CVE-2017-17901
ZyXEL P-660HW v3 devices allow remote attackers to cause a denial of service (CPU consumption) via a flood of IP packets with a TTL of 1.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (2.33%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
ZyXEL P-660HW v3 devices allow remote attackers to cause a denial of service (CPU consumption) via a flood of IP packets with a TTL of 1.
- CVSS 3.0
- 7.5 HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 2.33% probability · 83th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-400
- Affected
- zyxel/p-660hw firmware
- Source
- cve@mitre.org
EPSS 2.3% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://packetstormsecurity.com/files/145548/ZyXEL-P-660HW-TTL-Expiry-Denial-Of-Service.htmlExploit, Issue Tracking, Third Party Advisory, VDB Entry
- https://www.zyxel.com/support/announcement_denial_of_service.shtml
- http://packetstormsecurity.com/files/145548/ZyXEL-P-660HW-TTL-Expiry-Denial-Of-Service.htmlExploit, Issue Tracking, Third Party Advisory, VDB Entry
- https://www.zyxel.com/support/announcement_denial_of_service.shtml
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.