Vulnerability in Risc-V Instruction Set Manual
CVE-2021-1104
The RISC-V Instruction Set Manual contains a documented ambiguity for the Machine Trap Vector Base Address (MTVEC) register that may lead to a vulnerability due to the initial state of the register not being defined, potentially leading to information disclosure, data tampering and denial of service.
EPSS: 0.017 (74.3th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Risc-v Instruction_set_manual
- Riscv.org Machine Trap Base Address (Mtvec) Register — versions All versions
Weakness classification (CWE)
References
- psirt@nvidia.com (x_refsource_CONFIRM, Exploit, Vendor Advisory)
Frequently asked questions
- What is CVE-2021-1104?
- CVE-2021-1104 is a critical-severity vulnerability in Risc-V Instruction Set Manual, classified under Use of Uninitialized Resource. CVSS score: 9.8/10. Published 2021-08-13.
- How severe is CVE-2021-1104?
- Critical severity. CVSS v3 base score is 9.8 out of 10.