- Published
- Source
- Help Net Security
- Filed under
- Microsoft, Malware & exploits
- Vulnerabilities
- 1 CVE Exploited
In another record-breaking Patch Tuesday, Microsoft has squashed over 1,400 security bugs, including a Mark of the Web bypass vulnerability (CVE-2026-96951) exploited by attackers in the wild. CVE-2026-96951 is a command injection vulnerability in Windows Shell that can be triggered by remote attackers via a file that is designed to exploit the vulnerability. Such a file can be sent to the user via email, instant message, or collaboration tools like Teams and Slack. Alternatively, users … More →…
If you run the affected product
- Find every instance – especially the ones reachable from the internet.
- Apply the vendor's patch or mitigation now: exploited flaws are fixed in days, not at the next patch cycle.
- Then check for signs it was used before you patched: web shells, new accounts, unusual outbound traffic.
More helpCISA's Known Exploited Vulnerabilities catalogue (opens in a new tab)
The vulnerabilities in this story
CVE-2026-96951 in the NVD (opens in a new tab)
- CVSS8.8High
- EPSS1.5%chance of exploitation in 30 days
- CISA KEVExploitedon the list since 13 Oct
Exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog (CC0). Exploit prediction: EPSS by FIRST. This product uses the NVD API but is not endorsed or certified by the NVD.
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