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TI-2026-83824 Aliases CVE-2026-120432GHSA-53w3-xv39-2p7m

Integer overflow in Netpbm winicontopam corrupts heap memory

Priority LOW 38CWE-190Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
Passive
Attack complexity
Low
Attack requirements
None
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Partial Red Hat: 3 without a fix

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-190 and the CVSS impact.

Summary

Netpbm before 10.86.51, 11.02.30, and 11.15.08 contains an integer overflow in winicontopam. An attacker can supply a crafted ICO/CUR icon with a width or height above 32767, which wraps int16_t loop counters into negative row buffer indices and corrupts heap memory. The result is a crash or potential code execution. The CVSS 4.0 base score is 8.5 (HIGH), and the weakness is CWE-190, Integer Overflow or Wraparound.

Written with Claude Haiku 5.5 from the sources below · 2026-11-06

Description from the CNA

Netpbm before 10.86.51, 11.02.30, and 11.15.08 contains an integer overflow vulnerability in winicontopam that allows attackers to corrupt heap memory via oversized ICO/CUR dimensions. Attackers can supply a crafted icon file with width or height above 32767, wrapping int16_t loop counters into negative row buffer indices to cause crashes or potential code execution.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0017 6th percentileScored 2026-11-07
Fix Partial Netpbm (Netpbm): 10.86.51, 11.02.30, 11.15.08Red Hat: 3 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
NetpbmNetpbm10.63 to before 10.86.51; 11.0 to before 11.02.30; 11.03 to before 11.15.0810.86.51, 11.02.30, 11.15.08Patch availableCNA
  • Netpbm VendorNetpbm Affected 10.63 to before 10.86.51; 11.0 to before 11.02.30; 11.03 to before 11.15.08 Fixed in 10.86.51, 11.02.30, 11.15.08 Patch available CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:netpbm_project:netpbm:*:*:*:*:*:*:*:*——Netpbm Project
  • cpe:2.3:a:netpbm_project:netpbm:*:*:*:*:*:*:*:* Versions — — ·Netpbm Project

Remediation

Upgrade Netpbm to 10.86.51, 11.02.30, or 11.15.08, depending on the release line in use. Red Hat rates the issue Important, and no fixed Red Hat Enterprise Linux 7, 8, or 10 package is available yet.

Written with Claude Haiku 5.5 from the sources below · 2026-11-06

  • Fix · CNA Netpbm (Netpbm) Fixed in 10.86.51, 11.02.30, 11.15.08

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    Netpbm 10.86.51, 11.02.30, 11.15.08

    6 records Highest priority Priority LOW 6 LOW

    Other records, highest priority first

    • TI-2026-83828 Heap overflow in Netpbm jbigtopnm can crash the tool or run codePriority LOW 38
    • TI-2026-83827 Heap overflow in Netpbm xpmtoppm can crash or run codePriority LOW 38
    • TI-2026-83826 Stack buffer overflow in Netpbm picttoppm converterPriority LOW 38
    Show all 6 records →

Vendor assessments

Red Hat

Red Hat rating: Important. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux 10AffectedNo fix yet
Red Hat Enterprise Linux 7AffectedNo fix yet
Red Hat Enterprise Linux 8AffectedNo fix yet
Not affected: 2 products
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 9

Timeline

  1. 2026-11-02 Threatist record created from CVE-2026-120432
  2. 2026-11-02 Alias added: GHSA-53w3-xv39-2p7m
  3. 2026-11-02 CISA SSVC decision points changed
  4. 2026-11-02 Priority changed: MEDIUM → LOW
  5. 2026-11-02 Affected versions changed · Red Hat
  6. 2026-11-02 CVSS score added · Red Hat
  7. 2026-11-06 Affected versions changed · Red Hat

References

Patch 1

Other 4

  • TI-2026-76476 Heap out-of-bounds read in Netpbm rasttopnm leaks memory CVSS 4.0MEDIUM 6.9
  • TI-2003-00141 Multiple vulnerabilities in NetPBM 9.20 and earlier, and possibly other versions, may… CVSS 2.0HIGH 7.5
  • TI-2005-02810 pnmtopng in netpbm before 10.25, when using the -trans option, uses uninitialized size… CVSS 2.0HIGH 7.5
  • TI-2009-04054 Stack-based buffer overflow in converter/ppm/xpmtoppm.c in netpbm before 10.47.07 allows… CVSS 2.0HIGH 7.5
  • TI-2005-02339 pstopnm in netpbm does not properly use the "-dSAFER" option when calling Ghostscript to… CVSS 2.0HIGH 7.5
  • TI-2026-83828 Heap overflow in Netpbm jbigtopnm can crash the tool or run code CVSS 4.0HIGH 8.5
See all 22 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences