Microsoft Visual Basic for Applications Loads Libraries Insecurely, Enabling Remote Code Execution; CISA's April 27th KEV Deadline Has Passed

Last refreshed2026-09-27

Status: KEV | Advisory ID: CVE-2012-1854

Key Details

CVE	CVE-2012-1854
Vulnerability Name	Microsoft Visual Basic for Applications Insecure Library Loading Vulnerability
Affected products	Microsoft Visual Basic for Applications (VBA)
Exploitation status	Listed in CISA's Known Exploited Vulnerabilities (KEV) catalog, indicating confirmed active exploitation.
Classified as	CWE-426 (Untrusted Search Path)
KEV listing	Added to CISA's Known Exploited Vulnerabilities (KEV) catalog on 2026-04-13.
Exploitation prediction (EPSS)	21.03% probability of exploitation in the next 30 days (97% percentile) -- FIRST.org's EPSS model.
Federal remediation deadline	2026-04-27 (CISA KEV, Binding Operational Directive).

Affected Products, Subsystems & Sectors

Vendor	Product	Affected Versions	Patch Status
Microsoft	Visual Basic for Applications (VBA)

Vendor

Product

Affected Versions

Patch Status

Microsoft

Visual Basic for Applications (VBA)

Subsystems	General OT
Sectors	Multiple

What to Know

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

What to Do

Monitor Microsoft's web page for any future patch releases.

References

Source	Reference
NVD	https://nvd.nist.gov/vuln/detail/CVE-2012-1854
CVE	https://www.cve.org/CVERecord?id=CVE-2012-1854

Source

Reference

NVD

https://nvd.nist.gov/vuln/detail/CVE-2012-1854

CVE

https://www.cve.org/CVERecord?id=CVE-2012-1854

KEV Required Action

Field	Value
KEV Link	https://www.cisa.gov/known-exploited-vulnerabilities-catalog
Date Added to KEV	2026-04-13
Required Action Due Date	2026-04-27
Required Action	Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Field

Value

KEV Link

https://www.cisa.gov/known-exploited-vulnerabilities-catalog

Date Added to KEV

2026-04-13

Required Action Due Date

2026-04-27

Required Action

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.