What’s Vulnerable › Vulnerabilities

CVE-2021-43521

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.3% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2022-04-08 · updated 2026-06-17
• Weakness: CWE-787

Description

A Buffer Overflow vulnerability exists in zlog 1.2.15 via zlog_conf_build_with_file in src/zlog/src/conf.c.

Affected products

• Zlog Project Zlog: 1.2.15

References

• https://github.com/HardySimpson/zlog
• https://github.com/HardySimpson/zlog/issues/206
• https://github.com/HardySimpson/zlog
• https://github.com/HardySimpson/zlog/issues/206

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