Red Hat Enterprise Linux wget/Hardened Images buffer overflow

Summaryinfo

A vulnerability, which was classified as very critical, has been found in Red Hat Enterprise Linux. This impacts an unknown function of the component wget/Hardened Images. This manipulation causes buffer overflow. This vulnerability is handled as CVE-2026-124747. The attack can be initiated remotely. There is not any exploit available.

Detailsinfo

A vulnerability has been found in Red Hat Enterprise Linux (affected version unknown) and classified as very critical. Affected by this vulnerability is an unknown functionality of the component wget/Hardened Images. The manipulation with an unknown input leads to a buffer overflow vulnerability. The CWE definition for the vulnerability is CWE-120. The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

A flaw was found in BusyBox. When resuming a download over File Transfer Protocol (FTP), the wget utility fails to verify that the resume offset does not exceed the file size reported by the server, resulting in an integer calculation error. A malicious FTP server or an on-path network attacker can exploit this issue by returning crafted file size metadata, triggering a heap-based buffer overflow with attacker-controlled data. Successful exploitation may allow an attacker to execute arbitrary code or crash the application, resulting in a denial of service (DoS).

It is possible to read the advisory at access.redhat.com. This vulnerability is known as CVE-2026-124747 since 11/09/2026. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD at the moment (estimation calculated on 11/10/2026).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Type

• Operating System

Vendor

• Red Hat

Name

• Enterprise Linux

License

• commercial

Website

• Vendor: https://www.redhat.com/

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