CVE-2026-124739 (GCVE-0-2026-124739)
Vulnerability from cvelistv5 – Published: 2026-11-11 10:41 – Updated: 2026-11-11 10:41
VLAI
EPSS
VEX
Title
Busybox: httpd stack buffer overflow via an "i:" rule in a subdirectory httpd.conf
Summary
A flaw was found in BusyBox. When the httpd web server processes subdirectory configuration files, an overly long index page name can trigger a stack-based buffer overflow. An attacker with permissions to write to a subdirectory configuration file could exploit this vulnerability to execute arbitrary code with elevated privileges or cause a denial of service (DoS) by crashing the server process.
Severity
7.5 (High)
CWE
- CWE-787 - Out-of-bounds Write
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://access.redhat.com/security/cve/CVE-2026-124739 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2571613 | issue-trackingx_refsource_REDHAT |
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Red Hat | Red Hat Enterprise Linux 6 |
cpe:/o:redhat:rhel_els:6
|
||
| Red Hat | Red Hat Hardened Images |
cpe:/a:redhat:hummingbird:1
|
Date Public
2026-11-11 09:15
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"value": "Prevent untrusted users from creating or modifying configuration files by restricting write permissions on all web root and subdirectory paths served by BusyBox httpd to administrative accounts only:\n\nchmod -R o-w /path/to/webroot\n\nAdditionally, ensure the BusyBox httpd process drops elevated privileges by specifying an unprivileged user with the `-u` flag upon execution:\n\nbusybox httpd -u nobody\n\nRestarting the daemon is required for process-level flag changes to take effect, which will temporarily terminate active network connections.\n\nCaveats: Running under a non-privileged user account prevents binding directly to privileged ports (below 1024) without additional system capabilities or port forwarding, and restricting directory permissions may interfere with workflows that require unprivileged file uploads."
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"title": "busybox: httpd stack buffer overflow via an \"I:\" rule in a subdirectory httpd.conf",
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Browse all ATT&CK techniques and the vulnerabilities related to each.
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