Vulnerability · Published Sep 18, 2026 · Assigned by redhat
CVE-2026-75883Pppd: pppd: buffer overflow in peap response handling leads to data corruption or denial of service.
Medium 6.8
In plain English
A medium-severity buffer overflow in Red Hat Enterprise Linux 10 from Red Hat. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 21% of all known vulnerabilities).
Severity (CVSS 3.1)6.8Medium
Exploit odds (30 days)0.3%top 78.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:13 | ppp | no fix listed | DEBIAN-CVE-2026-75883 |
| Debian:14 | ppp | no fix listed | DEBIAN-CVE-2026-75883 |
| Ubuntu:22.04:LTS | network-manager-l2tp | no fix listed | UBUNTU-CVE-2026-75883 |
| Ubuntu:24.04:LTS | network-manager-l2tp | no fix listed | UBUNTU-CVE-2026-75883 |
| Ubuntu:26.04:LTS | network-manager-l2tp | no fix listed | UBUNTU-CVE-2026-75883 |
| Ubuntu:26.10 | network-manager-l2tp | no fix listed | UBUNTU-CVE-2026-75883 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Red Hat | Red Hat Enterprise Linux 10 | see references |
| Red Hat | Red Hat Enterprise Linux 6 | see references |
| Red Hat | Red Hat Enterprise Linux 7 | see references |
| Red Hat | Red Hat Enterprise Linux 8 | see references |
| Red Hat | Red Hat Enterprise Linux 9 | see references |
Weakness: CWE-120 · Vector: CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
References
- https://access.redhat.com/security/cve/CVE-2026-75883 vdb-entry, x_refsource_REDHAT
- RHBZ#2538346 issue-tracking, x_refsource_REDHAT
- https://github.com/ppp-project/ppp/security/advisories/GHSA-rwr9-4vx8-vc35