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    CVE-2022-30065

    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.

    Published:May 18, 2022
    Last Modified:Jul 7, 2026
    EPS:May 18, 2022
    EPSS Score:0.01167
    CVSS Score:7.8

    Affected Products

    Vendor
    Busybox
    Product
    Busybox
    Vendor
    Siemens
    Product
    Scalance Sc622-2c
    Vendor
    Siemens
    Product
    Scalance Sc622-2c Firmware
    Vendor
    Siemens
    Product
    Scalance Sc626-2c
    Vendor
    Siemens
    Product
    Scalance Sc626-2c Firmware
    Vendor
    Siemens
    Product
    Scalance Sc632-2c
    Vendor
    Siemens
    Product
    Scalance Sc632-2c Firmware
    Vendor
    Siemens
    Product
    Scalance Sc636-2c
    Vendor
    Siemens
    Product
    Scalance Sc636-2c Firmware
    Vendor
    Siemens
    Product
    Scalance Sc642-2c
    Vendor
    Siemens
    Product
    Scalance Sc642-2c Firmware
    Vendor
    Siemens
    Product
    Scalance Sc646-2c
    Vendor
    Siemens
    Product
    Scalance Sc646-2c Firmware

    Exploits

    https://bugs.busybox.net/show_bug.cgi?id=14781https://bugs.busybox.net/show_bug.cgi?id=14781

    Common Weakness Enumeration

    CWE-416 Use After Free

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

    CVE-2026-76014 (CVSS 1.9) — A vulnerability has been found in BusyBox up to 1.30.1. This vulnerability affects unknown code of the file ne…
    CVE-2026-38755 (CVSS 2.9) — A heap overflow in the evalcommand() function (shell/ash.c) of Busybox v1.38.0 allows attackers to cause a Den…
    CVE-2026-38753 (CVSS 4.9) — A use-after-free in the awk_sub() function (editors/awk.c) of Busybox v1.38.0 allows attackers to cause a Deni…
    CVE-2026-38754 (CVSS 5.1) — A heap overflow in the ifsbreakup() function (shell/ash.c) of Busybox v1.38.0 allows attackers to cause a Deni…
    CVE-2026-38752 (CVSS 2.9) — A stack overflow in the evaluate() function (editors/awk.c) of BusyBox commit 371fe9 allows attackers to cause…
    CVE-2025-60876 (CVSS 6.5) — BusyBox wget thru 1.3.7 accepted raw CR (0x0D)/LF (0x0A) and other C0 control bytes in the HTTP request-target…
    CVE-2025-12221 (CVSS 2.1) — Busybox 1.31.1 - Multiple Known Vulnerabilities.This issue affects BLU-IC2: through 1.19.5; BLU-IC4: through 1…
    CVE-2025-12220 (CVSS 10) — Busybox 1.31.1 - Multiple Known Vulnerabilities.This issue affects BLU-IC2: through 1.19.5; BLU-IC4: through 1…
    CVE-2024-58251 (CVSS 2.5) — In netstat in BusyBox through 1.37.0, local users can launch of network application with an argv[0] containing…
    CVE-2025-46394 (CVSS 3.2) — In tar in BusyBox through 1.37.0, a TAR archive can have filenames hidden from a listing through the use of te…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High