Is CVE-2018-11574 actively exploited?

No active exploitation of CVE-2018-11574 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2018-11574 be exploited remotely?

Yes. CVE-2018-11574 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2018-11574?

CVE-2018-11574 has a CVSS score of 9.8 (CRITICAL).

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CRITICAL

CVE-2018-11574

CWE-20Published: June 14, 2018· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

Improper input validation together with an integer overflow in the EAP-TLS protocol implementation in PPPD may cause a crash, information disclosure, or authentication bypass. This implementation is distributed as a patch for PPPD 0.91, and includes the affected eap.c and eap-tls.c files. Configurations that use the `refuse-app` option are unaffected.

NVD Source

Technical Analysis

CVE-2018-11574 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.