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Vulnerability record · CVE-2018-11574 · published 14 June 2018

CVE-2018-11574: Point-to-point protocol project point-to-point protocol improper input validation vulnerability

PPoint To Point Protocol Project · Point To Point Protocol

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.

9.8 CVSS 3.1 Critical EPSS 1.9% · top 20.7% CWE-20 · Improper input validationCWE-190 · Integer overflow
9.8CVSS 3.1 base score, v2 7.5
1.9%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
4References
17 Jun 2026Last modified by NVD

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.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://www.openwall.com/lists/oss-security/2018/06/11/1 Mailing ListPatchThird Party Advisory
https://usn.ubuntu.com/3810-1/ Third Party Advisory
http://www.openwall.com/lists/oss-security/2018/06/11/1 Mailing ListPatchThird Party Advisory
https://usn.ubuntu.com/3810-1/ Third Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2018-11574), CISA KEV, FIRST EPSS (scores of 2026-10-14). This page is refreshed as NVD updates the record.