CVE-2026-4620
CVE-2026-4620 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-78.
Key facts
- Severity: Critical (CVSS 3.x base score 9.8)
- CVSS v4: 7.1
- EPSS exploit prediction: 1% (68th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2026-16587
- Weakness: CWE-78
- Affected product: Nec Aterm Wx3600hp Firmware
- Published:
- Last modified:
Description
OS Command Injection vulnerability in NEC Platforms, Ltd. Aterm Series allows a attacker to execute arbitrary OS commands via network.
Frequently asked questions
- What is CVE-2026-4620?
- OS Command Injection vulnerability in NEC Platforms, Ltd. Aterm Series allows a attacker to execute arbitrary OS commands via network.
- How severe is CVE-2026-4620?
- CVE-2026-4620 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-2026-4620 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (68th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2026-4620?
- CVE-2026-4620 primarily affects Nec Aterm Wx3600hp Firmware. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2026-4620?
- 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-2026-4620 have an EU (EUVD) identifier?
- Yes. CVE-2026-4620 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-16587.
- When was CVE-2026-4620 published?
- CVE-2026-4620 was published on 2026-03-27 and last updated on 2026-06-17.
References
Affected products (2)
- cpe:2.3:o:nec:aterm_wx3600hp_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:nec:aterm_wx1500hp_firmware:*:*:*:*:*:*:*:*
More vulnerabilities in Nec Aterm Wx3600hp Firmware
- CVE-2026-4619 — Critical (CVSS 9.8): Path Traversal vulnerability in NEC Platforms, Ltd. Aterm Series allows a attacker to wtite over any file via network.
- 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.
All CVEs affecting Nec Aterm Wx3600hp Firmware →
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