What’s Vulnerable › Vulnerabilities

CVE-2022-24705: Buffer Overflow via Crafted Ipv6 Prefix Attribute Type Client Request in accel-ppp v1.12

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2022-02-14 · updated 2026-06-17
• Weakness: CWE-120

Description

The rad_packet_recv function in radius/packet.c suffers from a memcpy buffer overflow, resulting in an overly-large recvfrom into a fixed buffer that causes a buffer overflow and overwrites arbitrary memory. If the server connects with a malicious client, crafted client requests can remotely trigger this vulnerability.

Affected products

• https://accel-ppp.org/ Accel-PPP: before 1.12.0 — fixed in 1.12.0

How to fix

Upgrade to a fixed version: https://accel-ppp.org/ Accel-PPP 1.12.0. Check the vendor advisory for mitigations.

References

• https://github.com/accel-ppp/accel-ppp/pull/35
• https://github.com/accel-ppp/accel-ppp/pull/35

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