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CVE-2013-4788

MEDIUM · CVSS 5.1EPSS 11.4%EU EUVD

The PTR_MANGLE implementation in the GNU C Library (aka glibc or libc6) 2.4, 2.17, and earlier, and Embedded GLIBC (EGLIBC) does not initialize the random value for the pointer guard, which makes it easier for context-dependent attackers to control execution flow by leveraging a buffer-overflow vulnerability in an application and using the known zero value pointer guard to calculate a pointer address.

Key facts

CVSS score
5.1 (v2.0)
Severity
MEDIUM
CVSS vector
AV:N/AC:H/Au:N/C:P/I:P/A:P
Weakness (CWE)
CWE-20
EPSS score
11.4% (96th percentile)
In CISA KEV
No
In EU EUVD
Yes (EUVD-2013-4634)
Published
October 4, 2013
NVD last modified
June 16, 2026
Status
Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2013-4634 in the EU Vulnerability Database. Last updated in EUVD on August 6, 2024.

View on the EU Vulnerability Database

Affected products

  • gnu / eglibc
  • gnu / glibc
  • gnu / glibc
  • gnu / glibc
  • gnu / glibc
  • gnu / glibc
  • gnu / glibc
  • gnu / glibc
  • gnu / glibc
  • gnu / glibc
  • gnu / glibc
  • gnu / glibc
  • gnu / glibc
  • gnu / glibc
  • gnu / glibc
  • gnu / glibc
  • gnu / glibc
  • gnu / glibc
  • gnu / glibc
  • gnu / glibc
  • gnu / glibc
  • gnu / glibc
  • gnu / glibc
  • gnu / glibc
  • gnu / glibc
  • gnu / glibc
  • gnu / glibc
  • gnu / glibc

References

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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