PatchTheCVECVE-2022-24704: The rad_packet_recv function in opt/src/accel-pppd/radius/packet.c suffers from a buffer overflow vulnerabilit
CVE-2022-24704 is a critical-severity flaw (CVSS 9.8) affecting accel-ppp. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
The rad_packet_recv function in opt/src/accel-pppd/radius/packet.c suffers from a buffer overflow vulnerability, whereby user input len is copied into a fixed buffer &attr->val.integer without any bound checks. If the client connects to the server and sends a large radius packet, a buffer overflow vulnerability will be triggered.
Why this priority
- Critical severity
- Remotely exploitable, no login, no user action
A fixed release or distro patch exists.
Risk facts
| CVSS score | 9.8 (Critical) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 1.2% (top 32%) |
| CISA exploited list | No |
| Weakness | CWE-120 |
| Published | 2022-02-14 |
| Last modified | 2026-06-17 |
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2022-24704?
accel-ppp: upgrade to newer than 1.12.0. Exact commands for each OS are on this page.
Is CVE-2022-24704 being exploited?
CVE-2022-24704 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2022-24704 affect?
CVE-2022-24704 affects accel-ppp. Severity is critical (CVSS 9.8). The rad_packet_recv function in opt/src/accel-pppd/radius/packet.c suffers from a buffer overflow vulnerability, whereby user input len is copied into a fixed buffer &attr->val.integer without any bound checks. If the client connects to the
How urgent is CVE-2022-24704?
Priority 56/100. Critical severity; Remotely exploitable, no login, no user action
Related CVEs
- CVE-2022-24705 CRITICAL 9.8 UPGRADE The rad_packet_recv function in radius/packet.c suffers from a memcpy buffer overflow, resulting in an overly-
- CVE-2022-0982 CRITICAL 9.8 UPGRADE The telnet_input_char function in opt/src/accel-pppd/cli/telnet.c suffers from a memory corruption vulnerabili
- CVE-2021-42870 HIGH 7.5 DOWNGRADE ACCEL-PPP 1.12.0 has an out-of-bounds read in post_msg when processing a call_clear_request.
- CVE-2021-42054 HIGH 7.5 DOWNGRADE ACCEL-PPP 1.12.0 has an out-of-bounds read in triton_context_schedule if the client exits after authentication
- CVE-2020-28194 CRITICAL 9.8 UPGRADE Variable underflow exists in accel-ppp radius/packet.c when receiving a RADIUS vendor-specific attribute with