CVE-2026-58095
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mp_Enddisc() Buffer Overflow in ppp(8)

Publication date: 2026-08-26

Last updated on: 2026-09-10

Assigner: FreeBSD

Description
mp_Enddisc() used incorrect length calculations when formatting endpoint discriminator addresses for display, allowing a received endpoint option to overflow a global result buffer. A malicious PPP peer can crash ppp(8) or potentially execute arbitrary code as root.

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Meta Information

Published
2026-08-26
Last Modified
2026-09-10
Generated
2026-09-16
AI Q&A
2026-08-26
EPSS Evaluated
2026-09-14
NVD
CVE-2026-58095
EUVD
EUVD-2026-66246

Affected Vendors & Products

Showing 22 associated CPEs
Vendor Product Version / Range
freebsd freebsd 15.0
freebsd freebsd 15.0
freebsd freebsd 15.0
freebsd freebsd 15.0
freebsd freebsd 14.4
freebsd freebsd 14.4
freebsd freebsd 15.0
freebsd freebsd 15.0
freebsd freebsd 14.4
freebsd freebsd 14.4
freebsd freebsd 15.0
freebsd freebsd 15.0
freebsd freebsd 14.4
freebsd freebsd 15.0
freebsd freebsd 14.4
freebsd freebsd 14.4
freebsd freebsd 15.0
freebsd freebsd 15.0
freebsd freebsd 15.1
freebsd freebsd 15.1
freebsd freebsd 14.4
freebsd freebsd 15.0

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-122 A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().

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Executive Summary

This vulnerability involves a buffer overflow in the mp_Enddisc() function due to incorrect length calculations when formatting endpoint discriminator addresses. A malicious PPP peer can exploit this to crash the ppp(8) process or execute arbitrary code with root privileges.

Detection Guidance

This vulnerability may be detected by monitoring for crashes in the ppp(8) daemon or examining network traffic for malformed PPP endpoint discriminator options. Check system logs for ppp-related crashes or unexpected behavior.

Impact Analysis

If you use the affected ppp(8) software, a malicious network peer could crash your system or gain root access, leading to potential data breaches, service disruption, or complete system compromise.

Compliance Impact

This vulnerability could lead to unauthorized access or data breaches, violating GDPR and HIPAA requirements for data protection and access control. Compliance may be compromised if systems are exploited.

Mitigation Strategies

Apply patches or updates from FreeBSD addressing this issue. Disable PPP services if not required. Monitor vendor advisories for fixes and restrict network access to PPP peers until patched.

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