Nexbox A95X Amlogic S905X UART Unauthenticated Console Access
Only Nexbox A95X devices with the Amlogic S905X platform on builds up to A7_S905X_v2_2 20160713 are affected, through an internal UART header on the PCB. No fixed build is listed in the checked facts.
Written by anthropic/claude-haiku-5.5 from the sources below. Verify against them.
- Exploited
- No known exploitation
- Fix
- No fix listed
- Who is exposed
- Specific setups only
Do first: Check whether your setup matches what the bug needs. Nexbox A95X device with Amlogic S905X platform, affecting A95X builds up to A7_S905X_v2_2 20160713 Physical access to the internal UART header on the PCB A USB-to-TTL adapter is needed to reach the serial console
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- Published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- A 0-100 score for how much a CVE matters across the industry: exploitation, exposure, how widely the software is used, severity and whether a fix exists.What do these mean? →
- 17/100 · provisional
- How many real-world setups can hit the bug, from the vendor's advisory and CISA data. It does not know your setup.What do these mean? →
- Specific setups only
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
Summary
The Nexbox A95X TV boxes, which use the Amlogic S905X platform, expose an unauthenticated console through an internal UART header on the circuit board. A person with physical access to the device can use this to gain a shell and escalate to full root control.
Read the original description
Nexbox A95X TV boxes built on the Amlogic S905X platform contain an unauthenticated console exposed via an internal UART header on the PCB that allows physical attackers to obtain an interactive shell as uid 2000 (system) without any credentials. Attackers with physical access and a USB-to-TTL adapter can leverage this shell to reach the pppoe_wrapper vendor daemon, which contains an OS command injection vulnerability executed as root, resulting in full root-level compromise of the device.
What to do
Check whether your setup matches what the bug needs.
Nexbox A95X device with Amlogic S905X platform, affecting A95X builds up to A7_S905X_v2_2 20160713 Physical access to the internal UART header on the PCB A USB-to-TTL adapter is needed to reach the serial consoleWorkaround: The checked facts list no workaround. The only step the facts point to is limiting physical access to the internal UART header on the PCB, since the described attack depends on that access.
Timeline
- CVE published
- First seen by cve.now
Affected versions
- Nexbox A95X
A7_S905X_v2_2 20160713
Evidence 2
- Exploit
- Link
Corrections
None so far.
Something wrong on this page? Report an error. Every fix is listed here.
Questions about CVE-2026-119740
What does this mean?
The bug gives someone with physical access to the internal UART serial console an interactive shell as uid 2000 (system). From there the pppoe_wrapper root daemon's command injection can be reached, which leads to full root-level compromise of the device.Source: vulncheck.com
What should I do about it?
The checked facts name no fixed build, so no upgrade target can be given.Source: vulncheck.com
Is it being exploited?
It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. No public exploit code is tracked.Source: cve.now feed data
What if there's no patch?
The checked facts list no workaround. The only step the facts point to is limiting physical access to the internal UART header on the PCB, since the described attack depends on that access.Source: vulncheck.com