{"id":"CVE-2023-25139","title":"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","summary":"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 t…","severity":"critical","cvss":9.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","cwe":["CWE-787"],"vendor":"gnu","product":"glibc","affected":["glibc = 2.37"],"published":"2023-02-03","updated":"2026-10-14","sourceUpdated":"2026-10-14T23:17:15.260","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2023-25139","references":[{"url":"http://www.openwall.com/lists/oss-security/2023/02/10/1","label":"cve@mitre.org"},{"url":"https://security.netapp.com/advisory/ntap-20230302-0010/","label":"cve@mitre.org"},{"url":"https://sourceware.org/bugzilla/show_bug.cgi?id=30068","label":"cve@mitre.org"},{"url":"http://www.openwall.com/lists/oss-security/2023/02/10/1","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://security.netapp.com/advisory/ntap-20230302-0010/","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://sourceware.org/bugzilla/show_bug.cgi?id=30068","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-398330.html","label":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"}],"tags":["nvd","cve.org"],"epss":0.01423,"epssPercentile":0.72365,"ingestedAt":"2026-10-15T00:02:07.126Z","ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"total","timestamp":"2025-03-26T14:48:30.307657Z"},"slug":"CVE-2023-25139","body":"## Overview\n\nsprintf 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.\n\n## Affected\n\n- `glibc = 2.37`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":54,"depthScoreParts":{"impact":53.9,"likelihood":0.3,"exploitation":0,"ransomware":0},"changes":[]}