Critical Security Update for TFTP Package: CVE-2026-85234
Summary
RHSA-2026:80663: Red Hat Security Advisory: tftp security update. Affects tftp versions < 0:5.2-40.el9_8.1. Fixed in 0:5.2-40.el9_8.1. How to fix ↓
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Background
The Trivial File Transfer Protocol (TFTP) is a simple protocol used for transferring files, primarily in environments where minimal overhead is desired. It is commonly utilized for booting devices and transferring configuration files. The TFTP package in Red Hat Enterprise Linux 9 is essential for these operations, but it has been identified to have a security vulnerability that could potentially expose systems to unauthorized access or data loss.
Vulnerability Detail
CVE-2026-85234 is a security vulnerability affecting the TFTP package, which allows attackers to exploit the protocol's inherent weaknesses. This vulnerability can lead to unauthorized file access and manipulation, posing significant risks to system integrity and confidentiality. The vulnerability arises from improper handling of certain requests, which can be exploited by an attacker to execute arbitrary code or disrupt service. The CVSS score for this vulnerability is 7.5, indicating a high severity level.
How To Fix
Minimum fixed version
0:5.2-40.el9_8.1
This is the first release that contains the fix.
sudo dnf update tftpTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
If immediate patching is not possible, consider disabling the TFTP service until the update can be applied. This can be done by executing
sudo systemctl stop tftp' and 'sudo systemctl disable tftp
However, this may disrupt services that rely on TFTP.
Conclusion
The TFTP package vulnerability CVE-2026-85234 poses significant risks to system security. It is essential to apply the recommended updates to mitigate these risks. Regular monitoring and updates are crucial for maintaining a secure environment.
See every vulnerability recorded for tftp →
FAQ
CVE-2026-85234 is a security vulnerability in the TFTP package that can allow unauthorized access to files and potential code execution.
You can use the Vulert playground at Vulert Scanner to check if your application is affected by this vulnerability without any signup.
The risks include unauthorized file access, potential data loss, and the possibility of remote code execution, which can compromise system security.
It is recommended to regularly check for updates and apply them promptly to ensure your system is protected against known vulnerabilities.
Vulert is a tool that monitors and alerts in real-time for open-source vulnerabilities using a manifest file like package-lock.json, helping developers maintain secure applications.
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