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CVE-2018-15840

25
FAUCET Score

CVE-2018-15840 describes a denial-of-service vulnerability affecting TP-Link TL-WR840N routers, where fragmented packets can cause a networking outage. This vulnerability carries a CVSS v3.0 score of 7.5 (High), indicating it can be exploited remotely with low attack complexity and no user interaction, leading to high availability impact. While no active exploitation, public exploit code, or significant community discussion has been observed, organizations using affected devices should be aware of this potential risk.

Impacted Technologies

VendorProductVersion(s)CPE
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:o:tp-link:tl-wr840n_firmware:-:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.5HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.86%
Probability of exploitation in next 30 days
EPSS Percentile
77.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0186 is in the 60th percentile among its peer group of 51,506 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

hackingvila.wordpress.com / 2019/02/17/tp-link-wireless-n-router-wr840n-buffer-overflow-cve-2018-15840
ExploitThird Party Advisory