How severe is CVE-2017-18373?

CVE-2017-18373 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2017-18373 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (92nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-18373?

CVE-2017-18373 affects Billion 5200w-t Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-18373?

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-2017-18373 published?

CVE-2017-18373 was published on 2019-05-02 and last updated on 2026-06-17.

CVE-2017-18373

CVE-2017-18373 is a high-severity vulnerability in Billion 5200w-t Firmware with a CVSS 3.x base score of 8.8. 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-798.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 9.0
EPSS exploit prediction: 5% (92nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-798
Affected product: Billion 5200w-t Firmware
Published: 2019-05-02
Last modified: 2026-06-17

Description

The Billion 5200W-T TCLinux Fw $7.3.8.0 v008 130603 router distributed by TrueOnline has three user accounts with default passwords, including two hardcoded service accounts: one with the username true and password true, and another with the username user3 and and a long password consisting of a repetition of the string 0123456789. These accounts can be used to login to the web interface, exploit authenticated command injections, and change router settings for malicious purposes.

Frequently asked questions

What is CVE-2017-18373?: The Billion 5200W-T TCLinux Fw $7.3.8.0 v008 130603 router distributed by TrueOnline has three user accounts with default passwords, including two hardcoded service accounts: one with the username true and password true, and another with the username user3 and and a long password consisting of a repetition of the string 0123456789. These accounts can be used to login to the web interface, exploit authenticated command injections, and change router settings for malicious purposes.
How severe is CVE-2017-18373?: CVE-2017-18373 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2017-18373 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (92nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-18373?: CVE-2017-18373 affects Billion 5200w-t Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-18373?: 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-2017-18373 published?: CVE-2017-18373 was published on 2019-05-02 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:billion:5200w-t_firmware:7.3.8.0:*:*:*:*:*:*:*

More vulnerabilities in Billion 5200w-t Firmware

CVE-2017-18371 — Critical (CVSS 9.8): The ZyXEL P660HN-T1A v2 TCLinux Fw #7.3.37.6 router distributed by TrueOnline has three user accounts with default…
CVE-2017-18369 — Critical (CVSS 9.8): The Billion 5200W-T 1.02b.rc5.dt49 router distributed by TrueOnline has a command injection vulnerability in the Remote…
CVE-2017-18368 — Critical (CVSS 9.8): The ZyXEL P660HN-T1A v1 TCLinux Fw $7.3.15.0 v001 / 3.40(ULM.0)b31 router distributed by TrueOnline has a command…
CVE-2017-18374 — High (CVSS 8.8): The ZyXEL P660HN-T1A v1 TCLinux Fw $7.3.15.0 v001 / 3.40(ULM.0)b31 router distributed by TrueOnline has two user…
CVE-2017-18372 — High (CVSS 8.8): The Billion 5200W-T TCLinux Fw $7.3.8.0 v008 130603 router distributed by TrueOnline has a command injection…
CVE-2017-18370 — High (CVSS 8.8): The ZyXEL P660HN-T1A v2 TCLinux Fw #7.3.37.6 router distributed by TrueOnline has a command injection vulnerability in…

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