CVE-2025-60876: busybox Access Control Flaw — Exploit

Description

BusyBox wget thru 1.3.7 accepted raw CR (0x0D)/LF (0x0A) and other C0 control bytes in the HTTP request-target (path/query), allowing the request line to be split and attacker-controlled headers to be injected. To preserve the HTTP/1.1 request-line shape METHOD SP request-target SP HTTP/1.1, a raw space (0x20) in the request-target must also be rejected (clients should use %20).

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CVSS v3.1 Score

6.5

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Weakness Type (CWE)

CWE-284 CWE-284

Affected Products

Vendor	Product	Versions
busybox	busybox	< 1.37.0

References

Exploits

https://gist.github.com/subyumatest/41554af6a72aedaacaec026adc311092

Other References

https://lists.busybox.net/pipermail/busybox/attachments/20250823/ccdc96ef/attachment-0001.htm https://lists.busybox.net/pipermail/busybox/attachments/20250828/e7f90492/attachment.htm

Frequently Asked Questions

What is CVE-2025-60876? +

BusyBox wget thru 1.3.7 accepted raw CR (0x0D)/LF (0x0A) and other C0 control bytes in the HTTP request-target (path/query), allowing the request line to be split and attacker-controlled headers to be injected. To preserve the HTTP/1.1 request-line shape METHOD SP request-target SP HTTP/1.1, a raw space (0x20) in the request-target must also be rejected (clients should use %20). It has a CVSS v3.1 base score of 6.5 (MEDIUM).

How severe is CVE-2025-60876? +

CVE-2025-60876 has a CVSS v3.1 score of 6.5 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2025-60876? +

CVE-2025-60876 affects products from busybox, specifically: busybox. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-60876? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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