CVE-2017-1000020
CVE-2017-1000020 is a critical-severity vulnerability in Ecos Embedded Web Servers 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. The underlying weakness is classified as CWE-287.
Key facts
- Severity: Critical (CVSS 3.x base score 9.8)
- CVSS v2: 10.0
- EPSS exploit prediction: 3% (85th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-287
- Affected product: Ecos Embedded Web Servers
- Published:
- Last modified:
Description
SYN Flood or FIN Flood attack in ECos 1 and other versions embedded devices results in web Authentication Bypass. "eCos Embedded Web Servers used by Multiple Routers and Home devices, while sending SYN Flood or FIN Flood packets fails to validate and handle the packets and does not ask for any sign of authentication resulting in Authentication Bypass. An attacker can take complete advantage of this bug and take over the device remotely or locally. The bug has been successfully tested and reproduced in some versions of SOHO Routers manufactured by TOTOLINK, GREATEK and others."
Frequently asked questions
- What is CVE-2017-1000020?
- SYN Flood or FIN Flood attack in ECos 1 and other versions embedded devices results in web Authentication Bypass. "eCos Embedded Web Servers used by Multiple Routers and Home devices, while sending SYN Flood or FIN Flood packets fails to validate and handle the packets and does not ask for any sign of authentication resulting in Authentication Bypass. An attacker can take complete advantage of this bug and take over the device remotely or locally. The bug has been successfully tested and reproduced in some versions of SOHO Routers manufactured by TOTOLINK, GREATEK and others."
- How severe is CVE-2017-1000020?
- CVE-2017-1000020 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-2017-1000020 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (85th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2017-1000020?
- CVE-2017-1000020 affects Ecos Embedded Web Servers. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2017-1000020?
- 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-2017-1000020 published?
- CVE-2017-1000020 was published on 2017-07-17 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:o:ecos:embedded_web_servers:*:*:*:*:*:*:*:*
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