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Vulnerability Intelligence Report

CVE-2023-25139

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.

No Active Exploit Signals
CVSS Base Score
9.8
CRITICAL
Exploitability:3.9
Impact Score:5.9
EPSS Probability:1.42%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
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Authentication
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Weaponization
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SSVC Action
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Weaknesses (CWE)

CWE-787 ↗CWE-787 Out-of-bounds Write

Affected Products & Versions

Vendor Product Affected Versions
gnu glibc 2.37

References & Technical Advisories

No reference links found.

Threat Intelligence Signals

EPSS Score
1.423%

Identity & Timeline

StatusPUBLISHED
Assigning AuthorityMITRE Corporation · N/A · USA
Reserved2023-02-03T00:00:00
Published2023-02-03T00:00:00
Last Updated2025-03-26T14:49:09

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