CVE-2021-26937
Detail
Modified This CVE record has been updated after NVD enrichment efforts were completed. Enrichment data supplied by the NVD may require amendment due to these changes.
Description
encoding.c in GNU Screen through 4.8.0 allows remote attackers to cause a denial of service (invalid write access and application crash) or possibly have unspecified other impact via a crafted UTF-8 character sequence.
Metrics
CVSS Version 4.0
CVSS Version 3.x
CVSS Version 2.0
NVD enrichment efforts reference publicly available information to associate
vector strings. CVSS information contributed by other sources is also
displayed.
CVSS 4.0 Severity and Vector Strings:
NVD assessment
not yet provided.
CVSS 3.x Severity and Vector Strings:
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0 Severity and Vector Strings:
Vector:
(AV:N/AC:L/Au:N/C:P/I:P/A:P)
References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving NIST webspace.
We have provided these links to other web sites because they
may have information that would be of interest to you. No
inferences should be drawn on account of other sites being
referenced, or not, from this page. There may be other web
sites that are more appropriate for your purpose. NIST does
not necessarily endorse the views expressed, or concur with
the facts presented on these sites. Further, NIST does not
endorse any commercial products that may be mentioned on
these sites. Please address comments about this page to [email protected]
Weakness Enumeration
CWE-ID
CWE Name
Source
CWE-88
Improper Neutralization of Argument Delimiters in a Command ('Argument Injection')
NIST
Change History
14 change records found show changes
CVE Modified by CVE 5/09/2025 4:15:36 PM
Action
Type
Old Value
New Value
Added
Reference
https://security.netapp.com/advisory/ntap-20250509-0004/
CVE Modified by CVE 11/21/2024 12:57:05 AM
Action
Type
Old Value
New Value
Added
Reference
http://www.openwall.com/lists/oss-security/2021/02/09/8
Added
Reference
https://ftp.gnu.org/gnu/screen/
Added
Reference
https://lists.debian.org/debian-lts-announce/2021/02/msg00031.html
Added
Reference
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GNWBOIDEPOEQS5RMQVMFKHKXJCGNYWBL/
Added
Reference
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JJWLXP45POUUYBJRRWPVAWNZDJTLYWVM/
Added
Reference
https://lists.gnu.org/archive/html/screen-devel/2021-02/msg00000.html
Added
Reference
https://security.gentoo.org/glsa/202105-11
Added
Reference
https://www.debian.org/security/2021/dsa-4861
Added
Reference
https://www.openwall.com/lists/oss-security/2021/02/09/3
CVE Modified by MITRE 5/14/2024 4:36:54 AM
Action
Type
Old Value
New Value
CVE Modified by MITRE 11/06/2023 10:31:50 PM
Action
Type
Old Value
New Value
Added
Reference
MITRE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GNWBOIDEPOEQS5RMQVMFKHKXJCGNYWBL/ [No types assigned]
Added
Reference
MITRE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JJWLXP45POUUYBJRRWPVAWNZDJTLYWVM/ [No types assigned]
Removed
Reference
MITRE https://lists.fedoraproject.org/archives/list/[email protected] /message/GNWBOIDEPOEQS5RMQVMFKHKXJCGNYWBL/
Removed
Reference
MITRE https://lists.fedoraproject.org/archives/list/[email protected] /message/JJWLXP45POUUYBJRRWPVAWNZDJTLYWVM/
Modified Analysis by NIST 5/06/2022 4:59:27 PM
Action
Type
Old Value
New Value
Changed
Reference Type
https://security.gentoo.org/glsa/202105-11 No Types Assigned
https://security.gentoo.org/glsa/202105-11 Third Party Advisory
CVE Modified by MITRE 5/26/2021 6:15:08 AM
Action
Type
Old Value
New Value
Added
Reference
https://security.gentoo.org/glsa/202105-11 [No Types Assigned]
Modified Analysis by NIST 3/15/2021 1:19:53 PM
