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  4. CVE 2026 78465 gimp integer overflow in pcx loader planes4 leads
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Back to active CVEs
High · CVSS 7.0CVE-2026-78465

Gimp: integer overflow in pcx loader (planes=4) leads to heap overflow on 32-bitCVE-2026-78465

Answer in brief

CVE-2026-78465 records a High severity (CVSS 7.0) vulnerability in Gimp: integer overflow in pcx loader (planes=4) leads to heap overflow on 32-bit. The current sources do not mark it as known exploited. The current feed maps GNOME/gimp (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Aug 24, 2026Updated Sep 1, 2026Source checked Oct 9, 2026First seen by HOL Aug 24, 2026Material review Sep 1, 2026
Upstream Advisory

Key facts

Risk
High · CVSS 7.0
Exploitation
Not marked as known exploited
Affected software
3 mapped packages or products
Fix availability
Not reported

Why this deserves its current priority

CVSS is 7.0. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps GNOME/gimp (generic). Check affected ranges and fixed versions before updating.

Affected products and reported versions
ProductAffected versionsFixed versions
cpe:2.3:a:gimp:gimp:*:*:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:a:gimp:gimp:3.3.1:*:*:*:*:*:*:*Not reportedNot reported
Mapped affected packages and fixed versions
PackageAffected rangeFixed version
GNOME/gimpgeneric*Not reported

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for GNOME/gimp.
  2. 2Review the reported fix. Source-reported workaround: To mitigate this vulnerability, do not open PCX files from untrusted sources with GIMP.

Evidence timeline and material changes

  1. Published upstream

    Aug 24, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Sep 1, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Aug 24, 2026

Sources and claim methodology

  • Source referenceaccess.redhat.com
  • Source referencebugzilla.redhat.com
  • Source referencegitlab.gnome.org
Upstream source description

A flaw was found in the file-pcx plugin in GIMP, affecting 32-bit builds only. When processing a PCX image file, the plugin calculates memory allocation sizes based on the image dimensions and the number of color planes. If a crafted file sets the number of planes to 4 alongside sufficiently large dimensions, the calculation exceeds the 32-bit integer limit and overflows, resulting in an undersized heap-based buffer allocation. This integer overflow issue results in a heap-based buffer overflow when the plugin subsequently writes image data into the undersized buffer, causing memory corruption, potentially leading to arbitrary code execution or a denial of service.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • x64dbg-MCP Server vulnerable to pre-authentication denial of service through Content-Length integer overflowAlso CWE-190
  • MariaDB: `qc_info` plugin can do OOB reads if query contains \0Same generic ecosystem
  • MariaDB: mysql_json plugin OOB readsSame generic ecosystem
  • MariaDB: environment injection via wsrep bootstrap in the mariadb.service fileSame generic ecosystem
  • MariaDB Connector/C: libmariadb allowed cleartext password leakage on TLS hostname verification failureSame generic ecosystem
  • MariaDB: insufficient validation of binary frm data when opening a tableSame generic ecosystem

Record context

Vulnerability class
RCE
EPSS
Not reported
CWE IDs
CWE-190
Source
CVE List V5
Source checked
Oct 9, 2026
References
3 linked sources
Open source record