How severe is CVE-2024-6342?

CVE-2024-6342 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2024-6342 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (80th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-6342?

CVE-2024-6342 primarily affects Zyxel Nas326 Firmware. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2024-6342?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2024-6342 have an EU (EUVD) identifier?

Yes. CVE-2024-6342 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-47455.

When was CVE-2024-6342 published?

CVE-2024-6342 was published on 2024-09-10 and last updated on 2026-06-17.

CVE-2024-6342

CVE-2024-6342 is a critical-severity vulnerability in Zyxel Nas326 Firmware with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-78.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 2% (80th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-47455
Weakness: CWE-78
Affected product: Zyxel Nas326 Firmware
Published: 2024-09-10
Last modified: 2026-06-17

Description

**UNSUPPORTED WHEN ASSIGNED** A command injection vulnerability in the export-cgi program of Zyxel NAS326 firmware versions through V5.21(AAZF.18)C0 and NAS542 firmware versions through V5.21(ABAG.15)C0 could allow an unauthenticated attacker to execute some operating system (OS) commands by sending a crafted HTTP POST request.

Frequently asked questions

What is CVE-2024-6342?: **UNSUPPORTED WHEN ASSIGNED** A command injection vulnerability in the export-cgi program of Zyxel NAS326 firmware versions through V5.21(AAZF.18)C0 and NAS542 firmware versions through V5.21(ABAG.15)C0 could allow an unauthenticated attacker to execute some operating system (OS) commands by sending a crafted HTTP POST request.
How severe is CVE-2024-6342?: CVE-2024-6342 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2024-6342 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (80th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-6342?: CVE-2024-6342 primarily affects Zyxel Nas326 Firmware. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2024-6342?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2024-6342 have an EU (EUVD) identifier?: Yes. CVE-2024-6342 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-47455.
When was CVE-2024-6342 published?: CVE-2024-6342 was published on 2024-09-10 and last updated on 2026-06-17.

References

https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-os-command-injection-vulnerability-in-nas-products-09-10-2024

Affected products (4)

cpe:2.3:o:zyxel:nas326_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:nas326_firmware:5.21\(aazf.18\)c0:-:*:*:*:*:*:*
cpe:2.3:o:zyxel:nas542_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:nas542_firmware:5.21\(abag.15\)c0:-:*:*:*:*:*:*

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