CVE-2025-29989
Dell Precision 5820 Tower Firmware ≤ 2.42.0
Raw vector
CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:N/I:L/A:LSummary
CVE-2025-29989 is a low-severity Security Version Number Mutable to Older Versions (CWE-1328) vulnerability in Dell Precision 5820 Tower Firmware. Its CVSS base score is 3.1 (Low).
Operationally, exploitation aligns with the MITRE ATT&CK technique Downgrade Attack (T1689); ranked at the 3th 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 SC-51 (Hardware-based Protection) and SI-7 (Software, Firmware, and Information Integrity) — see the control section below for these in your framework.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2025-10503
Vulnerability Data
Dell Client Platform BIOS contains a Security Version Number Mutable to Older Versions vulnerability. A high privileged attacker with local access could potentially exploit this vulnerability, leading to BIOS upgrade denial.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise Techniques
CVEs Like This One
Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
Hardware-enforced write protection directly stops unauthorized mutation of a security version number to older values.
Firmware integrity verification can discover that a version rollback has occurred after the fact.
Enforcing access restrictions on configuration changes can block unauthorized writes to a mutable security version register.
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.
Pre-acquisition assessment of hardware authenticity/integrity directly prevents purchase of chips whose security version numbers can be rolled back.
Hardened baselines and configuration management can enforce immutable version checks or secure-boot policies that mitigate rollback.
Hardware lacking immutable version-number protection can be identified and replaced as part of risk-based hardware maintenance.
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.
Controlled software installation procedures can block unauthorized or older firmware versions from being loaded.
Secure SDLC practices can embed anti-rollback mechanisms during hardware/firmware design.
Secure architecture principles can mandate hardware-enforced version counters or fuses.
Change-management processes can require cryptographic verification of firmware versions before deployment.
Configuration management can enforce immutable or version-locked firmware images, limiting rollback risk.