How severe is CVE-2017-16523?

CVE-2017-16523 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-2017-16523 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (89th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-16523?

CVE-2017-16523 primarily affects Mitrastar Gpt-2541gnac 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-2017-16523?

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-2017-16523 published?

CVE-2017-16523 was published on 2017-11-03 and last updated on 2026-06-17.

CVE-2017-16523

CVE-2017-16523 is a critical-severity vulnerability in Mitrastar Gpt-2541gnac 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.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 10.0
EPSS exploit prediction: 4% (89th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Mitrastar Gpt-2541gnac Firmware
Published: 2017-11-03
Last modified: 2026-06-17

Description

MitraStar GPT-2541GNAC (HGU) 1.00(VNJ0)b1 and DSL-100HN-T1 ES_113WJY0b16 devices have a zyad1234 password for the zyad1234 account, which is equivalent to root and undocumented.

Frequently asked questions

What is CVE-2017-16523?: MitraStar GPT-2541GNAC (HGU) 1.00(VNJ0)b1 and DSL-100HN-T1 ES_113WJY0b16 devices have a zyad1234 password for the zyad1234 account, which is equivalent to root and undocumented.
How severe is CVE-2017-16523?: CVE-2017-16523 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-2017-16523 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (89th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-16523?: CVE-2017-16523 primarily affects Mitrastar Gpt-2541gnac 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-2017-16523?: 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-2017-16523 published?: CVE-2017-16523 was published on 2017-11-03 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:o:mitrastar:gpt-2541gnac_firmware:1.00\(vnj0\)b1:*:*:*:*:*:*:*
cpe:2.3:o:mitrastar:dsl-100hn-t1_firmware:es_113wjy0b16:*:*:*:*:*:*:*

More vulnerabilities in Mitrastar Gpt-2541gnac Firmware

CVE-2017-16522 — High (CVSS 8.8): MitraStar GPT-2541GNAC (HGU) 1.00(VNJ0)b1 and DSL-100HN-T1 ES_113WJY0b16 devices allow remote authenticated users to…

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