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libytnef vulnerabilities

Vulnerabilities published for libytnef in the last 30 days: 2. Listed in the KEV catalogue: 0.

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Vulnerabilities: 27

  1. CVE-2026-111146

    Medium · CVSS 6.9EPSS 0.13%No fix published

    ytnef through 2.1.2 Heap Out-of-Bounds Read via MAPIPrint in lib/ytnef.c

    ytnef through 2.1.2 contains a heap out-of-bounds read vulnerability in MAPIPrint() that allows attackers to read past heap allocations by supplying compressed RTF properties. Attackers can deliver a crafted winmail.dat whose decompressed RTF lacks a NUL terminator, causing printf to over-read, crashing ytnefprint and leaking adjacent heap bytes.

    Published Updated
  2. CVE-2026-111145

    Medium · CVSS 6.9EPSS 0.13%No fix published

    ytnef through 2.1.2 Heap Out-of-Bounds Read via DecompressRTF

    ytnef through 2.1.2 contains a heap out-of-bounds read vulnerability in DecompressRTF() in lib/ytnef.c that never validates uncompressedSize for uncompressed RTF streams. Attackers can supply a crafted winmail.dat TNEF attachment with a malicious PT_BINARY MAPI property to crash ytnefprint or libytnef callers and leak adjacent heap memory.

    Published Updated
  3. CVE-2017-9146

    High · CVSS 8.8EPSS 2.39%Fix available

    CVE-2017-9146

    The TNEFFillMapi function in lib/ytnef.c in libytnef in ytnef through 1.9.2 does not ensure a nonzero count value before a certain memory allocation, which allows remote attackers to cause a denial of service (heap-based buffer overflow and application crash) or possibly have unspecified other impact via a crafted tnef file.

    • Update to 1.9.3-1
    Published Updated

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