CVE-2025-62864 json
Ampere AmpereOne AC03 devices before 3.5.9.3, AmpereOne AC04 devices before 4.4.5.2, and AmpereOne M devices before 5.4.5.1 allow an incorr…
published 2025-12-16 10 mo ago modified 2026-10-13 26 d ago also EUVD-2025-203817
- cvss
- 9.8
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 30%
- public exploits
- 0
- none known
Summary
Ampere AmpereOne AC03 devices before 3.5.9.3, AmpereOne AC04 devices before 4.4.5.2, and AmpereOne M devices before 5.4.5.1 allow an incorrectly formed SMC call to UEFI-MM MMCommunicate service that could result in an out-of-bounds write within the UEFI-MM Secure Partition context.
Patch / fix
- amperecomputing ampereone_a192-32m_firmware 5.4.5.1
- amperecomputing ampereone_a192-26m_firmware 5.4.5.1
- amperecomputing ampereone_a160-28m_firmware 5.4.5.1
- amperecomputing ampereone_a144-33m_firmware 5.4.5.1
- amperecomputing ampereone_a144-26m_firmware 5.4.5.1
- amperecomputing ampereone_a96-36m_firmware 5.4.5.1
- amperecomputing ampereone_a96-36x_firmware 4.4.5.2
- amperecomputing ampereone_a128-34x_firmware 4.4.5.2
- amperecomputing ampereone_a144-24x_firmware 4.4.5.2
- amperecomputing ampereone_a144-27x_firmware 4.4.5.2
- amperecomputing ampereone_a160-28x_firmware 4.4.5.2
- amperecomputing ampereone_a192-26x_firmware 3.5.9.3, 4.4.5.2
- amperecomputing ampereone_a192-32x_firmware 3.5.9.3
CISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- total
- Assessed
- 10 mo ago
Exploit prediction
0.36% chance of exploitation in the next 30 days, higher than 30% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CISA ADP | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| CNA | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
Classification
- Weakness
-
- CWE-787 Out-of-bounds Write
References
-
amperecomputing.com
/products/product-security
vendor-advisory
-
amperecomputing.com
/products/security-bulletins/amp-sb-0007
vendor-advisory
Sources
- CVE List CVE-2025-62864
- NVD CVE-2025-62864
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.