How many zyxel usg flex 500h CVEs are in CISA KEV?

None of zyxel usg flex 500h's CVEs are currently listed in CISA's Known Exploited Vulnerabilities catalog.

Are there public exploits for zyxel usg flex 500h vulnerabilities?

Yes — 1 of zyxel usg flex 500h's CVEs have a known public exploit.

What are the most common weakness types in zyxel usg flex 500h CVEs?

zyxel usg flex 500h's CVEs most often map to these CWE weakness types: CWE-134 (Use of Externally-Controlled Format String), CWE-269 (Improper Privilege Management), CWE-476 (NULL Pointer Dereference), CWE-522 (Insufficiently Protected Credentials).

What is the average severity of zyxel usg flex 500h CVEs?

The average CVSS base score across zyxel usg flex 500h's scored CVEs is 7.2.

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zyxel

7 CVEs

zyxel usg flex 500h Vulnerabilities

Name: zyxel usg flex 500h vulnerability dataset (CVEs)
Creator: RadicalNotion.AI
License: https://creativecommons.org/licenses/by-nc/4.0/

CVE security advisories and vulnerability history for usg flex 500h by zyxel.

7

Total CVEs

Published

0

In CISA KEV

Exploited in the wild

1

Public exploits

PoC or exploit code

7.2

Avg CVSS

2024–2025

Last updated April 22, 2025

Overview

zyxel usg flex 500h has 7 published CVE records since 2024, of which 0 are in CISA's Known Exploited Vulnerabilities catalog and 1 have a known public exploit. The average CVSS base score across scored CVEs is 7.2.

This page aggregates every publicly disclosed vulnerability (CVE) affecting zyxel usg flex 500h, with a severity breakdown, the affected and patched versions, the most common weakness types, and the full CVE list.

Severity and exploitation

How the CVSS severity of zyxel usg flex 500h's CVEs breaks down, plus how many are exploited in the wild or have public exploit code.

Critical0

High4

Medium3

Low0

In CISA’s Known Exploited Vulnerabilities catalog

0

None of zyxel usg flex 500h's CVEs are currently listed in CISA's KEV catalog.

Public exploits

1

One of zyxel usg flex 500h's CVEs has a known public exploit available.

Affected versions and CVEs

Browse every zyxel usg flex 500h version named in a CVE, then pick one to see only the CVEs that affect it.

No specific affected versions are recorded for zyxel usg flex 500h; the CVEs below apply to the product without a version pin.

7 CVEs

Sort

Medium vulnerability · 2025-04-22
CVE-2025-1732CWE-269
Medium · CVSS 6.7
EPSS 0.2% (10th pct)2025-04-22
High vulnerability · 2025-04-22
CVE-2025-1731
Public exploit
Patch
CWE-732
High · CVSS 7.8
EPSS 0.9% (57th pct)2025-04-22
High vulnerability · 2024-10-22
CVE-2024-9677
Patch
CWE-522
High · CVSS 7.8
EPSS 0.2% (5th pct)2024-10-22
High vulnerability · 2024-02-20
CVE-2023-6764
Patch
CWE-134
High · CVSS 8.1
EPSS 0.9% (56th pct)2024-02-20
Medium vulnerability · 2024-02-20
CVE-2023-6399
Patch
CWE-134
Medium · CVSS 6.5
EPSS 0.6% (47th pct)2024-02-20
High vulnerability · 2024-02-20
CVE-2023-6398
Patch
CWE-78
High · CVSS 7.2
EPSS 1.3% (68th pct)2024-02-20
Medium vulnerability · 2024-02-20
CVE-2023-6397
Patch
CWE-476
Medium · CVSS 6.5
EPSS 0.3% (22th pct)2024-02-20

Common weakness types

The CWE weakness categories most often found in zyxel usg flex 500h CVEs. Follow any weakness for its full explanation.

Disclosure activity by year

How many zyxel usg flex 500h CVEs were published each year.

2024

5

2025

2

Other zyxel products

Browse vulnerabilities for other products by zyxel.

usg flex 100w54 CVEs usg flex 20054 CVEs usg flex 50054 CVEs usg flex 70054 CVEs usg flex 10050 CVEs USG FLEX series firmware50 CVEs ATP series firmware48 CVEs usg flex 50w45 CVEs

All zyxel vulnerabilities

Frequently asked questions

Common questions about zyxel usg flex 500h vulnerabilities.

How many CVEs does zyxel usg flex 500h have?: zyxel usg flex 500h has 7 published CVE records since 2024.
How many zyxel usg flex 500h CVEs are in CISA KEV?: None of zyxel usg flex 500h's CVEs are currently listed in CISA's Known Exploited Vulnerabilities catalog.
Are there public exploits for zyxel usg flex 500h vulnerabilities?: Yes — 1 of zyxel usg flex 500h's CVEs have a known public exploit.
What are the most common weakness types in zyxel usg flex 500h CVEs?: zyxel usg flex 500h's CVEs most often map to these CWE weakness types: CWE-134 (Use of Externally-Controlled Format String), CWE-269 (Improper Privilege Management), CWE-476 (NULL Pointer Dereference), CWE-522 (Insufficiently Protected Credentials).
What is the average severity of zyxel usg flex 500h CVEs?: The average CVSS base score across zyxel usg flex 500h's scored CVEs is 7.2.

References

Vulnerability data is sourced from the CVE Program; severity, KEV, and exploit signals are aggregated by RadicalNotion.AI.

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