CVE-2026-120436 (GCVE-0-2026-120436)

Vulnerability from cvelistv5 – Published: 2026-11-02 14:28 – Updated: 2026-11-02 17:34
VLAI
Title
Netpbm before 10.86.51, 11.02.30, and 11.15.08 Heap Overflow via jbigtopnm
Summary
Netpbm before 10.86.51, 11.x before 11.02.30, and 11.03 before 11.15.08 contains an integer overflow in jbigtopnm that causes heap buffer overflow when computing output buffer size. Attackers can supply a crafted multi-plane JBIG file with large header dimensions so jbg_dec_merge_planes() overflows the undersized buffer, causing crashes or potentially code execution.
Severity
8.5 (High)
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-02 17:10 UTC
CWE
  • CWE-190 - Integer Overflow or Wraparound
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 7380 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Netpbm Netpbm Affected: 0 , < 10.86.51 (custom)
Affected: 11.0 , < 11.02.30 (custom)
Affected: 11.03 , < 11.15.08 (custom)
    cpe:2.3:a:netpbm_project:netpbm:*:*:*:*:*:*:*:*
    cpe:2.3:a:netpbm_project:netpbm:*:*:*:*:*:*:*:*
    cpe:2.3:a:netpbm_project:netpbm:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-09-08 00:00
Credits
Tristan Madani (Talence Security) Bryan Henderson
Show details on NVD website
To clipboard 

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        "dateReserved": "2026-11-02T12:42:14.231Z",
        "dateUpdated": "2026-11-02T17:34:08.399Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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Tags
Taxonomy of the tags.




Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.

Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

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    Related by attack behaviour

    Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.