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Fencer Intel
medium 6.8

CVE-2026-75883 json

Pppd: pppd: buffer overflow in peap response handling leads to data corruption or denial of service.

published 2mo ago modified 6d ago also EUVD-2026-82994 , GHSA-rwr9-4vx8-vc35

Unreviewed: the maintainers' own advisory

Published by the maintainers on their GitHub repository ppp-project/ppp. GitHub has not reviewed it into the GitHub Advisory Database, so the affected packages and versions are the maintainers' word. Read the full advisory on GitHub.

cvss
6.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 21%
public exploits
0
none known

Summary

A flaw was found in pppd. A remote attacker could exploit a buffer overflow vulnerability in the PEAP response handling. By sending a specially crafted PEAP Request packet, an attacker could cause the pppd process to corrupt global static data, leading to incorrect behavior or a system crash.

Patch / fix

  • NetworkManager-l2tp openSUSE Tumbleweed 1.52.6-1.1

opensuse advisories openSUSE-SU-2026:11802-1

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-75883 updated cvss 6.8

pppd: pppd: Buffer overflow in PEAP response handling leads to data corruption or denial of service.

  • Red Hat Enterprise Linux 6 ppp, ppp 2.5.0-13.el10 Red Hat Enterprise Linux 7 ppp, ppp 2.5.0-13.el10 Red Hat Enterprise Linux 8 ppp, ppp 2.5.0-13.el10, network-scripts-ppp Red Hat Enterprise Linux 9 ppp 2.5.0-13.el10 Red Hat Enterprise Linux 10 ppp 2.5.0-13.el10
    affected: no fix available “Fix deferred”

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
last mo.

Exploit prediction

0.29% chance of exploitation in the next 30 days, higher than 21% of all scored CVEs (FIRST EPSS, 2026-11-11).

CVSS scores

assigned by version score vector
CNA 3.1 6.8 CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

Affected products

  • Red Hat Red Hat Enterprise Linux 10
  • Red Hat Red Hat Enterprise Linux 6
  • Red Hat Red Hat Enterprise Linux 7
  • Red Hat Red Hat Enterprise Linux 8
  • Red Hat Red Hat Enterprise Linux 9

Classification

Weakness
  • CWE-120 Buffer Copy without Checking Size of Input

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

The maintainers of ppp-project/ppp published their own advisory on GitHub. Reviewed sources take precedence over it.