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Exploited vulnerability · CISA KEV

Is CVE-2012-1854 exploited? Yes: in CISA KEV since 13 Apr 2026

Gociux · Microsoft Visual Basic for Applications (VBA) · data: CISA KEV, CVE record, FIRST EPSS

Yes. CVE-2012-1854, Microsoft Visual Basic for Applications Insecure Library Loading Vulnerability, is being exploited in the wild. CISA added it to its Known Exploited Vulnerabilities catalog on 13 Apr 2026, 5025 days after it was published. It affects Microsoft Visual Basic for Applications (VBA). If you run it, CISA's required action is: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

exploitedYesCISA KEV · 13 Apr 2026
ransomwareNot knownno confirmed use
EPSStop 5%very likely to be exploited
severity7.8CVSS 3.1 · high
US federal due27 Apr 2026BOD 22-01 deadline

What it is

Microsoft Visual Basic for Applications (VBA) contains an insecure library loading vulnerability that could allow for remote code execution.

VendorMicrosoft (391 exploited CVEs in KEV)
ProductVisual Basic for Applications (VBA)
VulnerabilityMicrosoft Visual Basic for Applications Insecure Library Loading Vulnerability
WeaknessCWE-426
Published10 Jul 2012
Added to KEV13 Apr 2026
Reported by (CNA)microsoft

What to do

  1. Check whether you run it. Look for Visual Basic for Applications (VBA) 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, follow applicable BOD 22-01 guidance for cloud services, 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 10 Jul 2012.
  4. Get told next time. Email alerts when CISA adds a CVE for Microsoft.

References

Questions

Is CVE-2012-1854 being exploited?

Yes. CISA added CVE-2012-1854 to the Known Exploited Vulnerabilities catalog on 13 Apr 2026, which means there is reliable evidence of exploitation in the wild.

Is CVE-2012-1854 used in ransomware attacks?

CISA does not list known ransomware use for it. That can change, and exploitation alone is reason to fix it first.

How do I fix CVE-2012-1854?

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. Check Microsoft's advisory for the fixed versions, and if you can't patch quickly, restrict access to the affected Visual Basic for Applications (VBA) and watch it for signs of compromise.

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 April 2026 · Microsoft scorecard · act-now radar.

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