How severe is CVE-2026-4619?

CVE-2026-4619 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-2026-4619 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (41st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-4619?

CVE-2026-4619 affects Nec Aterm Wx3600hp Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-4619?

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-2026-4619 have an EU (EUVD) identifier?

Yes. CVE-2026-4619 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-16586.

When was CVE-2026-4619 published?

CVE-2026-4619 was published on 2026-03-27 and last updated on 2026-06-17.

CVE-2026-4619

CVE-2026-4619 is a critical-severity vulnerability in Nec Aterm Wx3600hp 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-22.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v4: 6.0
EPSS exploit prediction: 0% (41st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-16586
Weakness: CWE-22
Affected product: Nec Aterm Wx3600hp Firmware
Published: 2026-03-27
Last modified: 2026-06-17

Description

Path Traversal vulnerability in NEC Platforms, Ltd. Aterm Series allows a attacker to wtite over any file via network.

Frequently asked questions

What is CVE-2026-4619?: Path Traversal vulnerability in NEC Platforms, Ltd. Aterm Series allows a attacker to wtite over any file via network.
How severe is CVE-2026-4619?: CVE-2026-4619 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-2026-4619 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (41st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-4619?: CVE-2026-4619 affects Nec Aterm Wx3600hp Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-4619?: 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-2026-4619 have an EU (EUVD) identifier?: Yes. CVE-2026-4619 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-16586.
When was CVE-2026-4619 published?: CVE-2026-4619 was published on 2026-03-27 and last updated on 2026-06-17.

References

https://jpn.nec.com/security-info/secinfo/nv26-001_en.html

Affected products (1)

cpe:2.3:o:nec:aterm_wx3600hp_firmware:*:*:*:*:*:*:*:*

More vulnerabilities in Nec Aterm Wx3600hp Firmware

CVE-2026-4620 — Critical (CVSS 9.8): OS Command Injection vulnerability in NEC Platforms, Ltd. Aterm Series allows a attacker to execute arbitrary OS…
CVE-2026-4309 — Medium (CVSS 6.5): Missing Authorization vulnerability in NEC Platforms, Ltd. Aterm Series allows a attacker to get a specific device…
CVE-2026-4621 — Medium (CVSS 5.6): Hidden Functionality vulnerability in NEC Platforms, Ltd. Aterm Series allows a attacker to enable telnet via network.

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