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vulnerability
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CVE-2021-43521
Component Overview
Vulnerability Overview
Name
CVE-2021-43521
Source
NVD (
link
)
Debian (
link
)
Description
A Buffer Overflow vulnerability exists in zlog 1.2.15 via zlog_conf_build_with_file in src/zlog/src/conf.c.
CWEs
CWE-787
Published Date
Apr 8, 2022
Updated Date
Jun 17, 2026
Workaround
-
Advisories
https://github.com/HardySimpson/zlog
Product
https://github.com/HardySimpson/zlog/issues/206
Exploit
https://github.com/HardySimpson/zlog
Product
https://github.com/HardySimpson/zlog/issues/206
Exploit
Analysis
#
Affected Component
Analysis
zlog
Patched
Vulnerability Ratings
#
7.5
CVSSv31
5
CVSSv2
Others affected components
#
Name
Project
Project Version
Version
Status
zlog
buildroot
2025.02.x
1.2.18
Not Affected
zlog
buildroot
master
1.2.18
Not Affected
zlog
openwrt
master
1.2.18-r1
Not Affected
zlog
openwrt
openwrt-25.12
1.2.17-r3
Not Affected
zlog
yocto
master
1.2.18
Not Affected
zlog
yocto
scarthgap
1.2.16
Not Affected
Resolved with patches
#
zlog (yocto:kirkstone)
#
Title
Author
Resolve
1
Fix stack-buffer-overflow at zlog_conf_build_with_file
XiangfeiCH <chenthrone@163.com>
CVE-2021-43521