CriticalFix available
mpfr4 — security advisory
sprintf in the GNU C Library (glibc) 2.37 has a buffer overflow (out-of-bounds write) in some situations with a correct buffer size. This is unrelated to CWE-676. It may write beyond the bounds of the destination buffer when attempting to write a padded, thousands-separated string representation of a number, if the buffer is allocated the exact size required to represent that number as a string. For example, 1,234,567 (with padding to 13) overflows by two bytes.
- Products
- mpfr4
- Affected versions
- Not specified
- Fixed versions
- 4.2.1-r0
- CVEs
- CVE-2023-25139
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 14:55 UTC · Revision 1
Source evidence
sprintf in the GNU C Library (glibc) 2.37 has a buffer overflow (out-of-bounds write) in some situations with a correct buffer size. This is unrelated to CWE-676. It may write beyond the bounds of the destination buffer when attempting to write a padded, thousands-separated string representation of a number, if the buffer is allocated the exact size required to represent that number as a string. For example, 1,234,567 (with padding to 13) overflows by two bytes.
osv:ALPINE-CVE-2023-25139
mpfr4
Fixed versions: 4.2.1-r0
mpfr4
Fixed versions: 4.2.1-r0
mpfr4
Fixed versions: 4.2.1-r0
mpfr4
Fixed versions: 4.2.1-r0
mpfr4
Fixed versions: 4.2.1-r0
mpfr4
Fixed versions: 4.2.1-r0
Complete source record
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"modified": "2026-10-26T17:17:58.612642146Z",
"provider": "osv",
"upstream": [
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"references": [
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"source_id": "core-osv",
"document_id": 454392,
"published_at": "2023-02-03T06:15:09.523+00:00"
}