CVE-2025-68623: CVE-2025-68623 is a high-severity privilege escalation
Source CVE Database V5
Not known to be exploited · CVSS 8.8 High.
Data as of 26 Oct 2026, 17:16 UTC
- EPSS
- 0.1% chance of exploitation in 30 days – higher than 2% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:HExploitation evidence
Disclosed: evidence found.
CVE published 11 Mar 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
AI-suggested
Organizations should restrict access to the %TEMP% directory to prevent unauthorized modification of files during installation. Running the installer in a controlled environment or with restricted permissions can reduce risk. Use application whitelisting and endpoint protection solutions to detect and block unauthorized executable modifications. Monitor installation processes for unexpected file changes in temporary directories. Until an official patch is released, consider deploying the installer only on trusted machines or under administrative supervision. Employ least privilege principles to limit user ability to run installers or modify temporary files. Additionally, consider using Windows Defender Application Control or similar technologies to enforce code integrity policies. Regularly audit systems for signs of privilege escalation attempts and educate users about the risks of running untrusted installers. Finally, maintain up-to-date backups to recover from potential compromises.
Description
CVE-2025-68623 is a high-severity privilege escalation vulnerability in the Microsoft DirectX End-User Runtime Web Installer version 9.29.1974.0. The installer runs with high integrity and downloads executables to a writable %TEMP% folder, allowing a low-privilege user to replace these executables with malicious ones. When the installer executes the replaced file, the attacker's code runs with elevated privileges, potentially escalating from a standard user to SYSTEM level. This occurs because the installer does not securely handle the downloaded files before execution. Although Microsoft disputes this as a vulnerability, the behavior enables a complete privilege escalation chain. No patches have been released yet, and no known exploits are in the wild. The CVSS score is 8.