Windows Bluetooth Service CVEs 2025: Heap Overflow (27490) & UAF (53802) Explained

Short answer up front — I can write the 2,000+ word WindowsForum.com feature you asked for, but I need one quick clarification before I start: I can't find any public record for CVE‑2025‑59220. Public trackers and vendor records instead show multiple Windows “Bluetooth Service” elevation‑of‑privilege CVEs (for example CVE‑2025‑27490 — heap overflow, published Apr 8, 2025 — and CVE‑2025‑53802 — a use‑after‑free published Sep 9, 2025). (cvedetails.com)
Which would you like me to use as the canonical focus for the article?

• Option A — Write the 2,000+ word feature about CVE‑2025‑27490 (Heap‑based buffer overflow in Windows Bluetooth Service; high severity; April 2025 vendor advisory / NVD entries). (cvedetails.com)
• Option B — Write the 2,000+ word feature about CVE‑2025‑53802 (Use‑after‑free in Windows Bluetooth Service; appears in September 2025 advisories). (nvd.nist.gov)
• Option C — If you prefer, I can write one comprehensive feature that covers the Windows Bluetooth Service elevation‑of‑privilege class as a whole (covering the April and September 2025 items and the broader class of race/heap/UAF issues), with discrete sections for each CVE and the combined enterprise guidance. (This is likely the most useful to Windows administrators because Microsoft has issued multiple Bluetooth fixes across 2023–2025.)

Why I’m asking: you gave an MSRC URL and a CVE ID that I cannot locate. If you meant a different CVE number (for example one of the two above), I’ll base the article on Microsoft’s advisory and public trackers and include all of the sections you requested (plain‑English explanation, technical deep‑dive, exploitability assessment, affected versions and KB mappings, detection/IoCs, SIEM/EDR signatures, enterprise rollout guidance, and mitigation). If you intended CVE‑2025‑59220 specifically and have a source (MSRC advisory or internal advisory) with that ID, please attach or paste it and I’ll base the piece on that.
Quick verification notes and sources I used (so you can see why I’m asking):

• NVD / public aggregator pages show CVE‑2025‑27490 as a heap‑based buffer overflow in the Windows Bluetooth Service (published Apr 8, 2025; CVSS v3.1 ~7.8 in public trackers). (nvd.nist.gov)
• Public trackers and some feeds show CVE‑2025‑53802 as a Windows Bluetooth Service use‑after‑free (published Sep 9, 2025) and list Microsoft as the source in the vendor advisory. (nvd.nist.gov)
• Your uploaded WindowsForum content includes recent forum reporting and past feature drafts about Windows privilege escalation advisories (I can reuse the forum’s tone and structure if you want the article tailored to WindowsForum readers).

If you confirm which CVE (or that you want the composite article), I’ll produce the full 2,000+ word Markdown feature. Deliverables will include:

• Headline + deck suitable for WindowsForum.com
• Plain‑English summary (1–2 paragraphs)
• Incident timeline and vendor advisory summary (exact dates / KB numbers)
• Technical deep‑dive (root cause: heap overflow / UAF / race condition; simplified pseudo‑flow but no exploit code)
• Exploitability assessment (prereqs, required privileges, local vs remote, PoC availability, likelihood)
• Affected systems and exact affected build ranges and KB mappings (from MSRC / NVD / vendor pages)
• Detection & telemetry (reliable artifacts, event IDs, process names, suspicious API usage patterns)
• IoCs and sample indicators (file names, registry keys, service names, process hashes — where available from vendor advisories; I will not include exploit code)
• SIEM / EDR detection suggestions:
• Sigma rules (sample rule text you can drop into your pipeline)
• Sysmon event patterns and suggested filtering/signature examples
• Windows Event IDs to monitor and how to tune for false positives
• EDR hunting queries (example Elastic / Microsoft 365 Defender KQL style)
• Mitigation & recommended patches (KB numbers and rollout guidance for enterprise, with staggered deployment checklist and rollback guidance)
• Short checklist for admins and a suggested staged rollout plan (test, pilot, broad rollout, verification)
• Suggested post‑patch monitoring and incident response playbook (what to look for in logs / isolated hosts)
• Short “what to say to executives” blurb (risk/impact summary)
• References & attribution list (I will cite MSRC / NVD / cvedetails / other reputable sources)

One more question that affects tone and content:

• Do you want the article to include SIEM/EDR rule text in full (e.g., full Sigma rules and KQL queries)? I can provide them, but if publication policy requires review before including actionable detection content I’ll tone the samples to be high‑level; otherwise I’ll include ready‑to‑use Sigma + KQL examples.

Tell me:
1) Which option (A, B or C) do you want?
2) Do you want full rule text for Sigma / KQL / Sysmon in the article?
When you confirm, I’ll start writing the full Markdown article and will cite the vendor and public trackers as I go (I’ll use the MSRC advisory and the NVD / cvedetails / public trackers I found to validate build/KB mappings).

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Source: MSRC Security Update Guide - Microsoft Security Response Center