CVE-2025-49163Public exploit

Arbitrary firmware boot via replaced gunzip

Published Jun 2, 2025 · Updated Jun 3, 2025

Secure boot bypass in ARRIS VIP1113 devices through 2025-05-30 allows local users to boot arbitrary images via a replaced gunzip binary. The second-stage bootloader validates the downloaded image, then invokes /usr/bin/gunzip from a writable filesystem, allowing a replacement binary to modify the image before kexec. Exploitation requires privileged boot-configuration access and a preceding executable-overwrite path; success grants root-level control through attacker-supplied firmware.

CVSS severity6.7
Medium
EPSS probability0.16%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Secure boot bypass in ARRIS VIP1113 devices through 2025-05-30 allows local users to boot arbitrary images via a replaced gunzip binary. The second-stage bootloader validates the downloaded image, then invokes /usr/bin/gunzip from a writable filesystem, allowing a replacement binary to modify the image before kexec. Exploitation requires privileged boot-configuration access and a preceding executable-overwrite path; success grants root-level control through attacker-supplied firmware.

The record

CVE
CVE-2025-49163
Published
Jun 2, 2025
Updated
Jun 3, 2025
Vendor
ARRIS
Product
ARRIS VIP1113
Classifications
CWE-424, T1542.001
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Jun 2, 2025CVE publishedPublication date reported by the CVE source.
  2. Jun 3, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=2025-05-30

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

ARRIS · ARRIS VIP1113version=0 <=2025-05-30

Published CVSS scores

6.7MITRECVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-424Improper Protection of Alternate Path
T1542.001Pre-OS Boot: System Firmware

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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