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CVE-2024-55957 is a local privilege escalation vulnerability affecting Thermo Fisher Scientific Xcalibur before 4.7 SP1 and Thermo Foundation Instrument Control Software (ICSW) before 3.1 SP10 on Windows. The flaw is caused by improper access control permissions on installed application files, including executables and DLLs associated with services. Low-privileged or authenticated local users can modify or overwrite files within the software installation directory even though one or more related Windows services execute with NT AUTHORITY\SYSTEM privileges. By replacing a service executable or other loaded component and waiting for a service restart or a system reboot, an attacker can cause attacker-controlled code to run with elevated privileges.
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What an attacker gets, and what they’ve been doing with it.
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Patch, then assume compromise.
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
2 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A local privilege escalation vulnerability in Thermo Scientific Xcalibur and Foundation software caused by overly permissive file permissions that allow Authenticated Users full write access to service executables and DLLs.
A local privilege escalation vulnerability in Thermo Scientific Xcalibur and Foundation software caused by improper access controls on application files, allowing low-privileged users to overwrite service executables or DLLs and gain SYSTEM privileges after a service restart or reboot.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.