CVE-2025-8774 json
riscv-boom SonicBOOM L1 Data Cache timing discrepancy
published 2025-08-09 14 mo ago modified 2026-06-17 4 mo ago also EUVD-2025-24063
- cvss
- 2.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 7%
- public exploits
- 0
- none known
Summary
A vulnerability has been found in riscv-boom SonicBOOM up to 2.2.3 and classified as problematic. Affected by this vulnerability is an unknown functionality of the component L1 Data Cache Handler. The manipulation leads to observable timing discrepancy. Local access is required to approach this attack. The complexity of an attack is rather high. The exploitation appears to be difficult. The vendor was contacted early about this disclosure but did not respond in any way.
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- no
- Technical impact
- partial
- Assessed
- 14 mo ago
Exploit prediction
0.18% chance of exploitation in the next 30 days, higher than 7% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/fizz-is-on-the-way/vuls_cpu/tree/master/MSHRush referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 2.0 | CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P |
| CNA | 3.1 | 2.5 | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N/E:P/RL:X/RC:R |
| CNA | 3.0 | 2.5 | CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N/E:P/RL:X/RC:R |
| CNA | 2.0 | 1.0 | AV:L/AC:H/Au:S/C:P/I:N/A:N/E:POC/RL:ND/RC:UR |
| CNA | 4.0 | 1.1 | CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
| CNA | 3.1 | 2.5 | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N |
| NVD | 3.1 | 4.7 | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N |
| CNA | 2.0 | 1.0 | AV:L/AC:H/Au:S/C:P/I:N/A:N |
Affected products
- riscv-boom SonicBOOM
Classification
References
-
github.com
/fizz-is-on-the-way/vuls_cpu/tree/master/MSHRush
related, exploit, broken-link
-
vuldb.com
/?id.319297
vdb-entry, third-party-advisory
-
vuldb.com
/?ctiid.319297
signature, permissions-required, vdb-entry
-
vuldb.com
/?submit.625550
third-party-advisory, vdb-entry
Sources
- CVE List CVE-2025-8774
- NVD CVE-2025-8774
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