products fixed

    Red Hat Security Advisory: gimp security update

Full record on NVD

Fix

  1. Vendor fix Red Hat Product Security RHSA-2025:22417 · 97 productsFor details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
  2. Workaround from the vendor Red Hat Product Security RHSA-2025:22417 · 97 productsNo mitigation is currently available that meets Red Hat Product Security’s standards for usability, deployment, applicability, or stability.
  3. No fix planned, says the vendor Red Hat Product Security CVE-2025-10921 · 6 productsOut of support scope

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

  • CISA-ADPSSVC decisionnone2025-10-30
  • CNACVSS 3.07.8known since 2026-10-23
  • CNAweakness (CWE)CWE-122known since 2026-10-23
  • NVDweakness (CWE)CWE-787read 2026-10-23
  • FIRST EPSSEPSS score0.6 %2026-11-08
  • OSVaffected packages—
  • GitHub Advisoriesadvisory—

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Published
2025-10-29
Last Modified
2026-10-19
NVD status
Analyzed
GitHub Advisory
GHSA-6pqm-mccv-6977

Frequently asked questions

What is CVE-2025-10921?

GIMP HDR File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of GIMP. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the parsing of HDR files. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-27803.

Is CVE-2025-10921 actively exploited?

Active exploitation of CVE-2025-10921 has not been confirmed. Its EPSS score was 0.6% on 2026-11-08, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2025-10921?

CVE-2025-10921 has a CVSS v3 base score of 7.8 (HIGH severity), with vector string CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

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