PatchTheCVECVE-2022-0982: The telnet_input_char function in opt/src/accel-pppd/cli/telnet.c suffers from a memory corruption vulnerabili
CVE-2022-0982 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 telnet_input_char function in opt/src/accel-pppd/cli/telnet.c suffers from a memory corruption vulnerability, whereby user input cmdline_len is copied into a fixed buffer b->buf without any bound checks. If the server connects with a malicious client, crafted client requests can remotely trigger this vulnerability.
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 31%) |
| CISA exploited list | No |
| Weakness | CWE-787 |
| Published | 2022-03-16 |
| 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-2022-0982?
accel-ppp: upgrade to newer than 1.12.0. Exact commands for each OS are on this page.
Is CVE-2022-0982 being exploited?
CVE-2022-0982 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-2022-0982 affect?
CVE-2022-0982 affects accel-ppp. Severity is critical (CVSS 9.8). The telnet_input_char function in opt/src/accel-pppd/cli/telnet.c suffers from a memory corruption vulnerability, whereby user input cmdline_len is copied into a fixed buffer b->buf without any bound checks. If the server connects with a ma
How urgent is CVE-2022-0982?
Priority 57/100. Critical severity; Remotely exploitable, no login, no user action
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