CVE-2026-24282: 
vulnerability analysis and mitigation

CVE-2026-24282 is an out-of-bounds read vulnerability in the Windows Push Message Routing Service that allows a locally authenticated, low-privileged attacker to disclose sensitive information from system memory. It was disclosed and patched on March 10, 2026, as part of Microsoft's March 2026 Patch Tuesday security update cycle. Affected platforms include Windows 10 (versions 1607, 1809, 21H2, 22H2) and Windows 11 (versions 23H2, 24H2, 25H2, 26H1) across x86, x64, and ARM64 architectures. The vulnerability carries a CVSS v3.1 base score of 5.5 (Medium) (Microsoft MSRC).

The vulnerability is classified as CWE-125 (Out-of-bounds Read), mapped to CAPEC-540 (Overread Buffers). The flaw resides in the Push Message Routing Service, where insufficient bounds checking allows a low-privileged local attacker to read memory beyond the intended buffer boundaries, potentially exposing sensitive data held in process memory. Exploitation requires local access and low-level privileges but no user interaction, making it straightforward for an attacker already present on the system to leverage. No public proof-of-concept or detailed technical write-up has been published as of the time of this report (Microsoft MSRC).

Successful exploitation results in an information disclosure impact, specifically the exposure of sensitive data from system memory such as credentials, encryption keys, or other confidential runtime data. The vulnerability has no integrity or availability impact, and its scope is limited to the local system without privilege escalation or lateral movement capability on its own. However, disclosed credentials or keys could be leveraged in follow-on attacks to escalate privileges or move laterally within a network (Microsoft MSRC).

Microsoft released patches on March 10, 2026, addressing this vulnerability across all affected Windows versions. Organizations should apply the following minimum build versions: Windows 10 22H2 (10.0.19045.7058), Windows 10 21H2 (10.0.19044.7058), Windows 10 1809 (10.0.17763.8511), Windows 10 1607 (10.0.14393.8957), Windows 11 26H1 (10.0.28000.1719), Windows 11 25H2 (10.0.26200.7979), Windows 11 24H2 (10.0.26100.7979), and Windows 11 23H2 (10.0.22631.6783). As a compensating control, enforce the principle of least privilege to limit local account access and reduce the attack surface until patches can be applied (Microsoft MSRC).

The vulnerability was covered as part of broader March 2026 Patch Tuesday roundups by multiple security outlets including BleepingComputer, Rapid7, Zero Day Initiative, Sophos, and Cybersecurity News, though CVE-2026-24282 itself received minimal individual attention given its medium severity and local-only attack vector. Security researchers and vendors generally noted the March 2026 update cycle as notable primarily for two zero-day fixes, with this information disclosure vulnerability treated as a routine patch (Zero Day Initiative, Rapid7).