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Fencer Vulns
high 7.8

CVE-2022-30065 json

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 patter…

published 2022-05-18 4 y ago modified 2026-07-07 4 mo ago also EUVD-2022-35279

cvss
7.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.3%
EPSS 1.3% chance of exploitation in 30 days, percentile 69%
public exploits
0
none known

Summary

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.

Patch / fix

  • 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
  • busybox Debian 14, Debian 13 1:1.36.1-1

debian advisories DEBIAN-CVE-2022-30065

  • busybox SLES for SAP 12 SP5, SLES 12 SP5 1.35.0-4.6.2
  • busybox SLE Module for Basesystem 15 SP4, openSUSE Leap 15.4 1.35.0-150400.3.8.1
  • busybox-links openSUSE Leap 15.4 1.35.0-150400.4.3.14
  • busybox SLE Module for Basesystem 15 SP3, openSUSE Leap 15.3 1.35.0-150000.4.17.1

suse advisories SUSE-SU-2022:4372-1SUSE-SU-2022:4371-1SUSE-SU-2022:4309-1

  • busybox openSUSE Tumbleweed 1.35.0-9.1

opensuse advisories openSUSE-SU-2024:12536-1

  • busybox Alpine 3.13 1.32.1-r9
  • busybox Alpine 3.14 1.33.0-r8
  • busybox Alpine 3.15 1.34.0-r6
  • busybox Alpine 3.16 1.35.0-r15
  • busybox Alpine 3.24, Alpine 3.23, Alpine 3.22 +5 more 1.35.0-r17

alpine advisories ALPINE-CVE-2022-30065

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • busybox CBL-Mariner 2.0 1.35.0-3

azure linux advisories AZL-9815

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2022-30065 updated cvss 6.2

busybox: A use-after-free in Busybox's awk applet leads to denial of service

  • Red Hat Enterprise Linux 6 busybox, busybox-petitboot
    affected: no fix planned “Out of support scope”

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

cisa ICSA-23-103-09 updated cvss 7.8

Siemens SCALANCE XCM332

Facts from CISA's republication of the vendor's own advisory (CSAF); the linked advisory is the authoritative source. CISA notification · csaf

cisa ICSA-23-166-10 updated cvss 7.8

Siemens SIMATIC S7-1500 TM MFP BIOS

Facts from CISA's republication of the vendor's own advisory (CSAF); the linked advisory is the authoritative source. CISA notification · csaf

cisa ICSA-23-075-01 updated cvss 7.8

Siemens SCALANCE, RUGGEDCOM Third-Party

  • Siemens RUGGEDCOM RM1224 LTE(4G) EU (6GK6108-4AM00-2BA2) <V7.2 Siemens RUGGEDCOM RM1224 LTE(4G) NAM (6GK6108-4AM00-2DA2) <V7.2 Siemens SCALANCE M804PB (6GK5804-0AP00-2AA2) <V7.2 Siemens SCALANCE M812-1 ADSL-Router (Annex A) (6GK5812-1AA00-2AA2) <V7.2 Siemens SCALANCE M812-1 ADSL-Router (Annex B) (6GK5812-1BA00-2AA2) <V7.2 Siemens SCALANCE M816-1 ADSL-Router (Annex A) (6GK5816-1AA00-2AA2) <V7.2
    +14 more products
    Siemens SCALANCE M816-1 ADSL-Router (Annex B) (6GK5816-1BA00-2AA2) <V7.2 Siemens SCALANCE M826-2 SHDSL-Router (6GK5826-2AB00-2AB2) <V7.2 Siemens SCALANCE M874-2 (6GK5874-2AA00-2AA2) <V7.2 Siemens SCALANCE M874-3 (6GK5874-3AA00-2AA2) <V7.2 Siemens SCALANCE M876-3 (EVDO) (6GK5876-3AA02-2BA2) <V7.2 Siemens SCALANCE M876-3 (ROK) (6GK5876-3AA02-2EA2) <V7.2 Siemens SCALANCE M876-4 (6GK5876-4AA10-2BA2) <V7.2 Siemens SCALANCE M876-4 (EU) (6GK5876-4AA00-2BA2) <V7.2 Siemens SCALANCE M876-4 (NAM) (6GK5876-4AA00-2DA2) <V7.2 Siemens SCALANCE MUM853-1 (EU) (6GK5853-2EA00-2DA1) <V7.2 Siemens SCALANCE MUM856-1 (EU) (6GK5856-2EA00-3DA1) <V7.2 Siemens SCALANCE MUM856-1 (RoW) (6GK5856-2EA00-3AA1) <V7.2 Siemens SCALANCE S615 (6GK5615-0AA00-2AA2) <V7.2 Siemens SCALANCE S615 EEC (6GK5615-0AA01-2AA2) <V7.2
    affected: fixed in V7.2 support.industry.siemens.com

Facts from CISA's republication of the vendor's own advisory (CSAF); the linked advisory is the authoritative source. CISA notification · csaf

cisa ICSA-22-349-18 updated cvss 7.8

Siemens SCALANCE SC-600 Family

  • Siemens SCALANCE SC622-2C (6GK5622-2GS00-2AC2) <V3.0 Siemens SCALANCE SC626-2C (6GK5626-2GS00-2AC2) <V3.0 Siemens SCALANCE SC632-2C (6GK5632-2GS00-2AC2) <V3.0 Siemens SCALANCE SC636-2C (6GK5636-2GS00-2AC2) <V3.0 Siemens SCALANCE SC642-2C (6GK5642-2GS00-2AC2) <V3.0 Siemens SCALANCE SC646-2C (6GK5646-2GS00-2AC2) <V3.0
    affected: fixed in V3.0 support.industry.siemens.com

Facts from CISA's republication of the vendor's own advisory (CSAF); the linked advisory is the authoritative source. CISA notification · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
4 mo ago

Exploit prediction

1.25% chance of exploitation in the next 30 days, higher than 69% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • bugs.busybox.net https://bugs.busybox.net/show_bug.cgi?id=14781 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CISA ADP 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CNA 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD 2.0 6.8 AV:N/AC:M/Au:N/C:P/I:P/A:P

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.