CVE-2026-123205

Medium

Description

accel-ppp before 1.15.0 contains a heap buffer overflow vulnerability in the tcp, syslog and pgsql log targets that allows unauthenticated remote peers to overflow fixed heap buffers by producing log lines exceeding LOG_MAX_SIZE. Attackers within client-ip-range can send an L2TP Start-Control-Connection-Request with many string AVPs when verbose logging is enabled to corrupt heap memory and crash the daemon.

SeverityMedium

CVSS6.5

Exploit probability—

ProductAccel-ppp

PublishedNov 5, 2026

First seenNov 5, 2026

Weakness typeCWE-122CWE-122

How to fix

Update

accel-ppp accel-ppp1.15.0 or later

Patches

Vendor advisories

github.com/accel-ppp/accel-ppp/releases/tag/1.15.0

Affected products

Product	Affected versions	Fixed in
accel-ppp accel-ppp	v < 1.15.0	1.15.0

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