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May 11, 2022
CVE-2022-26923 - Active Directory Domain Services Elevation of Privilege Vulnerability
THE THREAT Microsoft has disclosed a new vulnerability impacting Active Directory Certificate Services (ADCS) tracked as CVE-2022-26923 (Active Directory Domain Services Elevation of Privilege Vulnerability). If exploited successfully, an authenticated attacker can escalate privileges in environments where ADCS is running on the domain. eSentire is aware of technical details and tooling [2] for…
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Cybersecurity Leader eSentire Continues Its Commitment to Rigorous Security Standards Earning PCI DSS Certification
Waterloo, ON, May 17, 2022 — eSentire, the Authority in Managed Detection and Response (MDR), maintains one of the most secure and robust IT environments of any MDR provider in the industry. To that end, eSentire today announced that it has received the Payment Card Industry Data Security Standard (PCI DSS) certification, considered one of the most stringent and comprehensive payment card…
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Security advisories — Mar 09, 2021

Browser Zero-Day Vulnerability

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THE THREAT

In the March Microsoft Patch Tuesday release, Microsoft disclosed an actively exploited zero-day vulnerability impacting the Edge (EdgeHTML-based) and Internet Explorer (versions 9 & 11) web-browsers. The vulnerability is tracked as CVE-2021-26411 and received a criticality score of 8.8/10. If exploited, the vulnerability allows for Remote Code Execution (RCE).

Organizations are strongly recommended to apply the security patches provided by Microsoft, as attacks have been identified in the wild.

What we’re doing about it

What you should do about it

Additional information

Details of real-world attacks involving CVE-2021-26411 have not been shared. It is currently unclear how widespread exploitation is of the vulnerability.

In an attack scenario, a threat actor could either host their own malicious page or compromise another website. Users visiting the malicious page from a vulnerable browser will result in the compromise. The only required user interaction is viewing the malicious page, making this an ideal vulnerability for drive-by exploit attacks.

Vulnerable Products:

References:

[1] https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-26411

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