Looking at the WMF issue, how did it get there?
Hi everyone, Stephen Toulouse here. Now that the monthly release has passed and people are deploying the updates I wanted to take a moment to discuss some things related to questions we've been receiving on the recent WMF issue.
Context & Ripple Effects
The WMF saga had been running for two weeks by the time Stephen Toulouse posted this Q&A. It opened with the DEP controversy over whether Windows' own protections flagged the flaw, then an unofficial hotfix circulated by a third-party blogger while customers waited on Microsoft, followed by an updated advisory on January 3.
By January 10 InfoWorld reported two new WMF bugs found, keeping pressure on, and grc.com was openly asking whether the Windows Metafile handling amounted to a backdoor. Toulouse's post is the response team's attempt to close the loop now that the January monthly release has shipped and customers are deploying the updates — a defensive-communications move aimed at the rumor layer as much as at remediation questions.
First-order effects
- Customers deploying the January monthly updates get official answers on the WMF issue directly from MSRC, reducing reliance on the unofficial hotfix and third-party workarounds that filled the gap earlier this month.
- Microsoft has to address the backdoor framing circulating via grc.com head-on, since the question is now public enough that silence would read as confirmation to some customers.
Second-order effects
- Third-party patch publishers like the hexblog hotfix author lose their role as stopgap providers once the official update lands — but only if Microsoft's explanation of how the flaw got there satisfies the audience they won.
- Security bloggers who drove coverage of the DEP controversy and the new bug reports become de facto validators or critics of MSRC's account, shaping whether the explanation holds.
Third-order effects
- If vendor blogs become the primary channel for incident-response narrative — alongside formal advisories — the speed and tone of a company's own engineers will increasingly determine trust during active exploitation windows, ahead of any press statement.
- Sustained scrutiny of why legacy formats like 16-bit metafiles remain renderable by modern Windows points toward pressure to audit and retire ancient code paths that expose the whole installed base to one parsing bug.
The trend: Security incident response is shifting from formal advisories alone to direct engineer-to-customer blogging, as vendors race the independent researchers and bloggers who now shape vulnerability narratives first.