How severe is CVE-2015-7283?

CVE-2015-7283 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2015-7283 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (88th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2015-7283?

CVE-2015-7283 affects Zyxel Nbg-418n Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2015-7283?

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

When was CVE-2015-7283 published?

CVE-2015-7283 was published on 2015-12-31 and last updated on 2026-06-17.

CVE-2015-7283

CVE-2015-7283 is a high-severity vulnerability in Zyxel Nbg-418n Firmware with a CVSS 3.x base score of 8.1. 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-255.

Key facts

Severity: High (CVSS 3.x base score 8.1)
CVSS v2: 9.3
EPSS exploit prediction: 4% (88th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-255
Affected product: Zyxel Nbg-418n Firmware
Published: 2015-12-31
Last modified: 2026-06-17

Description

The web administration interface on ZyXEL NBG-418N devices with firmware 1.00(AADZ.3)C0 has a default password of 1234 for the admin account, which allows remote attackers to obtain administrative privileges by leveraging a LAN session.

Frequently asked questions

What is CVE-2015-7283?: The web administration interface on ZyXEL NBG-418N devices with firmware 1.00(AADZ.3)C0 has a default password of 1234 for the admin account, which allows remote attackers to obtain administrative privileges by leveraging a LAN session.
How severe is CVE-2015-7283?: CVE-2015-7283 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2015-7283 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (88th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2015-7283?: CVE-2015-7283 affects Zyxel Nbg-418n Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2015-7283?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2015-7283 published?: CVE-2015-7283 was published on 2015-12-31 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:zyxel:nbg-418n_firmware:1.00$aadz.3$c0:*:*:*:*:*:*:*

More vulnerabilities in Zyxel Nbg-418n Firmware

CVE-2019-6710 — High (CVSS 8.8): Zyxel NBG-418N v2 v1.00(AAXM.4)C0 devices allow login.cgi CSRF.
CVE-2015-7284 — High (CVSS 8.0): Cross-site request forgery (CSRF) vulnerability on ZyXEL NBG-418N devices with firmware 1.00(AADZ.3)C0 allows remote…
CVE-2023-22922 — High (CVSS 7.5): A buffer overflow vulnerability in the Zyxel NBG-418N v2 firmware versions prior to V1.00(AARP.14)C0 could allow a…
CVE-2023-22921 — High (CVSS 7.5): A cross-site scripting (XSS) vulnerability in the Zyxel NBG-418N v2 firmware versions prior to V1.00(AARP.14)C0 could…
CVE-2023-22923 — Medium (CVSS 6.5): A format string vulnerability in a binary of the Zyxel NBG-418N v2 firmware versions prior to V1.00(AARP.14)C0 could…
CVE-2022-45441 — Medium (CVSS 6.1): A cross-site scripting (XSS) vulnerability in Zyxel NBG-418N v2 firmware versions prior to V1.00(AARP.13)C0, which…

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