CVE-2018-15840
CVSS v3
7.5
HIGH
EPSS Score
1.9 %
exploit probability, as of 2026-09-25
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
TP-Link TL-WR840N devices allow remote attackers to cause a denial of service (networking outage) via fragmented packets, as demonstrated by an "nmap -f" command.
Technical details
- Published
- 2019-03-29
Frequently asked questions
What is CVE-2018-15840?
TP-Link TL-WR840N devices allow remote attackers to cause a denial of service (networking outage) via fragmented packets, as demonstrated by an "nmap -f" command.
Is CVE-2018-15840 actively exploited?
Active exploitation of CVE-2018-15840 has not been confirmed. Its EPSS score was 1.9% on 2026-09-25, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2018-15840?
CVE-2018-15840 has a CVSS v3 base score of 7.5 (HIGH severity).
Is CVE-2018-15840 affecting your environment?
Use isMalicious to check if any of your IPs or domains are associated with this vulnerability's IOCs.
No credit card required · 500 free checks/month · Free API key
Other 2018 vulnerabilities worth triaging
Ranked by exploit probability (EPSS).