Critical Command Execution Vulnerability in Config-IniFiles Affects Ubuntu and Fedora

Linuxsecurity

Critical Command Execution Vulnerability in Config-IniFiles Affects Ubuntu and Fedora

First seen 20 Jun 2026, 01:55 UTC • •72.6

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ThreatCluster •June 21, 2026 at 01:48 UTC

•CVE-2026-11527 allows command execution via crafted input in Config-IniFiles.
•Affected systems include Ubuntu 26.04 LTS and Fedora 44, among others.
•Users must update their systems immediately to mitigate potential exploits.

A critical security vulnerability has been identified in the Config-IniFiles Perl module, affecting multiple Ubuntu releases and Fedora 44. The flaw allows attackers to execute arbitrary commands or overwrite files through specially crafted input. Specifically, Ubuntu versions 26.04 LTS, 25.10, 24.04 LTS, and 22.04 LTS are impacted, as well as Fedora 44. The vulnerability is tracked as CVE-2026-11527, which was published on June 14, 2026. Users are advised to update their systems to mitigate the risk. The issue was confirmed by security notices from both Ubuntu and Fedora. The updates for Ubuntu were released on June 17, 2026, while Fedora's update was made available on June 20, 2026. This vulnerability poses a significant risk to systems using the affected versions.

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Timeline

2026-06-14

CVE-2026-11527 published

CVE-2026-11527 details a critical flaw in Config-IniFiles that can lead to command execution.

2026-06-17

Ubuntu security update released

Ubuntu released updates for multiple versions to address the Config-IniFiles vulnerability.

2026-06-20

Fedora security update released

Fedora issued an update for version 44 to fix the Config-IniFiles vulnerability.

More articles in this cluster (2)

Threat Graph

5 entities, 4 inferred relationships (STIX 2.1).

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Technique (2)

Zero-day Exploit
T1059 - Command and Scripting Interpreter

Organization (1)

Ubuntu

Vulnerability (1)

CVE-2026-11527

Weakness (1)

CWE-78 - OS Command Injection

Relationships

CVE-2026-11527 related to Zero-day Exploit
CVE-2026-11527 related to Ubuntu
CVE-2026-11527 related to CWE-78 - OS Command Injection
CVE-2026-11527 related to T1059 - Command and Scripting Interpreter

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