Vulnerability · 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.
Published Jan 15, 2026 · catalog updated Mar 5, 2026 · Macro-Expert Macro Expert
Last checked Nov 5, 2026. A connected source was read within the last 7 days.
Check if you run it
No confirmed exploitation is on record for CVE-2021-47780. EPSS is 0.25%. Act only if a listed version of Macro-Expert Macro Expert is installed.
Gaps on this record
- No vendor fix or required action is stored. Compare the linked advisory before you change production.
- Severity
- High8.5
- Known exploitation
- Not in CISA/VulnCheck KEV
- EPSS
- 0.25%
- Remediation
- Vendor / distro source
- Affected products
- vendor Macro-Expert Macro Expert 4.7
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.
Are you affected?
Enter the version you run. The result uses only the ranges stored on this record.
The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.
- vendor Macro-Expert Macro Expert 4.74.7
How to fix CVE-2021-47780
No stored fix
No vendor fix text is stored. Use the linked advisory before you change production.
Version check
Seen in 4.7
Advisory
Open the cve_org record and follow its fix.
Official advisories
What to do
Three questions, each answered from this record only. Confirm the vendor advisory before you patch.
Should you patch?
No confirmed exploitation is on record for CVE-2021-47780. EPSS is 0.25%. Act only if a listed version of Macro-Expert Macro Expert is installed.
Which versions are affected?
Compare what you have installed with Macro-Expert Macro Expert 4.7 4.7. Compare the installed version with the linked vendor advisory before you change production.
What should an analyst verify?
No weakness class is stored. EPSS 0.25%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.
Code
The project this record applies to. Exploit listings stay in References.
No public source repository is identified for this product.
Timeline
Detection, updates, and resolution for this record.
Jan 15, 2026 · EUVD
Detected
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.
Mar 5, 2026 · EUVD
Updated
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.
Sources
- CVE.orgVulnerability recordCVE-2021-47780
Official CVE identifier
cve.org - FIRST EPSSExploitation probabilityCVE-2021-47780
30-day exploitation probability 0.25%
first.org - EUVDVulnerability recordEUVD-2026-3037
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 Local
euvd.enisa.europa.eu
References
Freshness
Last verified in this catalog Nov 5, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.
- FIRST EPSSNov 5, 2026
- EUVDNov 2, 2026
- CVE.orgOct 30, 2026