Exploited vulnerability · CISA KEV

Is CVE-2023-36761 exploited? Yes: in CISA KEV since 12 Sep 2023

Gociux · Microsoft Word · data: CISA KEV, CVE record, FIRST EPSS

Yes. CVE-2023-36761, Microsoft Word Information Disclosure Vulnerability, is being exploited in the wild. CISA added it to its Known Exploited Vulnerabilities catalog on 12 Sep 2023, the day it was published. It affects Microsoft Word. If you run it, CISA's required action is: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

What it is

Microsoft Word contains an unspecified vulnerability that allows for information disclosure.

What to do

1. Check whether you run it. Look for Word in your asset inventory, including appliances and cloud images. Stack check lists every exploited Microsoft CVE at once.
2. Apply the fix. Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
3. If you can't patch today, take the affected service off the internet or restrict who can reach it, and check its logs for signs of compromise since 12 Sep 2023.
4. Get told next time. Email alerts when CISA adds a CVE for Microsoft.

Other exploited CVEs in Word

• CVE-2006-2492: Microsoft Word Malformed Object Pointer Vulnerability (8 Jun 2022)
• CVE-2012-2539: Microsoft Word Remote Code Execution Vulnerability (28 Mar 2022)
• CVE-2014-1761: Microsoft Word Memory Corruption Vulnerability (15 Feb 2022)

References

• msrc.microsoft.com/update-guide/vulnerability/CVE-2023-36761
• nvd.nist.gov/vuln/detail/CVE-2023-36761

Sources: CISA KEV (exploitation, ransomware use, required action, due date), the CVE record (publication date, CVSS, CNA), NVD and FIRST EPSS (live score). More: all KEV additions in September 2023 · Microsoft scorecard · act-now radar.