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Servers and applications

CVE-2009-4881

Integer overflow in the __vstrfmon_l function in stdlib/strfmon_l.c in the strfmon implementation in the GNU C Library (aka glibc or libc6) before 2.10.1 allows context-dependent attackers to cause a denial of service (application crash) via a crafted format string, as demonstrated by the %99999999999999999999n string, a related issue to CVE-2008-1391.

Severity
Medium 5.0
Published
1 Jun 2010
Last changed
16 Jun 2026
Added to UpHeron
1 Nov 2026
Exploit chance
2% in the next 30 daysHigher than 81% of CVEs. EPSS by FIRST, 12 Nov 2026
Weakness
CWE-189
Attack
Over the network · No login needed
Attacker can
Slow it down
CVSS vector
AV:N/AC:L/Au:N/C:N/I:N/A:P
Sources
NVD

Affected software

SoftwareAffected versions
GNU C LibraryServers and applications · cpe:a:gnu:glibc
  • Version 2.8
  • Version 2.7
  • Version 2.6.1
  • Version 2.6
All 46 release lines
  • Every version up to 2.9
  • Version 1.00
  • Version 1.01
  • Version 1.02
  • Version 1.03
  • Version 1.04
  • Version 1.05
  • Version 1.06
  • Version 1.07
  • Version 1.08
  • Version 1.09
  • Version 2.0
  • Version 2.0.1
  • Version 2.0.2
  • Version 2.0.3
  • Version 2.0.4
  • Version 2.0.5
  • Version 2.0.6
  • Version 2.1
  • Version 2.1.1
  • Version 2.1.1.6
  • Version 2.1.2
  • Version 2.1.3
  • Version 2.1.3.10
  • Version 2.1.9
  • Version 2.2
  • Version 2.2.1
  • Version 2.2.2
  • Version 2.2.3
  • Version 2.2.4
  • Version 2.2.5
  • Version 2.3
  • Version 2.3.1
  • Version 2.3.2
  • Version 2.3.3
  • Version 2.3.4
  • Version 2.3.5
  • Version 2.3.6
  • Version 2.3.10
  • Version 2.4
  • Version 2.5
  • Version 2.5.1
  • Version 2.6
  • Version 2.6.1
  • Version 2.7
  • Version 2.8

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2009-4881
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2009-4881