CVE-2022-24705Network attack vector

Memory corruption via malformed RADIUS attributes

Published Feb 14, 2022 · Updated Sep 16, 2024

Buffer overflow in Accel-PPP 1.12 allows remote attackers to corrupt process memory through crafted RADIUS packets. The IPv6-Prefix branch of rad_packet_recv trusts the packet's attribute length and copies len minus two bytes into fixed 16-byte prefix storage without enforcing the valid 2-to-18-byte range. The daemon must process a reply from a malicious RADIUS peer; the out-of-bounds write corrupts memory in the Accel-PPP process.

CVSS severity9.8
Critical
EPSS probability1.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Buffer overflow in Accel-PPP 1.12 allows remote attackers to corrupt process memory through crafted RADIUS packets. The IPv6-Prefix branch of rad_packet_recv trusts the packet's attribute length and copies len minus two bytes into fixed 16-byte prefix storage without enforcing the valid 2-to-18-byte range. The daemon must process a reply from a malicious RADIUS peer; the out-of-bounds write corrupts memory in the Accel-PPP process.

The record

CVE
CVE-2022-24705
Published
Feb 14, 2022
Updated
Sep 16, 2024
Vendor
Accel PPP Inc
Product
Accel-PPP
Classifications
CWE-120, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 14, 2022CVE publishedPublication date reported by the CVE source.
  2. Sep 16, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.12 <=1.12

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Accel PPP Inc · Accel-PPPversion=1.12 <=1.12

Published CVSS scores

9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.5NIST NVDAV:N/AC:L/Au:N/C:P/I:P/A:P

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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