CVE-2026-80048CWE-770denial-of-service

CVE-2026-80048

Medium · published October 7, 2026

CVSS v3.1
5.5
EPSS
0%
Percentile
2.5
In the wild
Unconfirmed
What it is

A flaw was found in `sssd-kcm`. A local user or process able to connect to the `sssd-kcm` UNIX socket can exploit this vulnerability. By sending a large request length header and then stalling the connection, an attacker can cause the system to preallocate significant memory. This leads to memory exhaustion within the `sssd-kcm` responder, resulting in a Denial of Service (DoS) for affected deployments.

The record
Technical detail
CVSS v3.1
5.5 · MEDIUM
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.00133 · 2.5th percentile
Weakness
CWE-770 · Allocation of Resources Without Limits or Throttling
Published
2026-10-07T04:17Z
References (3)
https://access.redhat.com/security/cve/CVE-2026-80048 · [email protected]https://bugzilla.redhat.com/show_bug.cgi?id=2479377 · [email protected]https://bugzilla.redhat.com/show_bug.cgi?id=2479377 · 134c704f-9b21-4f2e-91b3-4a467353bcc0
EPSS history
Timeline
  • 08 OCT 03:33Z
    EPSS moved — → 0%
    epss
  • 06 OCT 23:28Z
    Sssd: sssd-kcm: local denial of service via excessive memory preallocation
    cvelistv5
  • 06 OCT 23:28Z
    Sssd: sssd-kcm: local denial of service via excessive memory preallocation
    cvelistv5