Advisory Details

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Microsoft Windows. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.

The specific flaw exists within the JET database engine. The issue results from the lack of proper validation of user-supplied data, which can result in a memory corruption condition. An attacker can leverage this vulnerability to execute code in the context of the current process.

This vulnerability is being disclosed publicly without a patch in accordance with the ZDI 120 day deadline.

11/13/20 – ZDI reported the vulnerability to the vendor
11/13/20 – The vendor acknowledged the report
03/31/21 – ZDI requested an update
03/31/21 – The vendor indicated they were working on a fix scheduled for April release
04/26/21 – ZDI requested an update and notified the vendor of the intention to publish the report as a 0-day advisory
05/03/21 – ZDI requested an update
05/07/21 – The vendor indicated they would not issue a fix
05/11/21 – ZDI notified the vendor of the intention to publish the case as a 0-day advisory on 05/18/21

-- Mitigation:
Given the nature of the vulnerability the only salient mitigation strategy is to restrict interaction with the application.

• 2020-11-13 - Vulnerability reported to vendor
• 2021-05-18 - Coordinated public release of advisory