Vulnerability in Microsoft Windows
CVE-2020-24557
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.027 (85.5th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 85th percentile — 85.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.027 · newest: 0.027 · change: 0.000
Affected products
- Microsoft Windows
- Trend Micro Apex One — versions 2009 (on premise), SaaS
- Trend Micro Worry-Free Business Security — versions 10.0 SP1
- Trendmicro Apex One — versions 2019
- Trendmicro Worry-Free Business Security — versions 10.0
CISA KEV (Known Exploited Vulnerabilities)
This CVE is on the CISA KEV catalog, added on . CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.
BOD 22-01 due date: .
Required action: Apply updates per vendor instructions.
Public proof-of-concept exploits
References
- success.trendmicro.com/solution/000263632 (Vendor Advisory)
- www.zerodayinitiative.com/advisories/ZDI-20-1094/ (VDB Entry, Third Party Advisory)
- success.trendmicro.com/solution/000267260 (Vendor Advisory)
- 134c704f-9b21-4f2e-91b3-4a467353bcc0 (US Government Resource)
Frequently asked questions
- What is CVE-2020-24557?
- CVE-2020-24557 is a high-severity vulnerability in Microsoft Windows. CVSS score: 7.8/10. Published 2020-09-01.
- How severe is CVE-2020-24557?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2020-24557 known to be exploited?
- Yes. CVE-2020-24557 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2021-11-03), indicating it is being actively exploited. 4 public proof-of-concept repositories are indexed.