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CVE-2019-9169

In the GNU C Library (aka glibc or libc6) through 2.29, proceed_next_node in posix/regexec.c has a heap-based buffer over-read via an attempted case-insensitive regular-expression match.

Severity
Critical 9.8
Published
26 Feb 2019
Last changed
14 Oct 2026
Added to UpHeron
1 Nov 2026
Exploit chance
4.7% in the next 30 daysHigher than 91% of CVEs. EPSS by FIRST, 10 Nov 2026
Weakness
Out-of-bounds read (CWE-125)
Attack
Over the network · No login needed · No user action needed
Attacker can
Read data · Change data · Take it down
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Sources
NVD

Affected software

SoftwareAffected versions
GNU C LibraryServers and applications · cpe:a:gnu:glibc
  • Every version up to 2.29

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2019-9169
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2019-9169