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    4 vulnerabilities by fltk

    CVE-2026-116724 (GCVE-0-2026-116724)

    Vulnerability from nvd – Published: 2026-10-26 21:52 – Updated: 2026-10-31 01:56
    VLAI
    Title
    FLTK through 1.4.5 Heap Buffer Overflow via Fl_BMP_Image Integer Overflow
    Summary
    FLTK through 1.4.5 contains an integer overflow vulnerability in Fl_BMP_Image::load_bmp_() that causes undersized pixel buffer allocation from file-supplied width and height. Attackers can supply a crafted BMP or ICO file with large dimensions so row decoding writes file-derived data past the heap buffer, corrupting the application heap.
    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 2026-10-31 01:56 UTC
    CWE
    • CWE-190 - Integer Overflow or Wraparound
    Assigner
    VulnCheck CNA under the mitre root
    CNA scorecard B 84/100 over 7402 records in the last 180 days details
    References
    Impacted products
    Vendor Product Version
    fltk fltk Affected: 0 , ≤ 1.4.5 (custom)
        cpe:2.3:a:fltk_project:fltk:*:*:*:*:*:*:*:*
    		Create a notification for this product.
    Date Public
    2026-10-22 00:00
    Credits
    HaiND from the Post and Telecommunication Institute of Technology
    Show details on NVD website
    To clipboard 

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    CVE-2026-116723 (GCVE-0-2026-116723)

    Vulnerability from nvd – Published: 2026-10-26 21:52 – Updated: 2026-10-26 21:52
    VLAI
    Title
    FLTK through 1.4.5 Stack Buffer Overflow via Fl_BMP_Image colors_used Field
    Summary
    FLTK through 1.4.5 contains a stack-based buffer overflow vulnerability in Fl_BMP_Image::load_bmp_() that allows attackers to corrupt stack memory by supplying an oversized BMP colors_used field. Attackers can craft BMP or ICO files with colors_used above 256 to overflow the 768-byte colormap array, causing crashes or potential 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
    CWE
    • CWE-121 - Stack-based Buffer Overflow
    Assigner
    VulnCheck CNA under the mitre root
    CNA scorecard B 84/100 over 7402 records in the last 180 days details
    References
    Impacted products
    Vendor Product Version
    fltk fltk Affected: 0 , ≤ 1.4.5 (custom)
        cpe:2.3:a:fltk_project:fltk:*:*:*:*:*:*:*:*
    		Create a notification for this product.
    Date Public
    2026-10-22 00:00
    Credits
    HaiND from the Post and Telecommunication Institute of Technology
    Show details on NVD website
    To clipboard 

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    CVE-2026-116724 (GCVE-0-2026-116724)

    Vulnerability from cvelistv5 – Published: 2026-10-26 21:52 – Updated: 2026-10-31 01:56
    VLAI
    Title
    FLTK through 1.4.5 Heap Buffer Overflow via Fl_BMP_Image Integer Overflow
    Summary
    FLTK through 1.4.5 contains an integer overflow vulnerability in Fl_BMP_Image::load_bmp_() that causes undersized pixel buffer allocation from file-supplied width and height. Attackers can supply a crafted BMP or ICO file with large dimensions so row decoding writes file-derived data past the heap buffer, corrupting the application heap.
    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 2026-10-31 01:56 UTC
    CWE
    • CWE-190 - Integer Overflow or Wraparound
    Assigner
    VulnCheck CNA under the mitre root
    CNA scorecard B 84/100 over 7402 records in the last 180 days details
    References
    Impacted products
    Vendor Product Version
    fltk fltk Affected: 0 , ≤ 1.4.5 (custom)
        cpe:2.3:a:fltk_project:fltk:*:*:*:*:*:*:*:*
    		Create a notification for this product.
    Date Public
    2026-10-22 00:00
    Credits
    HaiND from the Post and Telecommunication Institute of Technology
    Show details on NVD website
    To clipboard 

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    CVE-2026-116723 (GCVE-0-2026-116723)

    Vulnerability from cvelistv5 – Published: 2026-10-26 21:52 – Updated: 2026-10-26 21:52
    VLAI
    Title
    FLTK through 1.4.5 Stack Buffer Overflow via Fl_BMP_Image colors_used Field
    Summary
    FLTK through 1.4.5 contains a stack-based buffer overflow vulnerability in Fl_BMP_Image::load_bmp_() that allows attackers to corrupt stack memory by supplying an oversized BMP colors_used field. Attackers can craft BMP or ICO files with colors_used above 256 to overflow the 768-byte colormap array, causing crashes or potential 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
    CWE
    • CWE-121 - Stack-based Buffer Overflow
    Assigner
    VulnCheck CNA under the mitre root
    CNA scorecard B 84/100 over 7402 records in the last 180 days details
    References
    Impacted products
    Vendor Product Version
    fltk fltk Affected: 0 , ≤ 1.4.5 (custom)
        cpe:2.3:a:fltk_project:fltk:*:*:*:*:*:*:*:*
    		Create a notification for this product.
    Date Public
    2026-10-22 00:00
    Credits
    HaiND from the Post and Telecommunication Institute of Technology
    Show details on NVD website
    To clipboard 

    {
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          "repo": "https://github.com/fltk/fltk",
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          "value": "FLTK through 1.4.5 contains a stack-based buffer overflow vulnerability in Fl_BMP_Image::load_bmp_() that allows attackers to corrupt stack memory by supplying an oversized BMP colors_used field. Attackers can craft BMP or ICO files with colors_used above 256 to overflow the 768-byte colormap array, causing crashes or potential code execution."
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      "metrics": [
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          "tags": [
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          "tags": [
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          "url": "https://github.com/fltk/fltk/blob/release-1.4.5/src/Fl_BMP_Image.cxx#L255-L265"
        },
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          "url": "https://hackmd.io/@haindpwn/fltk-bmp-image-stack-heap-overflow"
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    "dateReserved": "2026-10-26T20:23:34.016Z",
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