In certain Arm CPUs, a CPP RCTX instruction executed on one Processing Element (PE) may inhibit TLB invalidation when a TLBI is issued to the PE, either by the same PE or another PE in the shareability domain. In this case, the PE may retain stale TLB entries which should have been invalidated by the TLBI.
This vulnerability carries a HIGH severity rating with a CVSS v3.1 score of 7.9, requiring local system access to exploit with relatively low complexity without requiring user interaction . The vulnerability impacts confidentiality (data exposure), integrity (unauthorized modifications), for affected systems. Impacting 22 products from arm, from arm, from arm and 19 others, organizations running these solutions should prioritize assessment and patching.
Reported in 2026, this vulnerability emerged during an era marked by increased sophistication in supply chain attacks, cloud infrastructure vulnerabilities, and software-as-a-service (SaaS) security challenges. Security practices during this period emphasized zero-trust architectures, container security, and API protection.
2026-01-14T11:15:50.027
2026-01-26T19:40:19.270
Analyzed
CVSSv3.1: 7.9 (HIGH)
| Type | Vendor | Product | Version/Range | Vulnerable? |
|---|---|---|---|---|
| Operating System | arm | c1-ultra_firmware | - | Yes |
| Hardware | arm | c1-ultra | - | No |
| Operating System | arm | c1-premium_firmware | - | Yes |
| Hardware | arm | c1-premium | - | No |
| Operating System | arm | cortex-a710_firmware | - | Yes |
| Hardware | arm | cortex-a710 | - | No |
| Operating System | arm | cortex-x2_firmware | - | Yes |
| Hardware | arm | cortex-x2 | - | No |
| Operating System | arm | cortex-x3_firmware | - | Yes |
| Hardware | arm | cortex-x3 | - | No |
| Operating System | arm | cortex-x4_firmware | - | Yes |
| Hardware | arm | cortex-x4 | - | No |
| Operating System | arm | cortex-x925_firmware | - | Yes |
| Hardware | arm | cortex-x925 | - | No |
| Operating System | arm | neoverse-v2_firmware | - | Yes |
| Hardware | arm | neoverse-v2 | - | No |
| Operating System | arm | neoverse-v3_firmware | - | Yes |
| Hardware | arm | neoverse-v3 | - | No |
| Operating System | arm | neoverse-v3ae_firmware | - | Yes |
| Hardware | arm | neoverse-v3ae | - | No |
| Operating System | arm | neoverse-n2_firmware | - | Yes |
| Hardware | arm | neoverse-n2 | - | No |
SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For arm's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.