What is CVE-2022-0982?

CVE-2022-0982 is a critical-severity vulnerability in Accel-Ppp, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2022-03-16.

How severe is CVE-2022-0982?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Buffer overflow in Accel-Ppp

CVE-2022-0982

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.

Vulnerability class: Buffer Overflow

Published 2022-03-16 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.012 (68.0th percentile), scored 2026-10-03.

Low probability of exploitation in the next 30 days, but still tracked. 68th percentile — 68.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.012 · newest: 0.012 · change: 0.000

Affected products

Accel-Ppp
Https://accel-Ppp.org/ Accel-Ppp — versions 1.12

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

github.com/xebd/accel-ppp/issues/164 (Third Party Advisory)

Frequently asked questions

What is CVE-2022-0982?: CVE-2022-0982 is a critical-severity vulnerability in Accel-Ppp, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2022-03-16.
How severe is CVE-2022-0982?: Critical severity. CVSS v3 base score is 9.8 out of 10.