High

Hard-coded Credentials in ABB FLXeon

IdentifiersCVE-2024-48842CWE-798· Use of Hard-coded Credentials

CVE-2024-48842 is a hard-coded credentials vulnerability in ABB FLXeon controllers. The provided content identifies this issue as affecting FLXeon devices through firmware version 9.3.5, including multiple FBXi, FBVi, FBTi, and CBXi product variants referenced in CISA advisory ICSA-25-310-03. Because credentials are hard-coded in the product, an attacker who knows or can recover those embedded credentials may be able to authenticate to the device using vendor-embedded or otherwise non-changeable account material, bypassing normal trust assumptions around unique device credentials. The advisory characterizes the issue as remotely exploitable with low attack complexity.

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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 of the hard-coded credentials issue could allow unauthorized access to affected ABB FLXeon devices. Given the advisory’s statement that successful exploitation of the listed FLXeon vulnerabilities could allow an attacker to take remote control of the product, this issue may enable compromise of device management or operational functions and facilitate broader device takeover depending on exposed services and privilege associated with the embedded credentials.

Mitigation

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

ABB recommends stopping and disconnecting FLXeon products that are directly exposed to the Internet, including exposure through NAT port forwarding. Restrict access to trusted networks, enforce physical and network controls, and use secure remote access methods such as properly configured and fully updated VPNs. Where immediate patching is not possible, minimize reachable management interfaces and monitor for unauthorized authentication attempts against FLXeon devices.

Remediation

Patch, then assume compromise.

Upgrade affected ABB FLXeon products to the latest firmware version recommended by ABB. The content states that affected versions are through 9.3.5, and ABB recommends upgrading all FLXeon products to the latest firmware. Asset owners should also review ABB’s product-specific guidance in the associated advisory to confirm fixed versions and any required post-upgrade credential or configuration changes.

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

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

2 SOURCESView more in app

No news coverage yet. Advisories and community discussion only.

What this page doesn’t show

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Exposure mapping

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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 activity1