CVE-2021-35942

CRITICAL
9.1
CVSS Score
Published: July 22, 2021 at 12:00 AM UTC
Updated: October 14, 2026 at 12:17 PM UTC
8 products affected across 4 vendorsDebian LinuxActive IQ Unified ManagerE Series Santricity OS Controller

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Severity
CRITICAL9.1
Exploit prediction
EPSS 3%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 2.31
Affected range stops below 2.31, so it looks safe — our inference, not a vendor statement
All versions
All versions

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

9.1CRITICALCISA-ADP
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-190CWE-704

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