Answer in brief
CVE-2026-87886 records a High severity (CVSS 7.8) vulnerability in CISA ADP Vulnrichment. The current sources mark it as known exploited. The current feed maps Acronis/Acronis Backup extension for Plesk (generic), Acronis/Acronis Backup plugin for cPanel & WHM (generic), Acronis/Acronis Backup plugin for DirectAdmin (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 7.8. Known-exploitation status makes exposure review time-sensitive. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Acronis/Acronis Backup extension for Plesk (generic), Acronis/Acronis Backup plugin for cPanel & WHM (generic), Acronis/Acronis Backup plugin for DirectAdmin (generic). Check affected ranges and fixed versions before updating.
| Product | Affected versions | Fixed versions |
|---|---|---|
| cpe:2.3:a:acronis:acronis_backup:1.9.3:-:*:*:*:cpanel:*:* | Not reported | Not reported |
| cpe:2.3:a:acronis:acronis_backup:1.9.3:hotfix1:*:*:*:cpanel:*:* | Not reported | Not reported |
| cpe:2.3:a:acronis:acronis_backup:1.9.3:hotfix2:*:*:*:cpanel:*:* | Not reported | Not reported |
| cpe:2.3:a:acronis:acronis_backup:*:*:*:*:*:cpanel:*:* | Not reported | Not reported |
| cpe:2.3:a:acronis:acronis_backup:*:*:*:*:*:directadmin:*:* | Not reported | Not reported |
| cpe:2.3:a:acronis:acronis_backup:*:*:*:*:*:plesk:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| Acronis/Acronis Backup extension for Pleskgeneric | >=unspecified <1.8.11.638 | 1.8.11.638 |
| Acronis/Acronis Backup plugin for cPanel & WHMgeneric | >=unspecified <1.9.3.1021 | 1.9.3.1021 |
| Acronis/Acronis Backup plugin for DirectAdmingeneric | >=unspecified <1.2.3.238 | 1.2.3.238 |
Published upstream
Sep 17, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Sep 19, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Sep 16, 2026
Added to CISA KEV
Sep 16, 2026
Evidence: source:kev:kev:kev:recordLocal privilege escalation due to insecure file permissions. The following products are affected: Acronis Backup plugin for cPanel & WHM (Linux) before build 1.9.3.1021, Acronis Backup extension for Plesk (Linux) before build 1.8.11.638, Acronis Backup plugin for DirectAdmin (Linux) before build 1.2.3.238.
Quoted source text, attributed separately from HOL analysis.