High

Path-based improper input validation in ABB FLXeon

IdentifiersCVE-2025-10207CWE-1287· Improper Validation of Specified…

CVE-2025-10207 is an improper validation of specified type of input vulnerability in ABB FLXeon controllers affecting firmware version 9.3.5 and earlier. According to the provided advisory summary, the issue allows users to push files using full pathnames, which enables file operations in restricted directories. In practice, this indicates insufficient validation or restriction of pathname input during file upload or file push operations, allowing attacker-controlled path values to reach locations that should not be writable or otherwise accessible. The affected FLXeon product families include FBXi, FBVi, FBTi, and CBXi variants running affected firmware.

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ANALYST BRIEF

Impact, mitigation & remediation

What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.

Impact

What an attacker gets, and what they’ve been doing with it.

Successful exploitation could allow an attacker to perform unauthorized file operations in restricted directories on the target device. The advisory also states that successful exploitation of the reported FLXeon vulnerabilities could allow remote control of the product, arbitrary code execution, or device crash; for CVE-2025-10207 specifically, the direct impact supported by the provided content is unauthorized file placement or manipulation in restricted paths, which may facilitate further compromise depending on what files can be written or modified.

Mitigation

If you can’t patch tonight, do this now.

ABB and CISA recommend stopping and disconnecting FLXeon products that are directly exposed to the Internet, including exposure through NAT port forwarding. Restrict network access to trusted management networks, enforce physical and network controls, and use secure remote access methods such as properly configured and fully updated VPNs. Until patched, minimize or disable unneeded remote file transfer interfaces where operationally feasible and monitor for unexpected file operations on the device.

Remediation

Patch, then assume compromise.

Upgrade ABB FLXeon products to the latest firmware version, as ABB recommends upgrading all FLXeon products and the issue affects version 9.3.5 and earlier. Apply vendor-provided fixes across affected FBXi, FBVi, FBTi, and CBXi product lines. Validate that exposed file transfer or file push functionality is updated to a fixed release before returning systems to normal operation.

PUBLIC EXPLOITS

Exploits

No public exploits tracked yet. Mallory keeps watching.

VALID 0 / 0 TOTALView more in app

No public exploit code observed for this vulnerability.

ACTIVITY FEED

Recent activity

4 sources tracked across advisories and community write-ups. News coverage will land here when it surfaces.

4 SOURCESView more in app

No news coverage yet. Advisories and community discussion only.

What this page doesn’t show

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This page is what’s public. Mallory adds the parts that aren’t: which of your assets are affected, which adversaries are exploiting it right now, which detections to deploy, and what to do tonight.

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Exposure mapping

Query your assets running an affected version, and investigate the blast radius.

Threat actor evidence

Every observed campaign linking this CVE to a named adversary.

Associated malware

Malware families riding this exploit, with evidence and IOCs.

Detection signatures

YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.

Vendor-by-vendor mapping

Cross-references every affected SKU, including bundled OEM variants.

Social activity3