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CVE-2021-3711

SM2 Decryption Buffer Overflow

Published: Aug 24, 2021Updated: Nov 21, 2024 Sources: CVE List NVD GHSA BDU csafCWE-120
NVD MITRE
9.8CVSSCRITICAL
EPSS Score
87.8%
Top 0.3%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

Siemens BFCClient contains multiple vulnerabilities in the integrated OpenSSL component that could allow an attacker to read memory contents, to change the application behaviour or to create a denial of service condition. Siemens has released a new version for BFCClient and recommends to update to the latest version.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-120

Affected Products

openssl-srccrates.ioOSS Libraries
OpenSSLOpenSSLOSS Libraries
opensslopensslOSS Libraries
debian linuxdebian
On-premOS
Operating Systems / linux-distro
active iq unified managernetappHardware Firmware
crates.iopackage-ecosystemOSS Libraries
openssloss-projectUSOSS Librariesaka open ssl
debianoss-projectGBOperating Systemsaka debian gnu/linux
netappcommercialUSHardware Firmware
and 42 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

MITRE ATT&CK

2 techniques
Initial Access
Privilege Escalation
View detailed technique mapping

References

https://cert-portal.siemens.com/productcert/csaf/ssa-028723.json
cert-portal.siemens.com
https://cert-portal.siemens.com/productcert/html/ssa-028723.html
cert-portal.siemens.com
https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/OT/white/2025/icsa-25-226-21.json
raw.githubusercontent.com
and 50 more references View all →

Timeline

Published
Aug 24, 2021
Last Updated
Nov 21, 2024

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