dbcve.org
Exynos 1080 FirmwareOperating system · Samsung

CVE-2024-56426

HIGH · 7.5 CVSS v3.1 Published 2025-11-04
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
84/100
Remediation priority · High
Remotely reachable No privileges Zero-click

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
An issue was discovered in Samsung Mobile Processor and Wearable Processor Exynos 980, 990, 850, 1080, 2100, 1280, 2200, 1330, 1380, 1480, 2400, W920, W930, W1000. The lack of a length check leads to out-of-bounds writes via malformed USB packets to the target.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · high confidence

Missing length validation in USB packet handling on Samsung Exynos processors (980, 990, 850, 1080, 2100, 1280, 2200, 1330, 1380, 1480, 2400, W920, W930, W1000) allows attackers to send malformed USB packets that trigger out-of-bounds memory writes, potentially leading to code execution or denial of service.

MitigationApply Samsung firmware updates for affected processors; implement USB input validation and network segmentation to reduce attack surface until patches are available.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
Exynos 1080 FirmwareOperating system
Affected:all versions
Exynos 1280 FirmwareOperating system
Affected:all versions
Exynos 1330 FirmwareOperating system
Affected:all versions
Exynos 1380 FirmwareOperating system
Affected:all versions
Exynos 1480 FirmwareOperating system
Affected:all versions
Exynos 2200 FirmwareOperating system
Affected:all versions
Exynos 2400 FirmwareOperating system
Affected:all versions
Exynos 850 FirmwareOperating system
Affected:all versions

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Identify the Exynos processor model
    On the device or system, check the processor/CPU information (via /proc/cpuinfo on Android/Linux, or system information menus). Alternatively, inspect the device's technical specifications or kernel boot logs for 'Exynos' processor identification.
    Affected if The processor model matches any of these: Exynos 980, 990, 850, 1080, 2100, 1280, 2200, 1330, 1380, 1480, 2400, W920, W930, or W1000
  2. Confirm firmware version
    Check the firmware/baseband version on the device (on Android: Settings > About Phone > Software Information > Build number or baseband version). Compare against Samsung's official firmware releases for your specific Exynos model.
    Affected if The device runs any firmware version on the affected Exynos chips listed (all versions are vulnerable)
  3. Verify USB interface is enabled
    Check if USB debugging, USB peripheral mode, or USB OTG is enabled on the device. On Android: Settings > Developer Options > USB Debugging, or Settings > Connected Devices > USB. Inspect /sys/class/android_usb/ or /sys/bus/usb/devices/ for active USB configurations on embedded systems.
    Affected if USB debugging, USB peripheral/host mode, or USB OTG is turned on, making the USB packet handler accessible
  4. Inspect USB driver configuration
    Review the kernel configuration or USB driver module settings for the Exynos USB host/ gadget driver. Look for config options like CONFIG_USB_GADGET, CONFIG_USB_EHCI_EXYNOS, or similar in /boot/config-* or via 'modinfo' on loaded USB modules.
    Affected if USB gadget or host driver for Exynos is loaded and active

A system is affected if it uses any of the listed Samsung Exynos processors (1080, 1280, 1330, 1380, 1480, 2200, 2400, 850) with USB functionality enabled, regardless of firmware version.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

From vendor data
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Apply Samsung firmware updates for affected processors; implement USB input validation and network segmentation to reduce attack surface until patches are available.

Fix this in Exynos 1080 Firmware Scoped from the published advisory
  • Consultation8.0 h
  • Implementation16.0 h
  • Testing12.0 h
  • Review / QA6.0 h
42.0 hours of engineering $7,360
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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2024-56426 in production — separate from our analysis above.

No notes yet

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
  • No weaponised exploit code, or anything meant to cause harm
  • No spam, self-promotion, credentials, or personal data