Known exploited vulnerability
CVE-2020-24557
The short answer
CVE-2020-24557 affects Trend Micro Trend Micro Apex One and is rated high (CVSS 7.8). CISA added it to the Known Exploited Vulnerabilities catalog on 2021-11-03: attackers are using it, so patch it first.
What it is
A vulnerability in Trend Micro Apex One and Worry-Free Business Security 10.0 SP1 on Microsoft Windows may allow an attacker to manipulate a particular product folder to disable the security temporarily, abuse a specific Windows function and attain privilege escalation. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. Please note that version 1909 (OS Build 18363.719) of Microsoft Windows 10 mitigates hard links, but previous versions are affected.
Severity
7.8 high
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Exploited (CISA KEV)
Yes, since Nov 3, 2021
Federal due date May 3, 2022
EPSS, next 30 days
2.7%
Higher than 86% of scored CVEs
How it can be exploited
- Attack vector
- Local
- Attack complexity
- Low
- Privileges required
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- High
- Availability impact
- High
What CISA says to do
Apply updates per vendor instructions.
Affected products
Trend Micro Apex One, Trend Micro Worry-Free Business Security. NVD's record lists the exact affected versions.
References
- success.trendmicro.com/solution/000263632 Vendor Advisory
- success.trendmicro.com/solution/000267260 Vendor Advisory
- www.zerodayinitiative.com/advisories/ZDI-20-1094/ Third Party AdvisoryVDB Entry
- success.trendmicro.com/solution/000263632 Vendor Advisory
- success.trendmicro.com/solution/000267260 Vendor Advisory
- www.zerodayinitiative.com/advisories/ZDI-20-1094/ Third Party AdvisoryVDB Entry
- www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-24557 US Government Resource
Questions
Is CVE-2020-24557 being exploited?
Yes. CISA added CVE-2020-24557 to its Known Exploited Vulnerabilities catalog on 2021-11-03, with a federal remediation due date of 2022-05-03.
How do I fix CVE-2020-24557?
CISA's required action: Apply updates per vendor instructions.
From NVD, CISA KEV, FIRST EPSS and OSV.dev, checked . Status on NVD: Analyzed. The description is NVD's text, quoted as published.
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