Microsoft Windows Ancillary Function Driver for WinSock Use-After-Free Vulnerability

Silence

same day

First public report to first vendor statementUnverified source

Exposure

same day

First public report to first fix

Follow-through

same day

First public report to a fix for every supported version

• Vendor silent
• Vendor statement, no fix
• Fixed for some versions
• Fixed when disclosed
• Date only, no time of day

1. First public report

   13 May 2025, 16:58 UTC

   CVE.org record CVE-2025-32709ClaimedQuote verifiedEvidence

   Null pointer dereference in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.

   CVE record published.

   Source

   CVE.org record CVE-2025-32709 cve record

   Recorded time

   13 May 2025, 16:58 UTC

   Precision

   To the minute

   Origin

   Claimed. The date the source gives.

   Quote check

   Found in the archived copy

   Snapshot

   sha256:f998e250252829fc…

   Used in metrics

   Yes

   Dispute this timestamp

   3 more sources for this moment

   Microsoft advisory CVE-2025-32709ClaimedQuote not found in archive13 May 2025Evidence

   Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability. Null pointer dereference in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate

   The vendor's own disclosure.

   Source

   Microsoft advisory CVE-2025-32709 vendor advisory

   Recorded time

   13 May 2025

   Precision

   Date only (no time of day is shown)

   Origin

   Claimed. The date the source gives.

   Quote check

   Not found in the archived copy. Treat with caution.

   Snapshot

   sha256:008a09e0f9d632dc…

   Used in metrics

   No, kept for the record

   Dispute this timestamp

   CISA KEV (CVE-2025-32709)ClaimedQuote verified13 May 2025Evidence

   Microsoft Windows Ancillary Function Driver for WinSock Use-After-Free Vulnerability

   Added to CISA's KEV catalog on 2025-05-13.

   Source

   CISA KEV (CVE-2025-32709) kev

   Recorded time

   13 May 2025

   Precision

   Date only (no time of day is shown)

   Origin

   Claimed. The date the source gives.

   Quote check

   Found in the archived copy

   Snapshot

   sha256:ef8fffede5c47200…

   Used in metrics

   No, kept for the record

   Dispute this timestamp

   Bluesky postClaimedQuote not checked yet13 May 2025, 17:38 UTCEvidence

   You can now share your thoughts on vulnerability CVE-2025-32709 in Vulnerability-Lookup:

   Earliest third-party post we hold.

   Source

   Bluesky post social

   Recorded time

   13 May 2025, 17:38 UTC

   Precision

   To the minute

   Origin

   Claimed. The date the source gives.

   Quote check

   Not checked yet

   Snapshot

   No archived snapshot

   Used in metrics

   No, kept for the record

   Dispute this timestamp

2. Vendor statement

   13 May 2025date onlysame dayUnverified: quote not found in the archived copy

   Microsoft advisory CVE-2025-32709ClaimedQuote not found in archiveEvidence

   Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability. Null pointer dereference in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate

   Source

   Microsoft advisory CVE-2025-32709 vendor advisory

   Recorded time

   13 May 2025

   Precision

   Date only (no time of day is shown)

   Origin

   Claimed. The date the source gives.

   Quote check

   Not found in the archived copy. Treat with caution.

   Snapshot

   sha256:008a09e0f9d632dc…

   Used in metrics

   Yes

   Dispute this timestamp

3. First workaround

   No official mitigation found yet.

4. First fix

   13 May 2025date onlysame day

   Microsoft advisory CVE-2025-32709ClaimedQuote verifiedEvidence

   Information published.

   Vendor Fix listed at the first revision

   Source

   Microsoft advisory CVE-2025-32709 vendor advisory

   Recorded time

   13 May 2025

   Precision

   Date only (no time of day is shown)

   Origin

   Claimed. The date the source gives.

   Quote check

   Found in the archived copy

   Snapshot

   sha256:615c4cd414acf2d0…

   Used in metrics

   Yes

   Dispute this timestamp

5. Fixed for all versions

   13 May 2025date onlysame day

   Microsoft advisory CVE-2025-32709ClaimedQuote verifiedEvidence

   Information published.

   every Known Affected product has a Vendor Fix and no later revision announces more updates

   Source

   Microsoft advisory CVE-2025-32709 vendor advisory

   Recorded time

   13 May 2025

   Precision

   Date only (no time of day is shown)

   Origin

   Claimed. The date the source gives.

   Quote check

   Found in the archived copy

   Snapshot

   sha256:615c4cd414acf2d0…

   Used in metrics

   Yes

   Dispute this timestamp

No brief for this incident yet. We write one for every open incident and every critical bug exploited before a fix.