CVE-2026-75883
PPPD buffer overflow in PEAP response code
- State
- Published
- Severity
- 6.8 Medium
- Published
- Sep 18, 2026
- Updated
- Sep 22, 2026
- Reserved
- Aug 18, 2026
Description
The code in pppd that formats a response to a PEAP Request packet in peap_response() copies an entire TLS record of up to 16384 bytes into the fixed global buffer outpacket_buf without checking the available space and without implementing outgoing PEAP fragmentation. Thus a pppd process connecting to a server which requests PEAP authentication can be induced to corrupt global static data following the outpacket_buf array, most likely causing incorrect behavior or a crash.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 6.8 Medium | CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N | redhat |
Weaknesses
- CWE-122 Heap-based buffer overflow
Affected Products
| Product | Versions |
|---|---|
pppPPP Project |
|
References
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