CVE-2025-24990
Microsoft Windows Server 2008 r2
Raw vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HSummary
CVE-2025-24990 is a high-severity Untrusted Pointer Dereference (CWE-822) vulnerability in Microsoft Windows Server 2008. Its CVSS base score is 7.8 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploitation for Privilege Escalation (T1068); ranked in the top 7% of CVEs by exploit likelihood; CISA has added it to the Known Exploited Vulnerabilities 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-2025-24990 affects the third-party Agere Modem driver, specifically ltmdm64.sys, which ships natively with supported Windows operating systems. This vulnerability, associated with CWE-822 (Untrusted Pointer Dereference), has a CVSS v3.1 base score of 7.8 (AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H). Microsoft has announced the removal of the driver due to these issues, with the driver already excised in the October cumulative update.
A local attacker with low privileges can exploit the vulnerability through low-complexity means requiring no user interaction. Exploitation enables high-impact consequences on confidentiality, integrity, and availability, facilitating elevation of privilege on affected Windows systems.
Microsoft advisories state that the ltmdm64.sys driver has been removed via the October cumulative update, rendering dependent fax modem hardware non-functional on Windows. The company recommends eliminating any existing dependencies on this hardware. Additional guidance includes detection and mitigation scripts from Vicarius, with the vulnerability documented on MSRC and listed in CISA's Known Exploited Vulnerabilities Catalog.
The presence in CISA's KEV catalog indicates active real-world exploitation.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2025-34257
Vulnerability Data
Microsoft is aware of vulnerabilities in the third party Agere Modem driver that ships natively with supported Windows operating systems. This is an announcement of the upcoming removal of ltmdm64.sys driver. The driver has been removed in the October cumulative…
more
update. Fax modem hardware dependent on this specific driver will no longer work on Windows. Microsoft recommends removing any existing dependencies on this hardware.
- CWE(s)
- KEV Date Added
- 14 October 2025
Related Threats
MITRE ATT&CK Enterprise Techniques
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Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
Developer testing and evaluation can discover instances where untrusted data is turned into a pointer and dereferenced.
Validating all information inputs stops untrusted values from being accepted and converted into dereferenceable pointers.
Memory-protection mechanisms limit the damage from an invalid pointer dereference without stopping the root coding flaw.
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 SDLC practices directly prevent introduction of untrusted pointer handling during development.
Runtime monitoring of software and data can detect adverse events resulting from exploitation of the weakness.
Vulnerability identification processes can discover instances of this weakness via code review or scanning.
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.
Security testing can detect pointer-dereference flaws before release.
Secure development lifecycle includes pointer-safety practices that reduce untrusted pointer dereference risk.
Application security requirements can mandate validation of pointers obtained from untrusted sources.
Secure architecture principles discourage direct use of untrusted values as pointers.
Secure coding standards explicitly forbid dereferencing pointers derived from untrusted input.