CVE-2018-1000101

Severity: critical (CVSS 9.8 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2018-03-06 · updated 2026-06-17

Description

Mingw-w64 version 5.0.3 and earlier, 5.0.4, 6.0.0 and 7.0.0 contains an Improper Null Termination (CWE-170) vulnerability in mingw-w64-crt (libc)->(v)snprintf that can result in The bug may be used to corrupt subsequent string functions. This attack appear to be exploitable via Depending on the usage, worst case: network.

Affected products

Mingw-W64: through 5.0.3

References

https://raw.githubusercontent.com/distributedweaknessfiling/cvelist/master/2018/1000xxx/CVE-2018-1000101.json
https://sourceforge.net/p/mingw-w64/bugs/709/
https://sourceforge.net/p/mingw-w64/bugs/709/?limit=25#1d38/fefc/39aa
https://sourceforge.net/p/mingw-w64/mingw-w64/ci/v5.x/tree/mingw-w64-crt/stdio/snprintf.c#l15
https://sourceforge.net/p/mingw-w64/mingw-w64/ci/v5.x/tree/mingw-w64-crt/stdio/vsnprintf.c#l12
https://raw.githubusercontent.com/distributedweaknessfiling/cvelist/master/2018/1000xxx/CVE-2018-1000101.json
https://sourceforge.net/p/mingw-w64/bugs/709/
https://sourceforge.net/p/mingw-w64/bugs/709/?limit=25#1d38/fefc/39aa
https://sourceforge.net/p/mingw-w64/mingw-w64/ci/v5.x/tree/mingw-w64-crt/stdio/snprintf.c#l15
https://sourceforge.net/p/mingw-w64/mingw-w64/ci/v5.x/tree/mingw-w64-crt/stdio/vsnprintf.c#l12

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