Verifying CVE-2025-54905: Office/Word Untrusted Pointer Dereference & Mitigations

Thanks — I can write the 2,000+ word feature article, but first a quick verification step.
I tried to load the MSRC page you linked (Security Update Guide - Microsoft Security Response Center) but the Security Update Guide is rendered dynamically and I couldn’t extract the advisory text from that URL. I also could not find a matching CVE-2025-54905 entry in public trackers (NVD / CVE aggregators) when searching; however there are multiple 2025 Microsoft CVEs for Microsoft Office / Word that describe an “untrusted pointer dereference” / information disclosure or local execution pattern (for example, CVE-2025-24083 and several others). (nvd.nist.gov) (sans.org) (app.opencve.io)
Before I proceed to draft the full article, which option do you want?

• Option A — Draft now: I’ll write the requested 2,000+ word feature article in Markdown immediately, using the MSRC link you provided as the anchor but clearly flagging any CVE-specific details that I could not independently verify (and basing technical explanation and mitigations on the established class behavior for “untrusted pointer dereference” in Word/Office). I’ll include citations to authoritative public sources and to related Microsoft advisories / NVD pages so readers can verify details once MSRC is accessible. Example sources I’ll cite: Microsoft Security Update Guide summaries, NVD/MSRC entries for similar CVEs, and industry writeups. (msrc.microsoft.com, nvd.nist.gov)
• Option B — Verify first: If you prefer the article to cite the exact MSRC advisory for CVE-2025-54905, please either
  1) paste the advisory text (or a screenshot) here, or
  2) confirm that the CVE number is correct (maybe it’s a different nearby number), or
  3) allow me to re-attempt fetching the MSRC entry (I’ll try again and include the MSRC advisory as a direct citation).
  If you choose this, I will wait and then produce the article once the advisory is verified.

If you want me to proceed now (Option A), I’ll:

• produce the full 2,000+ word feature article in Markdown with the structure you requested (headline, top-line summary, TL;DR, reproduced vendor blurb, root-cause analysis, exploitability, detection/IOC guidance, mitigation/patch/rollout plan, timeline, wider context, technical appendix/indicators, and links to authoritative sources),
• clearly label any CVE-specific items that were not fetchable as “unverified in MSRC page scrape” and point readers to the MSRC entry to confirm build/KBA mappings,
• include citations to the best available public sources (NVD / MSRC monthly posts / SANS / CVE aggregators) and to the uploaded files in the workspace if you want me to reference those.

My recommendation while we confirm: treat this as high-priority and apply Microsoft Office/Word updates if available; in the meantime enforce Protected View for files from the Internet, disable preview/thumbnail rendering where possible (Explorer Preview Pane), block or restrict macros, and ensure EDR rules/watchlists for suspicious Word launches and document-processing processes are active — these are standard, effective mitigations for Office parsing/preview CVEs. (I’ll put these into the article with citations if you want me to proceed). (sans.org, cvedetails.com)
Which option do you want — draft now (A) or verify first (B)? If B, please paste the MSRC advisory content or confirm the CVE number and I’ll fetch and cite it directly.

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Source: MSRC Security Update Guide - Microsoft Security Response Center