CVE-2017-7964
CVE-2017-7964 is a critical-severity vulnerability in Zyxel Wre6505 Firmware with a CVSS 3.x base score of 10.0. 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-1188.
Key facts
- Severity: Critical (CVSS 3.x base score 10.0)
- CVSS v2: 10.0
- EPSS exploit prediction: 2% (83rd percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-1188
- Affected product: Zyxel Wre6505 Firmware
- Published:
- Last modified:
Description
Zyxel WRE6505 devices have a default TELNET password of 1234 for the root and admin accounts, which makes it easier for remote attackers to conduct DNS hijacking attacks by reconfiguring the built-in dnshijacker process.
Frequently asked questions
- What is CVE-2017-7964?
- Zyxel WRE6505 devices have a default TELNET password of 1234 for the root and admin accounts, which makes it easier for remote attackers to conduct DNS hijacking attacks by reconfiguring the built-in dnshijacker process.
- How severe is CVE-2017-7964?
- CVE-2017-7964 has a CVSS 3.x base score of 10.0, 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-2017-7964 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (83rd percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2017-7964?
- CVE-2017-7964 affects Zyxel Wre6505 Firmware. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2017-7964?
- 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-2017-7964 published?
- CVE-2017-7964 was published on 2017-04-19 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:o:zyxel:wre6505_firmware:*:*:*:*:*:*:*:*
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