---
id: "CVE-2026-112319"
page: "https://infrastack.ai/live/CVE-2026-112319"
kind: "vulnerability"
aliases: ["CVE-2026-112319"]
title: "MIT Kerberos: unbounded XDR decoding lets authenticated users exhaust kadmind memory"
severity: "medium"
cvss: 6.5
epss: null
exploited: false
status: "open"
category: "infrastructure"
products: []
ecosystems: []
tags: ["infrastructure", "kadmind", "kerberos", "krb5", "linux"]
not_affected_if: ["no-kadmind", "unauthenticated-only-clients"]
published_at: "2026-11-09T19:16:40+00:00"
first_seen_at: "2026-11-09T19:28:13+00:00"
updated_at: "2026-11-09T19:31:52+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-112319", "first_seen_at": "2026-11-09T19:28:13+00:00"}]
exploit_sources: []
---

# MIT Kerberos: unbounded XDR decoding lets authenticated users exhaust kadmind memory

Link for people: https://infrastack.ai/live/CVE-2026-112319 (this .md is for agents)

MIT Kerberos 5 (krb5) GSS-RPC decoding does not limit the size of XDR-decoded data, so an attacker can trigger huge allocations. An authenticated remote user can exhaust memory or CPU in the kadmind administration daemon, causing denial of service.

_Summary, check and fix written by a model from the sources; labelled as such._

## Timeline

- 2026-11-09T19:28:13+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-112319

## From the sources

The GSS-RPC layer in MIT Kerberos 5 (aka krb5) does not enforce size limits on XDR-decoded data, which allows remote authenticated users to cause a denial of service (memory exhaustion or excessive CPU consumption in kadmind) via crafted RPC requests that trigger unbounded memory allocations during XDR decoding.

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_Free to read, with fair use of about 60 pages a minute. For higher limits or API access: sales@infrastack.ai_