CVE-2011-5320

scanf and related functions in glibc before 2.15 allow local users to cause a denial of service ...

6.2 MediumFix available

scanf and related functions in glibc before 2.15 allow local users to cause a denial of service (segmentation fault) via a large string of 0s.

Attack profile

How easy it is to exploit

Attack vector: Local
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: None
Integrity: None
Availability: High

Exploit likelihood

0.47%Down 0.6 points since Feb 4, 2022

What each source reports

NVD Score used 6.2

scanf and related functions in glibc before 2.15 allow local users to cause a denial of service (segmentation fault) via a large string of 0s.

Record: CVE-2011-5320
CVSS 3.0: 6.2 MediumCVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 2.0: 2.1 LowAV:L/AC:L/Au:N/C:N/I:N/A:P
Weakness: CWE-119
Updated: 2026-11-02

CVE List No score

scanf and related functions in glibc before 2.15 allow local users to cause a denial of service (segmentation fault) via a large string of 0s.

Record: CVE-2011-5320
Updated: 2026-11-02

EUVDEUVD-2011-5219 No score

scanf and related functions in glibc before 2.15 allow local users to cause a denial of service (segmentation fault) via a large string of 0s.

Record: EUVD-2011-5219
Updated: 2026-11-03

GitHub AdvisoriesGHSA-m3xm-963r-gm9q 6.2

scanf and related functions in glibc before 2.15 allow local users to cause a denial of service ...

scanf and related functions in glibc before 2.15 allow local users to cause a denial of service (segmentation fault) via a large string of 0s.

Record: GHSA-m3xm-963r-gm9q
CVSS 3.0: 6.2 MediumCVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness: CWE-119
Updated: 2026-11-02

OSVBELL-CVE-2011-5320 6.2

CVE-2011-5320 does not affect BellSoft software

Record: BELL-CVE-2011-5320
CVSS 3.0: 6.2 MediumCVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-02

OSV 6.2

scanf and related functions in glibc before 2.15 allow local users to cause a denial of service (segmentation fault) via a large string of 0s.

Record: CVE-2011-5320
CVSS 3.0: 6.2 MediumCVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-02

OSVDEBIAN-CVE-2011-5320 6.2

scanf and related functions in glibc before 2.15 allow local users to cause a denial of service (segmentation fault) via a large string of 0s.

Record: DEBIAN-CVE-2011-5320
CVSS 3.0: 6.2 MediumCVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-02

OSVUBUNTU-CVE-2011-5320 6.2

scanf and related functions in glibc before 2.15 allow local users to cause a denial of service (segmentation fault) via a large string of 0s.

Record: UBUNTU-CVE-2011-5320
CVSS 3.0: 6.2 MediumCVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-02

Affected products

gnu glibc

Affected packages

Affected packages
Package	Affected	Fixed
`glibc` Debian:12	before 2.15	2.15
`glibc` Debian:13	before 2.15	2.15
`glibc` Debian:14	before 2.15	2.15
`eglibc` Debian:6.0	before 2.11.3-4+deb6u5, plus listed versions 2.11.2-102.11.2-10+m68k.12.11.2-112.11.2-11+m68k.12.11.2-12 Show 5 moreShow less 2.11.2-132.11.3-12.11.3-22.11.3-32.11.3-4	2.11.3-4+deb6u5

History

History
Recorded	Changed	Sources
Nov 3, 2026	affected
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2011-5320 is a medium vulnerability (CVSS 6.2) in Gnu Glibc, published March 6, 2015. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.47%, the 40th percentile. Fixed in glibc 2.15.

References

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