CVE-2026-21007 is a Samsung vulnerability in Device Care, tracked by Samsung as SVE-2025-2188, affecting Android 14, 15, and 16 prior to SMR Apr-2026 Release 1. The flaw is described as an improper check for exceptional conditions in Device Care. Due to insufficient handling of exceptional states, a physical attacker can cause Device Care to fail to enforce the intended protection logic, resulting in a bypass of Knox Guard. Samsung addressed the issue by adding proper check logic.
Mallory correlates every CVE against your assets, your vendors, and active adversary campaigns. Know which vulnerabilities matter for you, not just which ones are loud.
What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
If you can’t patch tonight, do this now.
Patch, then assume compromise.
1 valid exploit after Mallory filtered fakes, detection scripts, and README-only repos.
Small repository containing a single C proof-of-concept simulation plus README and license. The main file, gpu_driver_sim.c, models a GPU driver ioctl race condition: ioctl_map() allocates a buffer, sleeps briefly to create a race window, and then writes to the buffer with memset(); a concurrent attacker_thread() frees the shared buffer and nulls the pointer. The code demonstrates unsafe shared-state handling across threads and simulates a use-after-free condition that can crash the process. The README frames this as CVE-2026-21007 affecting a GPU kernel driver ioctl memory-mapping path and describes potential impact as kernel memory corruption and local privilege escalation, but the repository does not contain a real kernel exploit, ioctl interaction, shell payload, privilege-escalation primitive, or target-specific driver code. No network communication, URLs, IPs, domains, registry keys, or external command-and-control endpoints are present. The only notable external reference is the README compile/run instruction for the local binary. Overall, this is a local educational PoC/simulation of a race-condition/UAF bug pattern rather than an operational exploit against a real product.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
2 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.