Reference page — cumulative record through Monday, October 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
CVE-2023-25139
n/a n/a — 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.
AV AC PR UI S C I A CVSS EPSS %ile KEV
N L N N U H H H 9.8 .0150 73.8 —
AFFECTED
Product Versions Fixed
n/a n/a – —
TIMELINE
Feb 3 Reserved by mitre
Feb 3 Published (CNA: mitre)
Oct 14 EXPLOIT PUBLISHED — CVE-2023-25139. Public exploit reference added.
Description
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.
Lifecycle
Complete event history — 3 events, chronological
| Date | Event | Detail |
| February 3, 2023 | Reserved | Reserved by mitre |
| February 3, 2023 | Published | Published (CNA: mitre) |
| October 14, 2026 | EXPLOIT PUBLISHED | EXPLOIT PUBLISHED — CVE-2023-25139. Public exploit reference added. |
Affected
Affected products and packages — 1 row
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
| n/a | n/a | — | n/a | — |
About this page
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2023-25139 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Monday, October 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.