What’s Vulnerable › Vulnerabilities

CVE-2022-30065

• Severity: high (CVSS 7.8 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: 2022-05-18 · updated 2026-07-07
• Weakness: CWE-416

Description

A use-after-free in Busybox 1.35-x's awk applet leads to denial of service and possibly code execution when processing a crafted awk pattern in the copyvar function.

Affected products

• busybox: 1.35.0
• Siemens Scalance Sc622-2C Firmware: before 3.0 — fixed in 3.0
• Siemens Scalance Sc626-2C Firmware: before 3.0 — fixed in 3.0
• Siemens Scalance Sc632-2C Firmware: before 3.0 — fixed in 3.0
• Siemens Scalance Sc636-2C Firmware: before 3.0 — fixed in 3.0
• Siemens Scalance Sc642-2C Firmware: before 3.0 — fixed in 3.0
• Siemens Scalance Sc646-2C Firmware: before 3.0 — fixed in 3.0

How to fix

Upgrade to a fixed version: Siemens Scalance Sc622-2C Firmware 3.0; Siemens Scalance Sc626-2C Firmware 3.0; Siemens Scalance Sc632-2C Firmware 3.0; Siemens Scalance Sc636-2C Firmware 3.0; Siemens Scalance Sc642-2C Firmware 3.0; Siemens Scalance Sc646-2C Firmware 3.0. Check the vendor advisory for mitigations.

References

• https://bugs.busybox.net/show_bug.cgi?id=14781
• https://cert-portal.siemens.com/productcert/pdf/ssa-333517.pdf
• https://bugs.busybox.net/show_bug.cgi?id=14781
• https://cert-portal.siemens.com/productcert/pdf/ssa-333517.pdf

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