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Back to active CVEs
Medium · CVSS 6.8CVE-2026-75883

PPPD buffer overflow in PEAP response codeCVE-2026-75883

Answer in brief

CVE-2026-75883 records a Medium severity (CVSS 6.8) vulnerability in PPPD buffer overflow in PEAP response code. The current sources do not mark it as known exploited. The current feed maps PPP Project/ppp (generic), PPP Project/ppp (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 18, 2026Updated Sep 22, 2026Source checked Nov 2, 2026First seen by HOL Sep 18, 2026Material review Sep 22, 2026
Upstream Advisory

Key facts

Risk
Medium · CVSS 6.8
Exploitation
Not marked as known exploited
Affected software
2 mapped packages or products
Fix availability
Not reported

Why this deserves its current priority

CVSS is 6.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps PPP Project/ppp (generic), PPP Project/ppp (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
PPP Project/pppgeneric0Not reported
PPP Project/pppgeneric>=0 <=2.5.0Not reported

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for PPP Project/ppp, PPP Project/ppp.
  2. 2Review the reported fix. Monitor this advisory for an available fix and review any installs of the affected package.

Evidence timeline and material changes

  1. Published upstream

    Sep 18, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Sep 22, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Sep 18, 2026

Sources and claim methodology

  • GitHub security advisorygithub.com
Upstream source 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.

Quoted source text, attributed separately from HOL analysis.

Record context

Vulnerability class
Missing Auth
EPSS
Not reported
CWE IDs
CWE-122
Source
CVE List V5
Source checked
Nov 2, 2026
References
1 linked source
Open source record