Legacy Serial Redirection SMRAM Vulnerabilities
Key facts
- Attack vector
- Local
- Privileges required
- High
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-200.
Summary
APTIOV contains vulnerabilities in the BIOS where a privileged user may cause “Write-what-where Condition” and “Exposure of Sensitive Information to an Unauthorized Actor” through local access. The successful exploitation of these vulnerabilities can lead to information disclosure, arbitrary data writing, and impact Confidentiality, Integrity, and Availability.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
- Fix · CNA AptioV (AMI) Fixed in AptioV_5.040
Timeline
- 2026-10-02 Threatist record created from CVE-2025-33045
- 2026-10-03 Alias added: GHSA-9m5j-r52w-m9v5
References
More AMI Aptio V vulnerabilities
- TI-2022-19108 The arbitrary write vulnerability in S3Resume2Pei leads to arbitrary code execution during PEI phase. CVSS 3.1HIGH 8.2
- TI-2022-19103 Stack overflow vulnerability in SMI handler on SmmSmbiosElog. CVSS 3.1HIGH 8.8
- TI-2022-19107 SMM memory corruption vulnerability in OverClockSmiHandler SMM driver CVSS 3.1HIGH 8.2
- TI-2022-10117 Stack-based buffer overflow in AMI Aptio CVSS 3.1HIGH 8.2
- TI-2024-28413 Runtime Service Access outside SMRAM CVSS 3.1HIGH 8.8
- TI-2023-20671 Failure when uploading a Logo image file CVSS 3.1HIGH 7.8
Sources
- CVE-2025-33045 · CVE Program
- CVE-2025-33045 · NVD
- FIRST EPSS
- GHSA-9m5j-r52w-m9v5 · GitHub Advisory Database · CC BY 4.0
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