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CVE-2018-5393

35
FAUCET Score

CVE-2018-5393 describes an authentication bypass vulnerability in TP-LINK EAP Controller versions 2.5.3 and earlier, affecting TP-LINK's software for managing wireless access points. The vulnerability stems from the Java RMI service lacking authentication, allowing remote attackers to perform deserialization attacks. With a CVSS score of 9.8 (Critical), this flaw permits unauthenticated remote attackers to execute arbitrary Java functions or bytecode, leading to full server control. Despite its critical severity and high EPSS score, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2.5.3CPE matchmatch criteria
cpe:2.3:a:tp-link:eap_controller:*:*:*:*:*:*:*:*
>= 2.5.3, <= 2.5.3CPE match
cpe:2.3:a:tp-link:eap_controller:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
12.86%
Probability of exploitation in next 30 days
EPSS Percentile
95.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.1286 is in the 92nd percentile among its peer group of 36,833 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

kb.cert.org / vuls/id/581311
Third Party AdvisoryUS Government Resource
securityfocus.com / bid/105402
Third Party AdvisoryVDB Entry