Action
Type
Old Value
New Value
Added
CPE Configuration
OR
*cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*
*cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
Changed
Reference Type
https://lists.fedoraproject.org/archives/list/[email protected] /message/GNWBOIDEPOEQS5RMQVMFKHKXJCGNYWBL/ No Types Assigned
https://lists.fedoraproject.org/archives/list/[email protected] /message/GNWBOIDEPOEQS5RMQVMFKHKXJCGNYWBL/ Mailing List, Third Party Advisory
Changed
Reference Type
https://lists.fedoraproject.org/archives/list/[email protected] /message/JJWLXP45POUUYBJRRWPVAWNZDJTLYWVM/ No Types Assigned
https://lists.fedoraproject.org/archives/list/[email protected] /message/JJWLXP45POUUYBJRRWPVAWNZDJTLYWVM/ Mailing List, Third Party Advisory
CVE Modified by MITRE 3/04/2021 5:15:14 PM
Action
Type
Old Value
New Value
Added
Reference
https://lists.fedoraproject.org/archives/list/[email protected] /message/GNWBOIDEPOEQS5RMQVMFKHKXJCGNYWBL/ [No Types Assigned]
CVE Modified by MITRE 3/03/2021 8:15:12 PM
Action
Type
Old Value
New Value
Added
Reference
https://lists.fedoraproject.org/archives/list/[email protected] /message/JJWLXP45POUUYBJRRWPVAWNZDJTLYWVM/ [No Types Assigned]
Modified Analysis by NIST 2/24/2021 3:21:41 PM
Action
Type
Old Value
New Value
Added
CPE Configuration
OR
*cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
*cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
Changed
Reference Type
http://www.openwall.com/lists/oss-security/2021/02/09/8 Exploit, Third Party Advisory
http://www.openwall.com/lists/oss-security/2021/02/09/8 Exploit, Mailing List, Third Party Advisory
Changed
Reference Type
https://lists.debian.org/debian-lts-announce/2021/02/msg00031.html No Types Assigned
https://lists.debian.org/debian-lts-announce/2021/02/msg00031.html Mailing List, Third Party Advisory
Changed
Reference Type
https://www.debian.org/security/2021/dsa-4861 No Types Assigned
https://www.debian.org/security/2021/dsa-4861 Third Party Advisory
CVE Modified by MITRE 2/22/2021 10:15:12 AM
Action
Type
Old Value
New Value
Added
Reference
https://www.debian.org/security/2021/dsa-4861 [No Types Assigned]
CVE Modified by MITRE 2/19/2021 4:15:12 PM
Action
Type
Old Value
New Value
Added
Reference
https://lists.debian.org/debian-lts-announce/2021/02/msg00031.html [No Types Assigned]
Initial Analysis by NIST 2/17/2021 10:21:13 AM
Action
Type
Old Value
New Value
Added
CVSS V3.1
NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Added
CVSS V2
NIST (AV:N/AC:L/Au:N/C:P/I:P/A:P)
Added
CWE
NIST CWE-88
Added
CPE Configuration
OR
*cpe:2.3:a:gnu:screen:*:*:*:*:*:*:*:* versions up to (including) 4.8.0
Changed
Reference Type
http://www.openwall.com/lists/oss-security/2021/02/09/8 No Types Assigned
http://www.openwall.com/lists/oss-security/2021/02/09/8 Exploit, Third Party Advisory
Changed
Reference Type
https://ftp.gnu.org/gnu/screen/ No Types Assigned
https://ftp.gnu.org/gnu/screen/ Product
Changed
Reference Type
https://lists.gnu.org/archive/html/screen-devel/2021-02/msg00000.html No Types Assigned
https://lists.gnu.org/archive/html/screen-devel/2021-02/msg00000.html Exploit, Mailing List, Vendor Advisory
Changed
Reference Type
https://www.openwall.com/lists/oss-security/2021/02/09/3 No Types Assigned
https://www.openwall.com/lists/oss-security/2021/02/09/3 Exploit, Mailing List, Third Party Advisory
CVE Modified by MITRE 2/09/2021 8:15:14 PM
Action
Type
Old Value
New Value
Added
Reference
http://www.openwall.com/lists/oss-security/2021/02/09/8 [No Types Assigned]
Quick Info
CVE Dictionary Entry: CVE-2021-26937 NVD
Published Date: 02/09/2021 NVD
Last Modified: 05/09/2025
Source: MITRE
) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.
