CVE-2022-38547

highpriority · track · 30EPSS 0.028 · 87 %ileDEEURUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

2.83% (87th) EPSS

CVSS 7.2 · high

Is it mine?

34 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · fstec_bdu · nvd

EPSS · scored 2026-10-27

A post-authentication command injection vulnerability in the CLI command of Zyxel ZyWALL/USG series firmware versions 4.20 through 4.72, VPN series firmware versions 4.30 through 5.32, USG FLEX series firmware versions 4.50 through 5.32, and ATP series firmware versions 4.32 through 5.32, which could allow an authenticated attacker with administrator privileges to execute OS commands.

cvss

Technical severity, 0–10. One row per scoring source.

7.2

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.6–7.2

v3.17.2highCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 1.2 · impact 5.9

v3.17.2highAV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU

v3.17.2highCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:Hsecondary · ENISA EU

v3.17.2highCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:Hsecondary · security@zyxel.com.twexploitability 1.2 · impact 5.9

v3.16.6mediumCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: no · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-78USprimaryCWE-78US

affected products (34)

Products and version ranges known to be affected.

Zyxel ATP series firmware≤ 4.32 through 5.32enisa_euvdEU
Zyxel USG FLEX series firmware≤ 4.50 through 5.32enisa_euvdEU
Zyxel VPN series Firmware≤ 4.30 through 5.32enisa_euvdEU
Zyxel ZyWALL/USG series firmware≤ 4.20 through 4.72enisa_euvdEU
Zyxel Communications Corp. ATP≤ ZLD V5.35fstec_bduRU
Zyxel Communications Corp. USG≤ ZLD V4.73fstec_bduRU
Zyxel Communications Corp. USG FLEX≤ ZLD 5.35fstec_bduRU
Zyxel Communications Corp. VPN≤ ZLD V5.35fstec_bduRU
Zyxel Communications Corp. ZyWALL≤ ZLD V4.73fstec_bduRU
zyxel atp100 firmware4.32 → 5.32nvdUScpe:2.3:o:zyxel:atp100_firmware:*:*:*:*:*:*:*:*
zyxel atp100w firmware4.32 → 5.32nvdUScpe:2.3:o:zyxel:atp100w_firmware:*:*:*:*:*:*:*:*
zyxel atp200 firmware4.32 → 5.32nvdUScpe:2.3:o:zyxel:atp200_firmware:*:*:*:*:*:*:*:*
zyxel atp500 firmware4.32 → 5.32nvdUScpe:2.3:o:zyxel:atp500_firmware:*:*:*:*:*:*:*:*
zyxel atp700 firmware4.32 → 5.32nvdUScpe:2.3:o:zyxel:atp700_firmware:*:*:*:*:*:*:*:*
zyxel atp800 firmware4.32 → 5.32nvdUScpe:2.3:o:zyxel:atp800_firmware:*:*:*:*:*:*:*:*
zyxel usg flex 100 firmware4.50 → 5.32nvdUScpe:2.3:o:zyxel:usg_flex_100_firmware:*:*:*:*:*:*:*:*
zyxel usg flex 100w firmware4.50 → 5.32nvdUScpe:2.3:o:zyxel:usg_flex_100w_firmware:*:*:*:*:*:*:*:*
zyxel usg flex 200 firmware4.50 → 5.32nvdUScpe:2.3:o:zyxel:usg_flex_200_firmware:*:*:*:*:*:*:*:*
zyxel usg flex 50 firmware4.50 → 5.32nvdUScpe:2.3:o:zyxel:usg_flex_50_firmware:*:*:*:*:*:*:*:*
zyxel usg flex 500 firmware4.50 → 5.32nvdUScpe:2.3:o:zyxel:usg_flex_500_firmware:*:*:*:*:*:*:*:*

showing 20 of 34

advisories (1)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2023-0298Zyxel Firewall: Schwachstelle ermöglicht CodeausführungDeutsch2023-02-06csaf · cert_bundDE
Ein entfernter, authentisierter Angreifer kann eine Schwachstelle in Zyxel Firewall ausnutzen, um beliebigen Programmcode auszuführen.

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu nvd cert_bund NVD CVE.org MITRE

published 2023-02-07modified 2026-06-17

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references (4)

External citations — patches, advisories, analysis.

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