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CVE-2021-42374

An out-of-bounds heap read in Busybox's unlzma applet leads to information leak and denial of service when crafted LZMA-compressed input is decompressed. This can be triggered by any applet/format ...

Published: Nov 15, 2021Updated: Nov 3, 2025 Sources: CVE List NVD BDU csafCWE-125
NVD MITRE
5.3CVSSMEDIUM
EPSS Score
0.6%
Top 57.0%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

Multiple vulnerabilities have been identified in the BIOS of the SIMATIC S7-1500 TM MFP before V1.3.0. Siemens has released a new version for SIMATIC S7-1500 TM MFP - BIOS and recommends to update to the latest version.

CVSS Vector Breakdown

AV:LAC:HPR:LUI:NS:UC:LI:NA:H
Exploitability
AV:LAttack Vector
Local
AC:HAttack Complexity
High
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:LConfidentiality
Low
I:NIntegrity
None
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-125

Affected Products

Debian GNU/LinuxСообщество свободного программного обеспечения
On-premOS
Operating Systems / linux-distro
РЕД ОСООО «Ред Софт»
On-premOS
Operating Systems / linux-distro
BusyBoxСообщество свободного программного обеспечения
LibraryLibrary
OSS Libraries / generic-library
Astra Linux Special EditionООО «РусБИТех-Астра»
On-premOS
Operating Systems / linux-distro
ОС ТД АИС ФССП РоссииФССП России
On-prem
Operating Systems / linux-distro
сообщество свободного программного обеспеченияoss-projectOperating Systemsaka сообщество свободного программного обеспечения, fsf
ооо «ред софт»commercialRUOperating Systemsaka red soft
ооо «русбитех-астра»commercialRUOperating Systemsaka rusbitech-astra
фссп россииRUOperating Systems
and 13 more affected products View all →

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

Official Patch Available
Workaround Available

MITRE ATT&CK

1 technique
Collection
View detailed technique mapping

References

https://redos.red-soft.ru/support/secure/
redos.red-soft.ru
https://www.cybersecurity-help.cz/vdb/SB2021120809
cybersecurity-help.cz
https://security-tracker.debian.org/tracker/CVE-2021-42374
security-tracker.debian.org
and 23 more references View all →

Timeline

Published
Nov 15, 2021
Last Updated
Nov 3, 2025

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