Passing an effectively empty string to the `,ccs=` syntax extension of the mode argument in the `fopen` function in the GNU C Library version 2.45 or…
Passing an effectively empty string to the `,ccs=` syntax extension of the mode argument in the `fopen` function in the GNU C Library version 2.45 or earlier may result in a heap buffer overflow when the mode string input to the function is attacker controlled. This usage pattern is not seen in applications in common GNU/Linux distributions and applications that process user-supplied values for `ccs` should not pass them through without validation.
Read at NIST National Vulnerability Database (CVE API 2.0)
- Product
- glibc
- CVSS
- 4.9
- Exposure class
- Operating system
Why it ranks 8 (Routine)
- CVSS 4.9 medium
- Product class: operating system
- Recency: items published within 24 hours gain 15, within 72 hours 6, within 7 days 2.
Links
- NIST National Vulnerability Database (CVE API 2.0) (nvd.nist.gov)
- CVE-2026-18374 on this site · NVD · CVE.org · Vulnpedia
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