Vulnerability in Macro-Expert Macro Expert
CVE-2021-47780
Macro Expert 4.7 contains an unquoted service path vulnerability that allows local users to potentially execute arbitrary code with elevated system privileges. Attackers can exploit the improperly configured service path to inject malicious executables that will be run with LocalSystem permissions during service startup.
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: 0.003 (14.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 15th percentile — 14.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.003 · change: +0.000
Affected products
- Macro-Expert Macro Expert — versions 4.7
- Macro-Expert Macro Expert — versions 4.7
Weakness classification (CWE)
References
- www.exploit-db.com/exploits/50431 (Exploit, Third Party Advisory, exploit)
- www.macro-expert.com/ (Product, product)
- www.vulncheck.com/advisories/macro-expert-unquoted-service-path (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2021-47780?
- CVE-2021-47780 is a high-severity vulnerability in Macro-Expert Macro Expert, classified under Unquoted Search Path or Element. CVSS score: 7.8/10. Published 2026-01-16.
- How severe is CVE-2021-47780?
- High severity. CVSS v3 base score is 7.8 out of 10.