How severe is CVE-2015-6018?

CVE-2015-6018 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-2015-6018 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 21% (97th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2015-6018?

CVE-2015-6018 affects Zyxel Pmg5318-b20a Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2015-6018?

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.

When was CVE-2015-6018 published?

CVE-2015-6018 was published on 2015-12-31 and last updated on 2026-06-17.

CVE-2015-6018

CVE-2015-6018 is a critical-severity vulnerability in Zyxel Pmg5318-b20a Firmware with a CVSS 3.x base score of 9.8. Its EPSS exploit-prediction score of 21% places it in the 97th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-264.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 10.0
EPSS exploit prediction: 21% (97th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-264
Affected product: Zyxel Pmg5318-b20a Firmware
Published: 2015-12-31
Last modified: 2026-06-17

Description

The diagnostic-ping implementation on ZyXEL PMG5318-B20A devices with firmware before 1.00(AANC.2)C0 allows remote attackers to execute arbitrary commands via the PingIPAddr parameter.

Frequently asked questions

What is CVE-2015-6018?: The diagnostic-ping implementation on ZyXEL PMG5318-B20A devices with firmware before 1.00(AANC.2)C0 allows remote attackers to execute arbitrary commands via the PingIPAddr parameter.
How severe is CVE-2015-6018?: CVE-2015-6018 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-2015-6018 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 21% (97th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2015-6018?: CVE-2015-6018 affects Zyxel Pmg5318-b20a Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2015-6018?: 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.
When was CVE-2015-6018 published?: CVE-2015-6018 was published on 2015-12-31 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:zyxel:pmg5318-b20a_firmware:*:*:*:*:*:*:*:*

More vulnerabilities in Zyxel Pmg5318-b20a Firmware

CVE-2015-6016 — Critical (CVSS 9.8): ZyXEL P-660HW-T1 2 devices with ZyNOS firmware 3.40(AXH.0), PMG5318-B20A devices with firmware 1.00AANC0b5, and…
CVE-2015-6019 — High (CVSS 8.5): The management portal on ZyXEL PMG5318-B20A devices with firmware 1.00AANC0b5 does not terminate sessions upon a logout…
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