CVE-2017-17550
CVE-2017-17550 is a high-severity vulnerability in Zyxel Zywall Usg 100 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-352.
Key facts
- Severity: High (CVSS 3.x base score 8.8)
- CVSS v2: 6.8
- EPSS exploit prediction: 0% (39th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-352
- Affected product: Zyxel Zywall Usg 100 Firmware
- Published:
- Last modified:
Description
ZyXEL ZyWALL USG 2.12 AQQ.2 and 3.30 AQQ.7 devices are affected by a CSRF vulnerability via a cgi-bin/zysh-cgi cmd action to add a user account. This account's access could, for example, subsequently be used for stored XSS.
Frequently asked questions
- What is CVE-2017-17550?
- ZyXEL ZyWALL USG 2.12 AQQ.2 and 3.30 AQQ.7 devices are affected by a CSRF vulnerability via a cgi-bin/zysh-cgi cmd action to add a user account. This account's access could, for example, subsequently be used for stored XSS.
- How severe is CVE-2017-17550?
- CVE-2017-17550 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2017-17550 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (39th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2017-17550?
- CVE-2017-17550 primarily affects Zyxel Zywall Usg 100 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-2017-17550?
- 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-2017-17550 published?
- CVE-2017-17550 was published on 2018-11-10 and last updated on 2026-06-17.
References
Affected products (2)
- cpe:2.3:o:zyxel:zywall_usg_100_firmware:2.12\(aqq.2\):*:*:*:*:*:*:*
- cpe:2.3:o:zyxel:zywall_usg_100_firmware:3.30\(aqq.7\):*:*:*:*:*:*:*
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