F5 BIG-IP tmsh iHealth command restriction bypass to bash shell
CVE-2025-61958 is a privilege-escalation vulnerability in the iHealth command within the TMOS Shell (tmsh) on F5 BIG-IP systems. According to F5, an authenticated attacker with at least the Resource Administrator role can bypass tmsh restrictions and gain access to the Advanced Shell (bash). On systems running in Appliance mode, successful exploitation crosses the intended security boundary that is meant to prevent direct shell access to the underlying operating system. The provided context attributes the issue to improper sanitization or validation in the iHealth utility when processing diagnostic functionality, enabling escape from the restricted tmsh environment into bash.
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Exploits
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Recent activity
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A high-severity vulnerability in F5 BIG-IP, requiring authentication for exploitation. Not currently known to be exploited in the wild.
A vulnerability in F5 products allowing remote shell access by bypassing TMSH restrictions via unspecified iHealth command flaws.
A privilege escalation vulnerability in F5 BIG-IP's iHealth command allows authenticated attackers with resource administrator privileges to bypass TMSH restrictions and gain unauthorized bash shell access, potentially crossing security boundaries in Appliance mode.
An F5 BIG-IP vulnerability that lets an authenticated resource administrator escape tmsh into bash, cross a security boundary, and gain underlying OS access.
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Cross-references every affected SKU, including bundled OEM variants.
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