01 Record

CVE-2021-35942

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

CriticalPUBLISHEDCNA: mitre

CNA base score9.1 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

View raw JSON

02 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

03 Exploitation and scoring

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

2.68% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 84.5% of scored records. A rank, not a probability.

NVD base score

9.1 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

NVD analysis status

Modified. NVD last modified this record on 2026-06-17.

Red Hat severity

Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published

2021-07-22 00:00Z5 YR AGO

Last updated

2026-02-13 20:00Z6 MO AGO

Reserved

2021-06-29

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Critical (CVSS 9.1)

CNA CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

Weaknesses

CWE-704Incorrect Type Conversion or CastClass
CWE-190Integer Overflow or WraparoundBase

Data version

5.2

Document digest

d840d326a73128f3a08fe17fafc411efceff486b879558d8c72a78879197d518

05 Affected products

VendorProductVersionsPlatforms

debiandebian_linuxNot specified—

gnuglibcNot specified—

netappactive_iq_unified_managerNot specified—

netappe-series_santricity_os_controllerNot specified—

netapphci_management_nodeNot specified—

netappontap_select_deploy_administration_utilityNot specified—

netappsolidfireNot specified—

redhatenterprise_linuxNot specified—

06 References

sourceware.orghttps://sourceware.org/glibc/wiki/Security%20Exceptions
sourceware.orghttps://sourceware.org/bugzilla/show_bug.cgi?id=28011
sourceware.orghttps://sourceware.org/git/?p=glibc.git%3Ba=commit%3Bh=5adda61f62b77384718b4c0d8336ade8f2b4b35c
security.netapp.comhttps://security.netapp.com/advisory/ntap-20210827-0005/
security.gentoo.orgGLSA-202208-24https://security.gentoo.org/glsa/202208-24vendor-advisory
lists.debian.org[debian-lts-announce] 20221017 [SECURITY] [DLA 3152-1] glibc security updatehttps://lists.debian.org/debian-lts-announce/2022/10/msg00021.htmlmailing-list

01 Record index

CVE-2021-35942

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References

02 Records

CVE-2021-35942

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References