Unrated severityNVD Advisory· Published Feb 9, 2021· Updated May 9, 2025
CVE-2021-26937
CVE-2021-26937
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
34- GNU Screen/GNU Screendescription
- osv-coords32 versionspkg:rpm/opensuse/screen&distro=openSUSE%20Leap%2015.2pkg:rpm/opensuse/screen&distro=openSUSE%20Tumbleweedpkg:rpm/suse/screen&distro=HPE%20Helion%20OpenStack%208pkg:rpm/suse/screen&distro=SUSE%20Enterprise%20Storage%206pkg:rpm/suse/screen&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP1-ESPOSpkg:rpm/suse/screen&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP1-LTSSpkg:rpm/suse/screen&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015-ESPOSpkg:rpm/suse/screen&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015-LTSSpkg:rpm/suse/screen&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP2pkg:rpm/suse/screen&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-BCLpkg:rpm/suse/screen&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-LTSSpkg:rpm/suse/screen&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3-BCLpkg:rpm/suse/screen&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3-LTSSpkg:rpm/suse/screen&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP4-LTSSpkg:rpm/suse/screen&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5pkg:rpm/suse/screen&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP1-BCLpkg:rpm/suse/screen&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP1-LTSSpkg:rpm/suse/screen&distro=SUSE%20Linux%20Enterprise%20Server%2015-LTSSpkg:rpm/suse/screen&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP2pkg:rpm/suse/screen&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP3pkg:rpm/suse/screen&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP4pkg:rpm/suse/screen&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP5pkg:rpm/suse/screen&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015pkg:rpm/suse/screen&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP1pkg:rpm/suse/screen&distro=SUSE%20Manager%20Proxy%204.0pkg:rpm/suse/screen&distro=SUSE%20Manager%20Retail%20Branch%20Server%204.0pkg:rpm/suse/screen&distro=SUSE%20Manager%20Server%204.0pkg:rpm/suse/screen&distro=SUSE%20OpenStack%20Cloud%207pkg:rpm/suse/screen&distro=SUSE%20OpenStack%20Cloud%208pkg:rpm/suse/screen&distro=SUSE%20OpenStack%20Cloud%209pkg:rpm/suse/screen&distro=SUSE%20OpenStack%20Cloud%20Crowbar%208pkg:rpm/suse/screen&distro=SUSE%20OpenStack%20Cloud%20Crowbar%209
< 4.6.2-lp152.6.3.1+ 31 more
- (no CPE)range: < 4.6.2-lp152.6.3.1
- (no CPE)range: < 4.9.0-1.1
- (no CPE)range: < 4.0.4-23.6.1
- (no CPE)range: < 4.6.2-5.3.1
- (no CPE)range: < 4.6.2-5.3.1
- (no CPE)range: < 4.6.2-5.3.1
- (no CPE)range: < 4.6.2-5.3.1
- (no CPE)range: < 4.6.2-5.3.1
- (no CPE)range: < 4.6.2-5.3.1
- (no CPE)range: < 4.0.4-23.6.1
- (no CPE)range: < 4.0.4-23.6.1
- (no CPE)range: < 4.0.4-23.6.1
- (no CPE)range: < 4.0.4-23.6.1
- (no CPE)range: < 4.0.4-23.6.1
- (no CPE)range: < 4.0.4-23.6.1
- (no CPE)range: < 4.6.2-5.3.1
- (no CPE)range: < 4.6.2-5.3.1
- (no CPE)range: < 4.6.2-5.3.1
- (no CPE)range: < 4.0.4-23.6.1
- (no CPE)range: < 4.0.4-23.6.1
- (no CPE)range: < 4.0.4-23.6.1
- (no CPE)range: < 4.0.4-23.6.1
- (no CPE)range: < 4.6.2-5.3.1
- (no CPE)range: < 4.6.2-5.3.1
- (no CPE)range: < 4.6.2-5.3.1
- (no CPE)range: < 4.6.2-5.3.1
- (no CPE)range: < 4.6.2-5.3.1
- (no CPE)range: < 4.0.4-23.6.1
- (no CPE)range: < 4.0.4-23.6.1
- (no CPE)range: < 4.0.4-23.6.1
- (no CPE)range: < 4.0.4-23.6.1
- (no CPE)range: < 4.0.4-23.6.1
Patches
Vulnerability mechanics
References
9- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GNWBOIDEPOEQS5RMQVMFKHKXJCGNYWBL/mitrevendor-advisoryx_refsource_FEDORA
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JJWLXP45POUUYBJRRWPVAWNZDJTLYWVM/mitrevendor-advisoryx_refsource_FEDORA
- security.gentoo.org/glsa/202105-11mitrevendor-advisoryx_refsource_GENTOO
- www.debian.org/security/2021/dsa-4861mitrevendor-advisoryx_refsource_DEBIAN
- www.openwall.com/lists/oss-security/2021/02/09/8mitremailing-listx_refsource_MLIST
- ftp.gnu.org/gnu/screen/mitrex_refsource_MISC
- lists.debian.org/debian-lts-announce/2021/02/msg00031.htmlmitremailing-listx_refsource_MLIST
- lists.gnu.org/archive/html/screen-devel/2021-02/msg00000.htmlmitrex_refsource_MISC
- www.openwall.com/lists/oss-security/2021/02/09/3mitrex_refsource_MISC
News mentions
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