CRITICAL 9.4 Microsoft

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).

Microsoft Security Update 2026-Aug: 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).

Affected Products

azl3 busybox 1.36.1-19 on Azure Linux 3.0
azl3 busybox 1.36.1-21 on Azure Linux 3.0
cbl2 busybox 1.35.0-18 on CBL Mariner 2.0
azl3 busybox 1.36.1-22 on Azure Linux 3.0
azl3 busybox 1.36.1-23 on Azure Linux 3.0
azl3 busybox 1.36.1-24 on Azure Linux 3.0
azl3 busybox 1.36.1-26 on Azure Linux 3.0
cbl2 busybox 1.35.0-14 on CBL Mariner 2.0

References

Published: 2026-08-06 · Source: Microsoft · Feed updated: 2026-08-10

This critical severity vulnerability with a CVSS score of 9.4 was published on 2026-08-06 via Microsoft. Affected: azl3 busybox 1.36.1-19 on Azure Linux 3.0, azl3 busybox 1.36.1-21 on Azure Linux 3.0, cbl2 busybox 1.35.0-18 on CBL Mariner 2.0 and 5 more.

Risk Timeline

CVE Disclosed2026-08-06 · 3 days ago

Remediation Resources

Official Advisory

msrc.microsoft.com/update-guide/vulnerability/CVE-2025-60876

NVD / MITRE

nvd.nist.gov/vuln/detail/CVE-2025-60876

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