Sony’s Firmware Fumble: XAV-AX5500 Vulnerability Opens Door for RCE Hijinks
Sony XAV-AX5500 devices are vulnerable to remote code execution due to flimsy firmware validation—think of it as leaving the backdoor open for USB-based attackers. This update relies on cryptography that could use a little less ‘crypto’ and a lot more ‘graphy.’ Proceed with caution, and maybe a laugh or two.

Hot Take:
Sony’s XAV-AX5500 firmware update vulnerability is like discovering your car’s infotainment system is as secure as a paper bag in a hurricane. Who knew that firmware updates could be the Trojan horse we never asked for? Buckle up, because this ride just got a lot more interesting!
Key Points:
- Sony XAV-AX5500’s firmware update mechanism is vulnerable to Remote Code Execution (RCE).
- The vulnerability is due to inadequate validation of firmware updates.
- Physical access is needed to exploit the vulnerability via USB.
- Symmetric cryptography and weak checksums are the culprits behind the vulnerability.
- The issue affects most Sony infotainment units before firmware version 2.00.
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