CVE-2022-45440

mediumpriority · track · 18EPSS 0.002 · 16 %ileDEEURUUS
grimoire priorityP3 · Track
Exploitable?
—
no known exploitation
Likely / severe?
0.25% (16th) EPSS
CVSS 4.4 · medium
Is it mine?
4 products
Check your exposure
Who says so?
5 sources
cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-27

A vulnerability exists in the FTP server of the Zyxel AX7501-B0 firmware prior to V5.17(ABPC.3)C0, which processes symbolic links on external storage media. A local authenticated attacker with administrator privileges could abuse this vulnerability to access the root file system by creating a symbolic link on external storage media, such as a USB flash drive, and then logging into the FTP server on a vulnerable device.

01

cvss

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

4.4
010

base score 0–10 · higher = more severe · hover a vector to decode

v3.14.4mediumCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:Nprimary · NVD / NIST USexploitability 0.8 · impact 3.6
v3.14.4mediumAV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:Nsecondary · FSTEC (BDU) RU
v3.14.4mediumCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:Nsecondary · ENISA EU
v3.14.4mediumCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:Nsecondary · security@zyxel.com.twexploitability 0.8 · impact 3.6
v3.14.4mediumCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N/E:Hsecondary · CVSS-BT (t0sche)
02

ssvc

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

Trackcoordinatorcisa_ssvcUS
03

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-552USCWE-59US
04

affected products (4)

Products and version ranges known to be affected.

05

advisories (1)

Vendor and ecosystem advisories describing this.

  • WID-SEC-W-2023-1091Zyxel Firewall Produkte: Mehrere SchwachstellenDeutsch2022-02-15csaf · cert_bundDE

    Ein Angreifer kann mehrere Schwachstellen in Zyxel Firewall Produkten ausnutzen, um beliebigen Code auszuführen, Sicherheitsmaßnahmen zu umgehen, vertrauliche Informationen offenzulegen, seine Privilegien zu erweitern und einen Cross-Site-Scripting-Angriff durchzuführen.

06

also known as (4)

Other names and identifiers for this entity.

07

sources

Which sources assert this record, and when.

cnnvdenisa_euvdfstec_bducert_bundnvdNVDCVE.orgMITRE
published 2023-01-17modified 2026-06-17
08

references (5)

External citations — patches, advisories, analysis.

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