CVE-2021-46760
CWE-119Published: May 9, 2023· Updated: Jun 17, 2026
Official Description
A malicious or compromised UApp or ABL can send
a malformed system call to the bootloader, which may result in an out-of-bounds
memory access that may potentially lead to an attacker leaking sensitive
information or achieving code execution.
Technical Analysis
CVE-2021-46760 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.
A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.
From a weakness classification perspective (CWE-119): Buffer overflow vulnerabilities can lead to arbitrary code execution or denial of service by corrupting adjacent memory.
CVSS v3.1 Vector Breakdown
Affected Vendors & Products
Exploit & PoC Resources
Official Patches & Advisories
All References (2)
Quick Facts
Related CVEs (CWE-119)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2021-46760 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts