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CVE details

CVE-2026-111123

FluidSynth through 2.6.1 contains an out-of-bounds write vulnerability that allows attackers to corrupt heap and stack memory by supplying unvalidated SoundFont modulator destination values. Attackers can craft an SF2 file with PMOD/IMOD destinations of 63 to 255 that, when loaded and played, write past the voice generator array and updated_gen_bit, causing memory corruption and crashes.

Score
6.9 medium
Published
2026-10-15
Links
NVD · cve.org · Report wrong data

Matched ports (1)

PortPackageVersionStatusMaintainer
audio/fluidsynthfluidsynth2.6.1unaddressedmultimedia@FreeBSD.org

Template for a VuXML entry

Range taken from the CVE record, check it before committing. make newentry in security/vuxml creates the vid.

  <vuln vid="FIXME (make newentry)">
    <topic>FIXME -- FIXME</topic>
    <affects>
      <package>
	<name>fluidsynth</name>
	<range><lt>FIXME</lt></range>
      </package>
    </affects>
    <description>
      <body xmlns="http://www.w3.org/1999/xhtml">
	<p>FluidSynth through 2.6.1 contains an out-of-bounds write vulnerability
	that allows attackers to corrupt heap and stack memory by supplying
	unvalidated SoundFont modulator destination values. Attackers can
	craft an SF2 file with PMOD/IMOD destinations of 63 to 255 that, when
	loaded and played, write past the voice generator array and
	updated_gen_bit, causing memory corruption and crashes.</p>
      </body>
    </description>
    <references>
      <cvename>CVE-2026-111123</cvename>
      <url>https://nvd.nist.gov/vuln/detail/CVE-2026-111123</url>
    </references>
    <dates>
      <discovery>2026-10-15</discovery>
      <entry>2026-10-27</entry>
    </dates>
  </vuln>