Raw vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HSummary
CVE-2025-47394 is a high-severity Classic Buffer Overflow (CWE-120) vulnerability in Qualcomm Fastconnect 6200 Firmware. Its CVSS base score is 7.8 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploitation for Privilege Escalation (T1068); ranked at the 0.1th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.
The strongest mitigations our analysis identified map to SA-11 (Developer Testing and Evaluation) and SI-10 (Information Input Validation) — see the control section below for these in your framework.
Deeper analysis AI-assisted summary
Synthesised by an AI model from the NVD description and linked references — a reading aid, not an authoritative source.
CVE-2025-47394 is a memory corruption vulnerability stemming from incorrect offset calculations when copying overlapping buffers during memory operations. It affects Qualcomm products, as detailed in their security bulletin, and is classified under CWE-120 (Buffer Copy without Checking Size of Input). The vulnerability received a CVSS v3.1 base score of 7.8 (High), reflecting its local attack vector (AV:L), low attack complexity (AC:L), requirement for low privileges (PR:L), lack of user interaction (UI:N), unchanged scope (S:U), and high impacts on confidentiality, integrity, and availability (C:H/I:H/A:H). It was published on 2026-01-07.
A local attacker with low privileges can exploit this vulnerability with low complexity and no user interaction required. Successful exploitation enables high-impact outcomes, including potential arbitrary code execution, data tampering, or denial of service through memory corruption.
The Qualcomm January 2026 security bulletin at https://docs.qualcomm.com/product/publicresources/securitybulletin/january-2026-bulletin.html provides details on affected products and recommended mitigations, such as applying available patches.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2026-1260
Vulnerability Data
Memory corruption when copying overlapping buffers during memory operations due to incorrect offset calculations.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise Techniques
CVEs Like This One
Affected Assets
Mitigating Controls
Control response
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V5.2.1
Mitigating Controls (NIST 800-53 r5) AI
Developer testing and analysis can find missing size checks before deployment.
Input validation directly enforces size checks before buffer copies.
Engineering principles require bounds checking and safe buffer handling in design.
Memory protection limits the impact of an overflow once it occurs.
Mitigating Controls (NIST CSF 2.0) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.
Secure development practices directly enforce bounds checking and input validation that prevent classic buffer overflows.
Vulnerability identification processes such as code review or scanning detect classic buffer overflows before exploitation.
Routine patching replaces vulnerable code containing unchecked buffer copies with corrected versions.
Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.
Secure coding directly requires bounds-checked memory operations, addressing the root cause of CWE-120.
Security testing in development and acceptance can detect buffer overflows through fuzzing and static analysis, though it does not prevent them at the source.
Secure development life cycle mandates processes that can include input validation and bounds checking to prevent buffer overflows.
Application security requirements can specify input-size validation and safe buffer handling to mitigate classic buffer overflows.
Secure system architecture and engineering principles promote defensive coding patterns that reduce the likelihood of unchecked buffer copies.