SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityAnalyzed

CVE-2024-38226

Microsoft Publisher Protection Mechanism Failure Vulnerability

KEVHIGH 7.3EPSS 2.67%

Does this matter?

Known to be exploited in the wild (CISA KEV, CISA remediation deadline 1 October 2024). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.

Description

Microsoft Publisher Security Feature Bypass Vulnerability

CVSS 3.1
7.3 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
EPSS
2.67% probability · 85th percentile
CISA KEV
Listed 10 September 2024 · due 1 October 2024
Weakness
CWE-693
Affected
microsoft/office 2019 · microsoft/office long term servicing channel · microsoft/publisher
Source
secure@microsoft.com

CISA notes

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-38226; https://nvd.nist.gov/vuln/detail/CVE-2024-38226

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.