CVE-2026-75883
6.8
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Summary
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| PPP Project | ppp | 0 <= 2.5.0 | affected |
| PPP Project | ppp | 2.5.4 | unaffected |
Weaknesses
- CWE-122: CWE-122 Heap-based buffer overflow
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: none
- Automatable: no
- Technical Impact: total
References
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