CVE-2018-1000052

7.5 highEPSS 1.4%

fmtlib version prior to version 4.1.0 (before commit 0555cea5fc0bf890afe0071a558e44625a34ba85) contains a Memory corruption (SIGSEGV), CWE-134 vulnerability in fmt::print() library function that can result in Denial of Service. This attack appear to be exploitable via Specifying an invalid format specifier in the fmt::print() function results in a SIGSEGV (memory corruption, invalid write). This vulnerability appears to have been fixed in after commit 8cf30aa2be256eba07bb1cefb998c52326e846e7.

Severity

CVSS 3.1

7.5 high

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS: 1.4% chance of exploitation in the next 30 days; higher than 71% of CVEs (scores of 2026-10-31)
CWE: CWE-134
Published: 2018-02-09
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

fmt:fmt

References

https://github.com/fmtlib/fmt/commit/8cf30aa2be256eba07bb1cefb998c52326e846e7
https://github.com/fmtlib/fmt/issues/642
https://github.com/fmtlib/fmt/commit/8cf30aa2be256eba07bb1cefb998c52326e846e7
https://github.com/fmtlib/fmt/issues/642

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