High · CVSS 8.5CVE-2026-120435

Netpbm before 10.86.51, 11.02.30, and 11.15.08 Heap Overflow in xpmtoppmCVE-2026-120435

Answer in brief

CVE-2026-120435 records a High severity (CVSS 8.5) vulnerability in Netpbm before 10.86.51, 11.02.30, and 11.15.08 Heap Overflow in xpmtoppm. The current sources do not mark it as known exploited. The current feed maps Netpbm/Netpbm (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 Nov 2, 2026Updated Nov 2, 2026Source checked Nov 2, 2026First seen by HOL Nov 2, 2026Material review Nov 2, 2026

Upstream Advisory

Key facts

Risk: High · CVSS 8.5
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Available

Why this deserves its current priority

CVSS is 8.5. 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 Netpbm/Netpbm (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Netpbm/Netpbmgeneric	>=0 <10.86.51 \|\| >=11.0 <11.02.30 \|\| >=11.03 <11.15.08	10.86.51, 11.02.30, 11.15.08

Recommended response

Check inventory. Check lockfiles and deployed manifests for Netpbm/Netpbm.
Review the reported fix. Update Netpbm/Netpbm to 10.86.51 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Nov 2, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Nov 2, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Nov 2, 2026

Sources and claim methodology

Upstream source description

Netpbm before 10.86.51, 11.x before 11.02.30, and 11.03 before 11.15.08 contains a heap buffer overflow in xpmtoppm caused by an unvalidated characters-per-pixel value in the XPM header. Attackers can supply a crafted XPM file with characters-per-pixel greater than 3 to overrun fixed 3-byte colorName hash entries, causing crashes or potentially code execution.

Quoted source text, attributed separately from HOL analysis.

Cortex-M module ports save a preempted user-mode module thread's registers through its unchecked stack pointer in privileged modeAlso CWE-787