CVE-2021-35942

Advisory lineage Upstream: 0 Downstream: 15
Modified
Published: 22 Jul 2021, 00:00
Last modified:13 Feb 2026, 20:00

Vulnerability Summary

Overall Risk (default)
high
70/100
CVSS Score
9.1 CRITICAL
v3.1 (nvd)
EPSS Score
1.41% LOW
1% probability +0.30%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

22 Jul 2021, 00:00
Published
Vulnerability first disclosed
13 Feb 2026, 20:00
Last Modified
Vulnerability information updated

Description

The wordexp function in the GNU C Library (aka glibc) through 2.33 may crash or read arbitrary memory in parse_param (in posix/wordexp.c) when called with an untrusted, crafted pattern, potentially resulting in a denial of service or disclosure of information. This occurs because atoi was used but strtoul should have been used to ensure correct calculations.

CVSS Metrics

  • v3.1•CRITICAL•Score: 9.1CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
  • v2.0•MEDIUM•Score: 6.4AV:N/AC:L/Au:N/C:P/I:N/A:P

EPSS Trends

Current EPSS score: 1.41%• Percentile: 81%

Techniques & Countermeasures

  • CWE-190•Integer Overflow or Wraparound

    The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.

  • CWE-704•Incorrect Type Conversion or Cast

    The product does not correctly convert an object, resource, or structure from one type to a different type.

Affected Systems

  • debian•debian_linux

    10.0

  • gnu•glibc

    < 2.31

  • netapp•active_iq_unified_manager

    na

  • netapp•e-series_santricity_os_controller

    ≥ 11.0, ≤ 11.70.1

  • netapp•hci_management_node

    na

  • netapp•ontap_select_deploy_administration_utility

    na

  • netapp•solidfire

    na

References (6)