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Fencer Vulns
medium 6.8

CVE-2026-75883 json

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

published 2026-09-18 51 d ago modified 2026-11-06 3 d ago also EUVD-2026-82994

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

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
47 d ago

Exploit prediction

0.29% chance of exploitation in the next 30 days, higher than 21% of all scored CVEs (FIRST EPSS, 2026-11-08).

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 Vulns 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.